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Temp Gauge not working.

mr_goodwrench_06

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Ok, after I did my B/L I noticed my temp gauge quit working. I looked around and couldn't see any pinched or broken wires, but I'm pretty sure I damaged it when I lifted the truck. This thing has had the wiring harness in and out more times than I can count by the PO so I usually like to jump the wire around the firewall to see if it's a broken connection or what. Does anyone know the colour and location of the temp gauge wire on the inside of the firewall?

TIA,

Bill
 
Are both sending units hooked up? You have one on the thermostat housing that is for the ECM and another in driver's side head.
 
They are both hooked up at the sending units. I am under the impression that the one on the head is the one for the gauge. Correct? The gauge doesn't move at all...key on or off, it sits well below any reading, just as if the key was never turned, you know?:mad2:

Thanks for the wiring diagram, tommorow I will ring out the wiring to see what can be seen. :)

Bill
 
Heyyyyyy!!!! thats a GREAT idea. Now I have to go outside at 1:00 am just to try this... LOL

I'll post results. :)

Bill
 
It worked!!! Ok, so I guess I need a new sensor...

I have had so many wiring issues with this truck so far that I assumed it was the wire. Plus, it worked before my body lift, so I had thought I had messed up the wire when lifting the body off the frame. Thanks for the help!!

Bill
 
Well, I bought a new sensor and there was no change. :( The wiring is good because when I grounded the wire the gauge pegged all the way to the right.

Maybe the new sensor is bad??? Also, I put teflon on the threads and then thought that might cause a grounding problem so I used a jumper wire to ground the body of the sensor and there was no change.

Thanks for any info,

Bill
 
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