Home » Public Forums » GMCnet » [GMCnet] EL II Height Sensor Failure
| [GMCnet] EL II Height Sensor Failure [message #211617] |
Wed, 19 June 2013 11:59  |
Ray Erspamer
Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin
Karma: -3
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Senior Member |
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Good Morning
I'm curious as to what would make BOTH of my Electro-Level II height sensors fail at the same time?
I replaced both of them in 2007 because the guts of the old ones had a total melt-down. They've worked perfect since then until our last trip out. This week I pulled both of them off and tested them with a 12vdc power source and 12vdc lights. If the coach is low they turn on the pumps and raise it to the proper level. If the coach is too high the pump does the 1 second cycle on which it's always done but then there's no current to turn on the LOWER solenoid. I can see one failing but both at the same time??
I found 2 on Ebay, should have them this week. I'll keep you posted.
Ray
Ray & Lisa
78 Royale "Great Lakes Eagle"
Center Kitchen TZE368V101144
Wauwatosa, Wisconsin 53226
Email: 78GMC-Royale@att.net
414-745-3188
Web Site: http://ray-lisa.page.tl/
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Ray Erspamer
78 GMC Royale Center Kitchen
403, 3.70 Final Drive
Holley Sniper Quadrajet EFI System,
Holley Hyperspark Ignition System
414-484-9431
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| Re: [GMCnet] EL II Height Sensor Failure [message #211619 is a reply to message #211617] |
Wed, 19 June 2013 12:12  |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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Ray, I have all that STUFF left over from my install of my new wireless
remote control system. One compressor motor is bad, (high amp draw) but
the rest of the EL II is removed intact. Wheel height sensors, turnbuckle
linkage adjusters, and the whole compressor/solenoid/relay assembly from my
78 Royale. Let me know if you need it all..
DON'T WANT TO PART IT OUT PIECEMEAL.
Jim Hupy
Salem, Or
78 Gmc Royale 403
On Jun 19, 2013 9:59 AM, "Ray Erspamer" <78gmc-royale@att.net> wrote:
> Good Morning
>
> I'm curious as to what would make BOTH of my Electro-Level II height
> sensors fail at the same time?
>
> I replaced both of them in 2007 because the guts of the old ones had a
> total melt-down. They've worked perfect since then until our last trip
> out. This week I pulled both of them off and tested them with a 12vdc
> power source and 12vdc lights. If the coach is low they turn on the pumps
> and raise it to the proper level. If the coach is too high the pump does
> the 1 second cycle on which it's always done but then there's no current to
> turn on the LOWER solenoid. I can see one failing but both at the same
> time??
>
> I found 2 on Ebay, should have them this week. I'll keep you posted.
>
>
>
> Ray
>
>
> Ray & Lisa
> 78 Royale "Great Lakes Eagle"
> Center Kitchen TZE368V101144
> Wauwatosa, Wisconsin 53226
> Email: 78GMC-Royale@att.net
> 414-745-3188
> Web Site: http://ray-lisa.page.tl/
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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| Re: [GMCnet] EL II Height Sensor Failure [message #211631 is a reply to message #211626] |
Wed, 19 June 2013 16:38 |
Ray Erspamer
Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin
Karma: -3
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Senior Member |
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Does the wireless system have the capability to automatically set the ride height ???
Â
Ray
Ray & Lisa
78 Royale "Great Lakes Eagle"
Center Kitchen TZE368V101144
Wauwatosa, Wisconsin 53226
Email: 78GMC-Royale@att.net
414-745-3188
Web Site: http://ray-lisa.page.tl/
________________________________
From: gene Fisher <mr.erfisher@gmail.com>
To: gmclist@temp.gmcnet.org
Sent: Wednesday, June 19, 2013 1:37 PM
Subject: Re: [GMCnet] EL II Height Sensor Failure
this will be easier and cheaper
http://gmcmotorhome.info/wireless.html
gene
On Wed, Jun 19, 2013 at 9:59 AM, Ray Erspamer <78gmc-royale@att.net> wrote:
> Good Morning
>
> I'm curious as to what would make BOTH of my Electro-Level II height
> sensors fail at the same time?
