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Air Suspension Confusion [message #326854] Thu, 07 December 2017 14:42 Go to next message
Tom Lins is currently offline  Tom Lins   United States
Messages: 135
Registered: February 2004
Location: Elkton, FL
Karma: 0
Senior Member
I am trying to figure out what is going on with my air suspension.
We just got the coach home after purchasing it in MO.
On the way home the travel mode auto and hold function just the way my 78 used to.
If you leave it in Auto it will leak down over night.
If you leave it in hold it will stay at ride height overnight.
However the Raise and Lower to level the coach in a campground do not function at all.
I find this somewhat confusing since I would think the raise solenoid would be used to bring the coach up to ride height after leaking down overnight.

Anybody have any thought on where to look.


Tom Lins
Elkton, FL
77 GM Rear Twin
Re: [GMCnet] Air Suspension Confusion [message #326859 is a reply to message #326854] Thu, 07 December 2017 15:38 Go to previous messageGo to next message
Keith V is currently offline  Keith V   United States
Messages: 1935
Registered: March 2008
Location: Mounds View,MN
Karma: 4
Senior Member
78 so Electro level II?

Meaning 2 compressors?


If ELII does the pump come on in raise?


Actually either way Id look into the raise / lower switches

________________________________
From: Gmclist on behalf of Tom Lins
Sent: Thursday, December 7, 2017 2:42:59 PM
To: gmclist-AT-list-DOT-gmcnet-DOT-org
Subject: [GMCnet] Air Suspension Confusion

I am trying to figure out what is going on with my air suspension.
We just got the coach home after purchasing it in MO.
On the way home the travel mode auto and hold function just the way my 78 used to.
If you leave it in Auto it will leak down over night.
If you leave it in hold it will stay at ride height overnight.
However the Raise and Lower to level the coach in a campground do not function at all.
I find this somewhat confusing since I would think the raise solenoid would be used to bring the coach up to ride height after leaking down
overnight.

Anybody have any thought on where to look.
--
Tom Lins
Elkton, FL
77 GM Rear Twin


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Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
69 Vette
29 Dodge
Re: Air Suspension Confusion [message #326860 is a reply to message #326854] Thu, 07 December 2017 16:19 Go to previous messageGo to next message
rvanwin is currently offline  rvanwin   United States
Messages: 279
Registered: April 2007
Location: Battlefield, MO
Karma: 3
Senior Member

Tom Lins wrote on Thu, 07 December 2017 14:42
I am trying to figure out what is going on with my air suspension.
We just got the coach home after purchasing it in MO.
On the way home the travel mode auto and hold function just the way my 78 used to.
If you leave it in Auto it will leak down over night.
If you leave it in hold it will stay at ride height overnight.
However the Raise and Lower to level the coach in a campground do not function at all.
I find this somewhat confusing since I would think the raise solenoid would be used to bring the coach up to ride height after leaking down overnight.

Anybody have any thought on where to look.

First thing to look at is the switches themselves. Take them out and spray with contact cleaner. It does happen that one function stops working due to corrosion on the contacts. I had one where only one side would raise and the other would not. Cleaned the switch and both work as they should.


Randy & Margie
'77 Eleganza II '403'
Battlefield, MO
Re: Air Suspension Confusion [message #326861 is a reply to message #326854] Thu, 07 December 2017 16:26 Go to previous messageGo to next message
rvanwin is currently offline  rvanwin   United States
Messages: 279
Registered: April 2007
Location: Battlefield, MO
Karma: 3
Senior Member

Tom Lins wrote on Thu, 07 December 2017 14:42

We just got the coach home after purchasing it in MO.

Tom,

Glad you made it home. Sorry we were not home when you were here in Springfield so that we could have offered help. It was funny, you posted that you had additional fueling issues in Paducah, KY. We were in Paducah with Tom Whitton the day before you posted and headed home the next day via US 60. We did see a GMC headed east. Maybe that was you?


Randy & Margie
'77 Eleganza II '403'
Battlefield, MO
Re: [GMCnet] Air Suspension Confusion [message #326863 is a reply to message #326859] Thu, 07 December 2017 16:53 Go to previous messageGo to next message
Tom Lins is currently offline  Tom Lins   United States
Messages: 135
Registered: February 2004
Location: Elkton, FL
Karma: 0
Senior Member
Keith V wrote on Thu, 07 December 2017 16:38
78 so Electro level II?

Meaning 2 compressors?


If ELII does the pump come on in raise?


Actually either way Id look into the raise / lower switches

________________________________
From: Gmclist on behalf of Tom Lins
Sent: Thursday, December 7, 2017 2:42:59 PM
To: gmclist-AT-list-DOT-gmcnet-DOT-org
Subject: [GMCnet] Air Suspension Confusion

I am trying to figure out what is going on with my air suspension.
We just got the coach home after purchasing it in MO.
On the way home the travel mode auto and hold function just the way my 78 used to.
If you leave it in Auto it will leak down over night.
If you leave it in hold it will stay at ride height overnight.
However the Raise and Lower to level the coach in a campground do not function at all.
I find this somewhat confusing since I would think the raise solenoid would be used to bring the coach up to ride height after leaking down
overnight.

Anybody have any thought on where to look.
--
Tom Lins
Elkton, FL
77 GM Rear Twin


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OOPS My bad.

My 78 had EL1 and this one also has EL1


Tom Lins
Elkton, FL
77 GM Rear Twin
Re: Air Suspension Confusion [message #326865 is a reply to message #326861] Thu, 07 December 2017 17:17 Go to previous messageGo to next message
Tom Lins is currently offline  Tom Lins   United States
Messages: 135
Registered: February 2004
Location: Elkton, FL
Karma: 0
Senior Member
rvanwin wrote on Thu, 07 December 2017 17:26
Tom Lins wrote on Thu, 07 December 2017 14:42

We just got the coach home after purchasing it in MO.

