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Thread Tools | Display Modes |
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#1 |
Registered User
Join Date: May 2004
Location: Here
Posts: 167
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temp gauge not working????
I replaced the thermostat, temp sending unit and new engine harness all at the same time. Once I installed it, the temp gauge doesn't work. It moves a little when I start the truck up, but thats it? Any suggestions in fixing this?
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#2 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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what temp t-stat did you install?
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#3 |
Registered User
Join Date: May 2004
Location: Here
Posts: 167
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I don't really know...I ordered it from LMC truck like 6 months ago.
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#4 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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if it is a 160 degree or maybe even a 180, it'll hardly move the guage.
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#5 |
Senior Member
![]() ![]() Join Date: Jan 2005
Location: CA
Posts: 5,525
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A quick test you can do to see if the gauge and wiring are working is to turn you key in the "on" position, disconnect the green wire from the temperature sender, and short it against the housing of the temperature sender. The gauge needle should go way up to the H position. If it does, then chances are that your gauge and wiring are fine.
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#6 |
Registered User
Join Date: May 2004
Location: Here
Posts: 167
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I found my reciept and it is a 180. The gauge actually moves left when the ignition is started up. Before ignition, its starts out left of the gauge readings and then goes a tiny bit further. I am gonna try shorting it out now.
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#7 |
Registered User
Join Date: May 2004
Location: Here
Posts: 167
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I just tried the short thing and it went up to the H just like you said. Where do I go from there?
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#8 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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did you put thread tape on the temp sensor? You aren't supposed to, it may be hindering the ground.
With a 180, it should move up a little...less than 1/8 the way up the guage or so. |
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#9 |
Registered User
Join Date: Feb 2002
Location: Vacaville, CA
Posts: 2,746
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You might also have a sensor that is not made to work with your gauge i.e. wrong resistance range.
__________________
![]() ![]() 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI |
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#10 |
Registered User
Join Date: May 2004
Location: Here
Posts: 167
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Ok...I am an idiot. I put thread tape on it. The previous one had some on it so I figured thats what it called for. I am gonna pull off the tape and try again.
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#11 |
Registered User
Join Date: May 2004
Location: Here
Posts: 167
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I pulled out the temp sender that screws into the top of the thermostat housing. I was just wondering...Is the temp sender supposed to touch the thermostat?? How far does it need to be screwed in???
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#12 |
Registered User
Join Date: May 2004
Location: Here
Posts: 167
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I reinstalled the temp sender without the tape on it and it is still not working. Any ideas?
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#13 |
Senior Member
![]() ![]() Join Date: Jan 2005
Location: CA
Posts: 5,525
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Does your sender look like this?
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#14 |
Senior Member
![]() ![]() Join Date: Jan 2005
Location: CA
Posts: 5,525
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I've got a 180 degree thermostat in my truck. When my engine is warm, the needle is just BARELY above the L zone and into the big middle zone.
The sender should not touch the thermostat. If it did, it might bend the thermostat, rendering the thermostat inoperable. How long are you letting your truck run before shutting it off? My truck takes probably about 3 minutes of driving before the thermostat opens. |
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#15 |
Registered User
Join Date: Apr 2005
Location: Bridgeport, AL
Posts: 363
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I was wondering the same thing as mine is a 160 thermostat and does not move
__________________
67 chevy stepside, 6 cylinder, three on the tree, small window. Currently in resto. |
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#16 |
Registered User
Join Date: May 2004
Location: Here
Posts: 167
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Nope. The old one did though! F***!!!! Where do I pick one of those up?
I figured it wouldn't matter all that much being slightly different. I think all the malt and hops are frying my brain. ![]() |
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#17 |
Senior Member
![]() ![]() Join Date: Jan 2005
Location: CA
Posts: 5,525
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You can buy one a Kragen or any other auto parts store. Just be sure to specify it is for gauges not warning lights.
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#18 |
Registered User
Join Date: May 2004
Location: Here
Posts: 167
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thanks again...I will call around tommorrow to see what I can get. I just looked through LMC's catalog and found that they sell two styles for my year. I didn't look it up in the catalog when I ordered it, I just asked for one in my year, engine size and what not. I guess I will have to be more specific next time. I hope it will work and have a good feeling it will. Take it easy.
Dylan |
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#19 |
Black 72 Chevy
Join Date: May 2002
Location: Los Angeles, California
Posts: 662
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I have a 195 degree thermostat and the needle moves 1/4 when the engine is warm.
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#20 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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That is one reason LMC sucks.
You are lucky you got something that resembles what you ordered. |
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#21 |
Senior Member
Join Date: Sep 2004
Location: Terrell, TX
Posts: 1,967
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If you got the right sensor (for guages versus lites) and it still doesn't work, it's the guage. I went through this twice so far and both times a mechanical temp guage from O'Reilly's saved the day. I hate electrical guages.
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Kelly '05 GMC Sierra SLE Z71 Bone stock except for new bed rail caps. |
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