>
> I replaced both of them in 2007 because the guts of the old ones had a
> total melt-down. They've worked perfect since then until our last trip
> out. This week I pulled both of them off and tested them with a 12vdc
> power source and 12vdc lights. If the coach is low they turn on the pumps
> and raise it to the proper level. If the coach is too high the pump does
> the 1 second cycle on which it's always done but then there's no current to
> turn on the LOWER solenoid. I can see one failing but both at the same
> time??
>
> I found 2 on Ebay, should have them this week. I'll keep you posted.
>
>
>
> Ray
>
>
> Ray & Lisa
> 78 Royale "Great Lakes Eagle"
> Center Kitchen TZE368V101144
> Wauwatosa, Wisconsin 53226
> Email: 78GMC-Royale@att.net
> 414-745-3188
> Web Site: http://ray-lisa.page.tl/
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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Ray Erspamer
78 GMC Royale Center Kitchen
403, 3.70 Final Drive
Holley Sniper Quadrajet EFI System,
Holley Hyperspark Ignition System
414-484-9431
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| Re: [GMCnet] EL II Height Sensor Failure [message #211632 is a reply to message #211631] |
Wed, 19 June 2013 16:58 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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It is an active system. It constantly measures the air pressure that YOU
DETERMINE and keeps it within 3 psi of that figure. It is controlled by a
remote device similar to a garage door opener. Makes it really easy to
level at campsites.
Jim Hupy
Salem, Or
78 Gmc Royale 403
On Jun 19, 2013 2:38 PM, "Ray Erspamer" <78gmc-royale@att.net> wrote:
> Does the wireless system have the capability to automatically set the ride
> height ???
>
>
>
> Ray
>
>
> Ray & Lisa
> 78 Royale "Great Lakes Eagle"
> Center Kitchen TZE368V101144
> Wauwatosa, Wisconsin 53226
> Email: 78GMC-Royale@att.net
> 414-745-3188
> Web Site: http://ray-lisa.page.tl/
>
>
> ________________________________
> From: gene Fisher <mr.erfisher@gmail.com>
> To: gmclist@temp.gmcnet.org
> Sent: Wednesday, June 19, 2013 1:37 PM
> Subject: Re: [GMCnet] EL II Height Sensor Failure
>
>
> this will be easier and cheaper
> http://gmcmotorhome.info/wireless.html
> gene
>
>
>
>
>
> On Wed, Jun 19, 2013 at 9:59 AM, Ray Erspamer <78gmc-royale@att.net>
> wrote:
>
> > Good Morning
> >
> > I'm curious as to what would make BOTH of my Electro-Level II height
> > sensors fail at the same time?
> >
> > I replaced both of them in 2007 because the guts of the old ones had a
> > total melt-down. They've worked perfect since then until our last trip
> > out. This week I pulled both of them off and tested them with a 12vdc
> > power source and 12vdc lights. If the coach is low they turn on the
> pumps
> > and raise it to the proper level. If the coach is too high the pump does
> > the 1 second cycle on which it's always done but then there's no current
> to
> > turn on the LOWER solenoid. I can see one failing but both at the same
> > time??
> >
> > I found 2 on Ebay, should have them this week. I'll keep you posted.
> >
> >
> >
> > Ray
> >
> >
> > Ray & Lisa
> > 78 Royale "Great Lakes Eagle"
> > Center Kitchen TZE368V101144
> > Wauwatosa, Wisconsin 53226
> > Email: 78GMC-Royale@att.net
> > 414-745-3188
> > Web Site: http://ray-lisa.page.tl/
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> >
>
>
>
> --
> Gene Fisher -- 74-23,77PB/ore/ca
> “Give a man a fish; you have fed him for today --- give him a URL and
> -------
> http://gmcmotorhome.info/
> Alternator Protection Cable
> http://gmcmotorhome.info/APC.html
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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| Re: [GMCnet] EL II Height Sensor Failure [message #211634 is a reply to message #211631] |
Wed, 19 June 2013 17:48 |
jknezek
Messages: 1057
Registered: December 2007
Karma: 5
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Senior Member |
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| Ray Erspamer wrote on Wed, 19 June 2013 17:38 |
Does the wireless system have the capability to automatically set the ride height ???