Tom,

Glad you made it home. Sorry we were not home when you were here in Springfield so that we could have offered help. It was funny, you posted that you had additional fueling issues in Paducah, KY. We were in Paducah with Tom Whitton the day before you posted and headed home the next day via US 60. We did see a GMC headed east. Maybe that was you?




That was probably us. We were going east on US-60. Didn't want to have to go at Interstate speed.



Tom Lins
Elkton, FL
77 GM Rear Twin
Re: Air Suspension Confusion [message #326870 is a reply to message #326865] Thu, 07 December 2017 17:52 Go to previous messageGo to next message
rvanwin is currently offline  rvanwin   United States
Messages: 279
Registered: April 2007
Location: Battlefield, MO
Karma: 3
Senior Member

Tom Lins wrote on Thu, 07 December 2017 17:17
rvanwin wrote on Thu, 07 December 2017 17:26
Tom Lins wrote on Thu, 07 December 2017 14:42

We just got the coach home after purchasing it in MO.

Tom,

Glad you made it home. Sorry we were not home when you were here in Springfield so that we could have offered help. It was funny, you posted that you had additional fueling issues in Paducah, KY. We were in Paducah with Tom Whitton the day before you posted and headed home the next day via US 60. We did see a GMC headed east. Maybe that was you?




That was probably us. We were going east on US-60. Didn't want to have to go at Interstate speed.


Where around Springfield did you find your coach? I thought I knew about all the coaches in the area. Looked nice going down the road. Do you have any pictures?


Randy & Margie
'77 Eleganza II '403'
Battlefield, MO
Re: Air Suspension Confusion [message #326872 is a reply to message #326870] Thu, 07 December 2017 18:02 Go to previous messageGo to next message
Tom Lins is currently offline  Tom Lins   United States
Messages: 135
Registered: February 2004
Location: Elkton, FL
Karma: 0
Senior Member
rvanwin wrote on Thu, 07 December 2017 18:52
Tom Lins wrote on Thu, 07 December 2017 17:17
rvanwin wrote on Thu, 07 December 2017 17:26
Tom Lins wrote on Thu, 07 December 2017 14:42

We just got the coach home after purchasing it in MO.

Tom,

Glad you made it home. Sorry we were not home when you were here in Springfield so that we could have offered help. It was funny, you posted that you had additional fueling issues in Paducah, KY. We were in Paducah with Tom Whitton the day before you posted and headed home the next day via US 60. We did see a GMC headed east. Maybe that was you?




That was probably us. We were going east on US-60. Didn't want to have to go at Interstate speed.


Where around Springfield did you find your coach? I thought I knew about all the coaches in the area. Looked nice going down the road. Do you have any pictures?


We bought it from a couple in Pittsburg, MO

Pictures at
http://www.gmcmhphotos.com/photos/our-newest-gmc/p64031-second-picture-we-saw.html




Tom Lins
Elkton, FL
77 GM Rear Twin
Re: [GMCnet] Air Suspension Confusion [message #326878 is a reply to message #326859] Thu, 07 December 2017 22:05 Go to previous messageGo to next message
jimk is currently offline  jimk   United States
Messages: 4509
Registered: July 2006
Location: Belmont, CA
Karma: 5
Senior Member
More than likely the height control lever might not be functioning

Sent from my iPhone

> On Dec 7, 2017, at 1:38 PM, Keith V wrote:
>
> 78 so Electro level II?
>
> Meaning 2 compressors?
>
>
> If ELII does the pump come on in raise?
>
>
> Actually either way Id look into the raise / lower switches
>
> ________________________________
> From: Gmclist on behalf of Tom Lins
> Sent: Thursday, December 7, 2017 2:42:59 PM
> To: gmclist-AT-list-DOT-gmcnet-DOT-org
> Subject: [GMCnet] Air Suspension Confusion
>
> I am trying to figure out what is going on with my air suspension.
> We just got the coach home after purchasing it in MO.
> On the way home the travel mode auto and hold function just the way my 78 used to.
> If you leave it in Auto it will leak down over night.
> If you leave it in hold it will stay at ride height overnight.
> However the Raise and Lower to level the coach in a campground do not function at all.
> I find this somewhat confusing since I would think the raise solenoid would be used to bring the coach up to ride height after leaking down
> overnight.
>
> Anybody have any thought on where to look.
> --
> Tom Lins
> Elkton, FL
> 77 GM Rear Twin
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

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Jim Kanomata
Applied/GMC
jimk-AT-appliedairfilters-DOT-com
www.appliedgmc.com
1-800-752-7502
Re: Air Suspension Confusion [message #326911 is a reply to message #326854] Fri, 08 December 2017 13:13 Go to previous message
Tom Lins is currently offline  Tom Lins   United States
Messages: 135
Registered: February 2004
Location: Elkton, FL
Karma: 0
Senior Member
Tom Lins wrote on Thu, 07 December 2017 15:42
I am trying to figure out what is going on with my air suspension.
We just got the coach home after purchasing it in MO.
On the way home the travel mode auto and hold function just the way my 78 used to.
If you leave it in Auto it will leak down over night.
If you leave it in hold it will stay at ride height overnight.
However the Raise and Lower to level the coach in a campground do not function at all.
I find this somewhat confusing since I would think the raise solenoid would be used to bring the coach up to ride height after leaking down overnight.

Anybody have any thought on where to look.



I pulled the plugs off the back of the switches and put them back on after cleaning the spade connecters and all functions now work.
One thing off the checklist.


Tom Lins
Elkton, FL
77 GM Rear Twin
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