| Water Temp Sender [message #260936] |
Thu, 04 September 2014 22:58  |
watles
Messages: 2
Registered: August 2004
Location: Orem, Utah
Karma: 0
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Junior Member |
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Had my engine rebuilt and they installed a RS6469 Water Temp Sender as suggested in the GMC MH Intl. Parts Exchange Index.
My Temp Gsuge just moves slightly above cold and just sits there. No variation with engine heat.
Had the Temp Gauge tested and it tested good.
Purchased and istalled another RS6469 from NAPA but no change.
Am I using the correct sender or is there another sender I should be using?
Engine is a 455 Jasper.
I hate to run without a working temp gauge.
Any suggestions?
Les Watson
Orem, Utah
77 Palm Beach
watles@gmail.com
Cell 801 360-0719
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| Re: Water Temp Sender [message #260948 is a reply to message #260936] |
Fri, 05 September 2014 01:10  |
Bullitthead
Messages: 1411
Registered: November 2013
Karma: 5
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Senior Member |
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Make sure the sender is installed in a place that will not retain an air pocket. It must have constant liquid contact to read the coolant temperature.
Terry Kelpien
ASE Master Technician
73 Glacier 260
Smithfield, Va.
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| Re: Water Temp Sender [message #260949 is a reply to message #260948] |
Fri, 05 September 2014 01:15 |
Bullitthead
Messages: 1411
Registered: November 2013
Karma: 5
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Senior Member |
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And make sure it is grounded. Check that by grounding the body of the sensor and watch for a difference in the gauge reading. Teflon tape has the possibility of insulating it from ground, especially if there is a lot of it wrapped on the threads.
Terry Kelpien
ASE Master Technician
73 Glacier 260
Smithfield, Va.
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| Re: [GMCnet] Water Temp Sender [message #260969 is a reply to message #260967] |
Fri, 05 September 2014 09:51 |
Otterwan
Messages: 946
Registered: July 2013
Location: Lynnwood (north of Seattl...
Karma: 0
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Senior Member |
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I removed the "Christmas Tree" (I forget the real name but the multi-port vacuum thing on the intake manifold) and installed an analog temperature gauge. So now instead of guessing what "1/3 of the way between H and C" means I actually know the engine temperature! Also, as was mentioned before, your thermostat might be stuck open (or absent). Another check might be does your fan ever engage?
1977 Birchaven, Lynnwood WA - "We may not be able to stop all evil in the world, but I know that how we treat one another is entirely up to us."
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| Re: Water Temp Sender [message #260976 is a reply to message #260936] |
Fri, 05 September 2014 11:56 |
watles
Messages: 2
Registered: August 2004
Location: Orem, Utah
Karma: 0
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Junior Member |
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Thanks for all the suggestions.
I removed the tape (first thing I thought of) - No change.
Air bubble a possibility...I check that.
I'll try the boiling water.
If no luck, I'll research putting in a different type gauge.
Thanks again....
Les Watson
Les & Sharon Watson
Orem, Utah
77 Palm Beach
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| Re: [GMCnet] Water Temp Sender [message #260998 is a reply to message #260969] |
Fri, 05 September 2014 14:52 |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Senior Member |
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David,
Here is the temp ranges for the stock sensor and the TS-6469.
http://gmcmotorhome.info/engine.html#sender
JR Wright
78 Buskirk Stretch
75 Avion
Michigan
On Sep 5, 2014, at 10:51 AM, David Orders wrote:
> I removed the "Christmas Tree" (I forget the real name but the multi-port vacuum thing on the intake manifold) and installed an analog temperature
> gauge. So now instead of guessing what "1/3 of the way between H and C" means I actually know the engine temperature! Also, as was mentioned before,
> your thermostat might be stuck open (or absent). Another check might be does your fan ever engage?
> --
> 1976 Royale "Twinkie II" Lynnwood WA - "We may not be able to stop all evil in the world, but I know that how we treat one another is entirely up to
> us."
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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| Re: Water Temp Sender [message #261037 is a reply to message #260936] |
Fri, 05 September 2014 22:31 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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Since this is an engine installation, Check for the proper grounds. I mean:
1. Is the engine battery negative connected directly to the engine block.
2. Is there a wire from the negative terminal of the engine battery to the aluminum plate that has the isolator mounted on it?
3. Is there a wire from the aluminum plate in item #2 to the aluminum dash piece that has the temperature gage mounted in it.
I'm guessing that they or you before the engine installation had a back circuit through the grounding strap on the back of the transmission and that circuit may not be connected or working any more.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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