Â
Ray
Ray & Lisa
78 Royale "Great Lakes Eagle"
Center Kitchen TZE368V101144
Wauwatosa, Wisconsin 53226
Email: 78GMC-Royale@att.net
414-745-3188
Web Site: http://ray-lisa.page.tl/
|
Provided you maintain basically the same weight and weight distribution profile across multiple trips, you have the ability to set the air pressure to a level that makes the height correct every time.
The wireless system will maintain that pressure automatically, but it will not "level" if that pressure does not make your coach level. It also will not correctly set the ride height unless that pressure provides the correct ride height.
For most of us, I'd imagine that the changes in weight based on packing variances are minimal enough that the wireless system will do a fine job. But unlike a functioning and properly set stock system, it does not guarantee that you are at the correct ride height.
There is a small trade off here, but I'd imagine it is one that most GMCers could live with...
Thanks,
Jeremy Knezek
1976 Glenbrook
Birmingham, AL
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| Re: [GMCnet] EL II Height Sensor Failure [message #211649 is a reply to message #211617] |
Wed, 19 June 2013 22:32 |
John Sharpe
Messages: 489
Registered: February 2006
Location: Texas
Karma: 1
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Senior Member |
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| Quote: |
...If the coach is too high the pump does the 1 second cycle on which it's always done but then there's no current to turn on the LOWER solenoid. I can see one failing but both at the same time??....
|
Ray, the sensors simply ground the control circuit for the direction detected. 12V + is not used to switch the compressor, bleed valve or the hold valve. If both sensors failed at the same time I would suspect an electrical event that burned them up. Have you checked the down sensor lead, to see if it provides a negative lead when activated?
John Sharpe
Humble,TX
'78 Eleganza TBI
'89 Spectrum 2000 MPI V-10
'40 Ford Panel Delivery TPI
johnasharpe@gmail.com
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| Re: [GMCnet] EL II Height Sensor Failure [message #211654 is a reply to message #211631] |
Thu, 20 June 2013 05:53 |
 |
mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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Senior Member |
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| Ray Erspamer wrote: |
> Good Morning
>
> I'm curious as to what would make BOTH of my Electro-Level II height sensors fail at the same time?
> ...
> ... I can see one failing but both at the same
> time??
[AND]
Does the wireless system have the capability to automatically set the ride height ???
|
I have had both sensors fail at the same time. Found them both full of water. I had to replace both sensors. (I used junkyard ones.) So... yes, they could go bad at the same time.
second question: That depends of what you mean by "automatically set the ride height."
If what you mean, is that it will find the correct ride height regardless of loading... no. (But do you really need this?)
If you mean "Will it auto-magically return to a "set height" after you have changed it for some reason?" ... YES, if you keep in mind that it is going for a set pressure and NOT a set height.
Anyway:
I always recommend: If your OEM system is "close to working," Fix it and use it. If someone has pulled most of it out, or trashed it... replace it with the wireless system.
But either way, a working system is VERY nice to have. Raise it in town, lower it for highway cruising and level it at the campsite without a bunch of blocks under the wheels.
I even use my system when changing a rear tire, to avoid jacking the coach with a jack!
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: [GMCnet] EL II Height Sensor Failure [message #211655 is a reply to message #211654] |
Thu, 20 June 2013 06:57 |
Jim Bounds
Messages: 842
Registered: January 2004
Karma: 0
|
Senior Member |
|
|
The ELII system was more of a "plug-n-play" than the previous Power & Electro-Level systems. Less trouble shooting and more just replace parts to make it work. The height sensors were easy to replace and test the system that way. Of course if both go out suspect grounds or power which are common to both. May not be the sensors, may be the compressor component, without parts to replace to check it's a difficult system to mess with. I look at it as how kids today troubleshoot new cars. Diagnose with your computer as much as possible then replace parts to see what happens. That's all good as long as there are parts on the shelf to sub, today there are no parts to do that for the ELII systems. This is why I take out the ELII systems I run into now and replace them with the new set up we have designed. Sort of an "Electro-Power Level" system, we use paddle air valves to manual operation then with solenoids kick in 2 original style early
height control valves with a single switch for automatic operation. Takes the fewest new parts to make the system and everything is off shelf so replacing parts is easy. I'm doing a writeup on the system on my daily pose so if you want to know more go there,
Jim Bounds
-----
________________________________
From: Mike Miller <m000035@gmail.com>
To: gmclist@temp.gmcnet.org
Sent: Thursday, June 20, 2013 6:54 AM
Subject: Re: [GMCnet] EL II Height Sensor Failure
Ray Erspamer wrote:
> > Good Morning
> >
> > I'm curious as to what would make BOTH of my Electro-Level II height sensors fail at the same time?
> > ...
> > ... I can see one failing but both at the same
> > time??
>
> [AND]
>
> Does the wireless system have the capability to automatically set the ride height ???
I have had both sensors fail at the same time. Found them both full of water. I had to replace both sensors. (I used junkyard ones.) So... yes, they could go bad at the same time.
second question: That depends of what you mean by "automatically set the ride height."
If what you mean, is that it will find the correct ride height regardless of loading... no. (But do you really need this?)
If you mean "Will it auto-magically return to a "set height" after you have changed it for some reason?" ... YES, if you keep in mind that it is going for a set pressure and NOT a set height.
Anyway:
I always recommend: If your OEM system is "close to working," Fix it and use it. If someone has pulled most of it out, or trashed it... replace it with the wireless system.
But either way, a working system is VERY nice to have. Raise it in town, lower it for highway cruising and level it at the campsite without a bunch of blocks under the wheels.
I even use my system when changing a rear tire, to avoid jacking the coach with a jack!
--
Mike Miller -- Hillsboro, OR -- on the Black list
(#1)'73 26' exPainted D. -- (#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
http://m000035.blogspot.com
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| Re: [GMCnet] EL II Height Sensor Failure [message #211657 is a reply to message #211655] |
Thu, 20 June 2013 07:17 |
John Sharpe
Messages: 489
Registered: February 2006
Location: Texas
Karma: 1
|
Senior Member |
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Jim K has both pre-owned and new height sensors for ElectroLevel II. Add a bleed valve and new compressor of your choice if you want to replace one of the original compressors. Or pick-up a used one at the Mens's Mall.
John Sharpe
Humble,TX
'78 Eleganza TBI
'89 Spectrum 2000 MPI V-10
'40 Ford Panel Delivery TPI
johnasharpe@gmail.com
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| Re: [GMCnet] EL II Height Sensor Failure [message #211658 is a reply to message #211657] |
Thu, 20 June 2013 07:24 |
Ray Erspamer
Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin
Karma: -3
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Senior Member |
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In 2007 I converted my entire system over to ViAir pumps and new solenoid valves. I changed some wiring, I may have had a conflict. I had run a large dedicated positive to the pumps but I also used it for the solenoids. I separated the large positive so it only powers the pumps and I'm using the OEM positive for the solenoids and relays.
I tested the old sensors just like the pictures you have on the web John, 12vdc to the sensor and lights hooked up on the ground sides. In the RAISE position the light turns on, in the LOWER position the pump (raise) light turns on for 1 second and then the LOWER light is supposed to go on, that doesn't happen. I have two sensors on order, I'm sure that will solve the problem.
Ray
Ray & Lisa
78 Royale "Great Lakes Eagle"
Center Kitchen TZE368V101144
Wauwatosa, Wisconsin 53226
Email: 78GMC-Royale@att.net
414-745-3188
Web Site: http://ray-lisa.page.tl/
________________________________
From: John Sharpe <johnasharpe@earthlink.net>
To: gmclist@temp.gmcnet.org
Sent: Thursday, June 20, 2013 7:17 AM
Subject: Re: [GMCnet] EL II Height Sensor Failure
Jim K has both pre-owned and new height sensors for ElectroLevel II. Add a bleed valve and new compressor of your choice if you want to replace one of the original compressors. Or pick-up a used one at the Mens's Mall.
--
John Sharpe
Humble,TX
'78 Eleganza TBI
'89 Spectrum 2000 MPI V-10
'40 Ford Deluxe TBI
mailto:johnasharpe@gmail.com
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_______________________________________________
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Ray Erspamer
78 GMC Royale Center Kitchen
403, 3.70 Final Drive
Holley Sniper Quadrajet EFI System,
Holley Hyperspark Ignition System
414-484-9431
|
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|
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| Re: [GMCnet] EL II Height Sensor Failure [message #211659 is a reply to message #211655] |
Thu, 20 June 2013 07:26 |
Ray Erspamer
Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin
Karma: -3
|
Senior Member |
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|
Thanks Jim, I appreciate the input, I'll look at your write up.
Ray
Ray & Lisa
78 Royale "Great Lakes Eagle"
Center Kitchen TZE368V101144
Wauwatosa, Wisconsin 53226
Email: 78GMC-Royale@att.net
414-745-3188
Web Site: http://ray-lisa.page.tl/
________________________________
From: Jim Bounds <gmccoop@yahoo.com>
To: "gmclist@temp.gmcnet.org" <gmclist@temp.gmcnet.org>
Sent: Thursday, June 20, 2013 6:57 AM
Subject: Re: [GMCnet] EL II Height Sensor Failure
The ELII system was more of a "plug-n-play" than the previous Power & Electro-Level systems. Less trouble shooting and more just replace parts to make it work. The height sensors were easy to replace and test the system that way. Of course if both go out suspect grounds or power which are common to both. May not be the sensors, may be the compressor component, without parts to replace to check it's a difficult system to mess with. I look at it as how kids today troubleshoot new cars. Diagnose with your computer as much as possible then replace parts to see what happens. That's all good as long as there are parts on the shelf to sub, today there are no parts to do that for the ELII systems. This is why I take out the ELII systems I run into now and replace them with the new set up we have designed. Sort of an "Electro-Power Level" system, we use paddle air valves to manual operation then with solenoids kick in 2 original style early
height control valves with a single switch for automatic operation. Takes the fewest new parts to make the system and everything is off shelf so replacing parts is easy. I'm doing a writeup on the system on my daily pose so if you want to know more go there,
Jim Bounds
-----
________________________________
From: Mike Miller <m000035@gmail.com>
To: gmclist@temp.gmcnet.org
Sent: Thursday, June 20, 2013 6:54 AM
Subject: Re: [GMCnet] EL II Height Sensor Failure
Ray Erspamer wrote:
> > Good Morning
> >
> > I'm curious as to what would make BOTH of my Electro-Level II height sensors fail at the same time?
> > ...
> > ... I can see one failing but both at the same
> > time??
>
> [AND]
>
> Does the wireless system have the capability to automatically set the ride height ???
I have had both sensors fail at the same time. Found them both full of water. I had to replace both sensors. (I used junkyard ones.) So... yes, they could go bad at the same time.
second question: That depends of what you mean by "automatically set the ride height."
If what you mean, is that it will find the correct ride height regardless of loading... no. (But do you really need this?)
If you mean "Will it auto-magically return to a "set height" after you have changed it for some reason?" ... YES, if you keep in mind that it is going for a set pressure and NOT a set height.
Anyway:
I always recommend: If your OEM system is "close to working," Fix it and use it. If someone has pulled most of it out, or trashed it... replace it with the wireless system.
But either way, a working system is VERY nice to have. Raise it in town, lower it for highway cruising and level it at the campsite without a bunch of blocks under the wheels.
I even use my system when changing a rear tire, to avoid jacking the coach with a jack!
--
Mike Miller -- Hillsboro, OR -- on the Black list
(#1)'73 26' exPainted D. -- (#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
http://m000035.blogspot.com
_______________________________________________
GMCnet mailing list
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http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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GMCnet mailing list
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_______________________________________________
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Ray Erspamer
78 GMC Royale Center Kitchen
403, 3.70 Final Drive
Holley Sniper Quadrajet EFI System,
Holley Hyperspark Ignition System
414-484-9431
|
|
|
|
| Re: [GMCnet] EL II Height Sensor Failure [message #211661 is a reply to message #211659] |
Thu, 20 June 2013 07:37 |
Jim Bounds
Messages: 842
Registered: January 2004
Karma: 0
|
Senior Member |
|
|
Brother I have walked that path. I cobbled up a replacementcompressor/solenoid set up but still, I was relying on those &^%$# original height sensors that also cannot be replaced. The system was sortof complicated then one day a height sensor failed or something happened and the system stopped.-- Now what! That's why I have been working the problemin my head for a while and finally came up with this. Hope it makes sense,
Jim Bounds
------------------------
________________________________
From: Ray Erspamer <78gmc-royale@att.net>
To: "gmclist@temp.gmcnet.org" <gmclist@temp.gmcnet.org>
Sent: Thursday, June 20, 2013 8:26 AM
Subject: Re: [GMCnet] EL II Height Sensor Failure
Thanks Jim, I appreciate the input, I'll look at your write up.
Ray
Ray & Lisa
78 Royale "Great Lakes Eagle"
Center Kitchen TZE368V101144
Wauwatosa, Wisconsin 53226
Email: 78GMC-Royale@att.net
414-745-3188
Web Site: http://ray-lisa.page.tl/
________________________________
From: Jim Bounds <gmccoop@yahoo.com>
To: "gmclist@temp.gmcnet.org" <gmclist@temp.gmcnet.org>
Sent: Thursday, June 20, 2013 6:57 AM
Subject: Re: [GMCnet] EL II Height Sensor Failure
The ELII system was more of a "plug-n-play" than the previous Power & Electro-Level systems. Less trouble shooting and more just replace parts to make it work. The height sensors were easy to replace and test the system that way. Of course if both go out suspect grounds or power which are common to both. May not be the sensors, may be the compressor component, without parts to replace to check it's a difficult system to mess with. I look at it as how kids today troubleshoot new cars. Diagnose with your computer as much as possible then replace parts to see what happens. That's all good as long as there are parts on the shelf to sub, today there are no parts to do that for the ELII systems. This is why I take out the ELII systems I run into now and replace them with the new set up we have designed. Sort of an "Electro-Power Level" system, we use paddle air valves to manual operation then with solenoids kick in 2 original style early
height control valves with a single switch for automatic operation. Takes the fewest new parts to make the system and everything is off shelf so replacing parts is easy. I'm doing a writeup on the system on my daily pose so if you want to know more go there,
Jim Bounds
-----
________________________________
From: Mike Miller <m000035@gmail.com>
To: gmclist@temp.gmcnet.org
Sent: Thursday, June 20, 2013 6:54 AM
Subject: Re: [GMCnet] EL II Height Sensor Failure
Ray Erspamer wrote:
> > Good Morning
> >
> > I'm curious as to what would make BOTH of my Electro-Level II height sensors fail at the same time?
> > ...
> > ... I can see one failing but both at the same
> > time??
>
> [AND]
>
> Does the wireless system have the capability to automatically set the ride height ???
I have had both sensors fail at the same time. Found them both full of water. I had to replace both sensors. (I used junkyard ones.) So... yes, they could go bad at the same time.
second question: That depends of what you mean by "automatically set the ride height."
If what you mean, is that it will find the correct ride height regardless of loading... no. (But do you really need this?)
If you mean "Will it auto-magically return to a "set height" after you have changed it for some reason?" ... YES, if you keep in mind that it is going for a set pressure and NOT a set height.
Anyway:
I always recommend: If your OEM system is "close to working," Fix it and use it. If someone has pulled most of it out, or trashed it... replace it with the wireless system.
But either way, a working system is VERY nice to have. Raise it in town, lower it for highway cruising and level it at the campsite without a bunch of blocks under the wheels.
I even use my system when changing a rear tire, to avoid jacking the coach with a jack!
--
Mike Miller -- Hillsboro, OR -- on the Black list
(#1)'73 26' exPainted D. -- (#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
http://m000035.blogspot.com/
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| Re: [GMCnet] EL II Height Sensor Failure [message #211662 is a reply to message #211661] |
Thu, 20 June 2013 07:49 |
Ray Erspamer
Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin
Karma: -3
|
Senior Member |
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Just read your info on the Daily Pose on your new air system, VERY NICE, I like it! So what do you use to "tell" the system to go to the correct ride height in the TRAVEL or AUTOMATIC mode ??? There has to be a height sensor of some type???
Ray
Ray & Lisa
78 Royale "Great Lakes Eagle"
Center Kitchen TZE368V101144
Wauwatosa, Wisconsin 53226
Email: 78GMC-Royale@att.net
414-745-3188
Web Site: http://ray-lisa.page.tl/
________________________________
From: Jim Bounds <gmccoop@yahoo.com>
To: "gmclist@temp.gmcnet.org" <gmclist@temp.gmcnet.org>
Sent: Thursday, June 20, 2013 7:37 AM
Subject: Re: [GMCnet] EL II Height Sensor Failure
Brother I have walked that path. I cobbled up a replacementcompressor/solenoid set up but still, I was relying on those &^%$# original height sensors that also cannot be replaced. The system was sortof complicated then one day a height sensor failed or something happened and the system stopped.-- Now what! That's why I have been working the problemin my head for a while and finally came up with this. Hope it makes sense,
Jim Bounds
------------------------
________________________________
From: Ray Erspamer <78gmc-royale@att.net>
To: "gmclist@temp.gmcnet.org" <gmclist@temp.gmcnet.org>
Sent: Thursday, June 20, 2013 8:26 AM
Subject: Re: [GMCnet] EL II Height Sensor Failure
Thanks Jim, I appreciate the input, I'll look at your write up.
Ray
Ray & Lisa
78 Royale "Great Lakes Eagle"
Center Kitchen TZE368V101144
Wauwatosa, Wisconsin 53226
Email: 78GMC-Royale@att.net
414-745-3188
Web Site: http://ray-lisa.page.tl/
________________________________
From: Jim Bounds <gmccoop@yahoo.com>
To: "gmclist@temp.gmcnet.org" <gmclist@temp.gmcnet.org>
Sent: Thursday, June 20, 2013 6:57 AM
Subject: Re: [GMCnet] EL II Height Sensor Failure
The ELII system was more of a "plug-n-play" than the previous Power & Electro-Level systems. Less trouble shooting and more just replace parts to make it work. The height sensors were easy to replace and test the system that way. Of course if both go out suspect grounds or power which are common to both. May not be the sensors, may be the compressor component, without parts to replace to check it's a difficult system to mess with. I look at it as how kids today troubleshoot new cars. Diagnose with your computer as much as possible then replace parts to see what happens. That's all good as long as there are parts on the shelf to sub, today there are no parts to do that for the ELII systems. This is why I take out the ELII systems I run into now and replace them with the new set up we have designed. Sort of an "Electro-Power Level" system, we use paddle air valves to manual operation then with solenoids kick in 2 original style early
height control valves with a single switch for automatic operation. Takes the fewest new parts to make the system and everything is off shelf so replacing parts is easy. I'm doing a writeup on the system on my daily pose so if you want to know more go there,
Jim Bounds
-----
________________________________
From: Mike Miller <m000035@gmail.com>
To: gmclist@temp.gmcnet.org
Sent: Thursday, June 20, 2013 6:54 AM
Subject: Re: [GMCnet] EL II Height Sensor Failure
Ray Erspamer wrote:
> > Good Morning
> >
> > I'm curious as to what would make BOTH of my Electro-Level II height sensors fail at the same time?
> > ...
> > ... I can see one failing but both at the same
> > time??
>
> [AND]
>
> Does the wireless system have the capability to automatically set the ride height ???
I have had both sensors fail at the same time. Found them both full of water. I had to replace both sensors. (I used junkyard ones.) So... yes, they could go bad at the same time.
second question: That depends of what you mean by "automatically set the ride height."
If what you mean, is that it will find the correct ride height regardless of loading... no. (But do you really need this?)
If you mean "Will it auto-magically return to a "set height" after you have changed it for some reason?" ... YES, if you keep in mind that it is going for a set pressure and NOT a set height.
Anyway:
I always recommend: If your OEM system is "close to working," Fix it and use it. If someone has pulled most of it out, or trashed it... replace it with the wireless system.
But either way, a working system is VERY nice to have. Raise it in town, lower it for highway cruising and level it at the campsite without a bunch of blocks under the wheels.
I even use my system when changing a rear tire, to avoid jacking the coach with a jack!
--
Mike Miller -- Hillsboro, OR -- on the Black list
(#1)'73 26' exPainted D. -- (#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
http://m000035.blogspot.com/
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Ray Erspamer
78 GMC Royale Center Kitchen
403, 3.70 Final Drive
Holley Sniper Quadrajet EFI System,
Holley Hyperspark Ignition System
414-484-9431
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| Re: [GMCnet] EL II Height Sensor Failure [message #211664 is a reply to message #211658] |
Thu, 20 June 2013 08:03 |
 |
USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Ray,
"I have two sensors on order, I'm sure that will solve the problem."
Good move!
After all the guys that designed the GMC suspension system more than likely guys that had degrees in automotive engineering and
specialized in suspension design.
They deemed an active ride height control system was required and that's good enough for me.
Come to think of it wasn't the first version and hydraulic / pneumatic system similar to Citroens?
Regards,
Rob M.
-----Original Message-----
From: Ray Erspamer
In 2007 I converted my entire system over to ViAir pumps and new solenoid valves. I changed some wiring, I may have had a
conflict. I had run a large dedicated positive to the pumps but I also used it for the solenoids. I separated the large positive
so it only powers the pumps and I'm using the OEM positive for the solenoids and relays.
I tested the old sensors just like the pictures you have on the web John, 12vdc to the sensor and lights hooked up on the ground
sides. In the RAISE position the light turns on, in the LOWER position the pump (raise) light turns on for 1 second and then the
LOWER light is supposed to go on, that doesn't happen. I have two sensors on order, I'm sure that will solve the problem.
Ray
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] EL II Height Sensor Failure [message #221129 is a reply to message #211632] |
Wed, 04 September 2013 12:11 |
John Sharpe
Messages: 489
Registered: February 2006
Location: Texas
Karma: 1
|
Senior Member |
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Ray, it's easier to fix the lowering problem, period. The sensor completes the ground circuit to the lowering solenoids. Perhaps you have lost constant + power to both of your lowering solenoids. If both sensors have failed, I would suspect that your hybrid system is requiring more current than they were designed to carry. So, I would recommend that you replace them and control your down solenoids by adding relays to avoid over current through the sensors.
John Sharpe
Humble,TX
'78 Eleganza TBI
'89 Spectrum 2000 MPI V-10
'40 Ford Panel Delivery TPI
johnasharpe@gmail.com
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