Engine temp gauge issues
Thread Starter
3rd Gear
Joined: Nov 2022
Posts: 3
Likes: 0
From: Utah
Engine temp gauge issues
Hey guys, so I'm having some issues with my temp gauge, seems to want to rest in the center, when I turn the car on it goes up, the water pump went out and while fixing that the gauge decided to start acting up. I don't really want to try and warm her up with this going on, when the cars off and cool it's resting in the center when I start it, it will go up, I'm just looking to see if anyone can point me in the right direction, speedo was out when I got it and tach went out shortly after so if there's a fix for those too without getting a new cluster let me know
Instructor
Joined: Nov 2007
Posts: 1,099
Likes: 280
From: CA
Production year of your LS?
This is probably not the problem, but did you follow the service manual when refilling the cooling system? Was the cooling system purged of air?
You need to determine if the gauge or the sender is bad. Follow the attached instruction to make the determination (through the process of elimination). When checking the sender resistance (Step 17), you can do this with the sender installed, using the engine as the heat source:
If you rather throw parts at it:
TBH, I think the gauge is the problem.
This is probably not the problem, but did you follow the service manual when refilling the cooling system? Was the cooling system purged of air?
You need to determine if the gauge or the sender is bad. Follow the attached instruction to make the determination (through the process of elimination). When checking the sender resistance (Step 17), you can do this with the sender installed, using the engine as the heat source:
- Check the resistance with the engine cold.
- Run the engine to get it to operating temperature - then check the resistance
If you rather throw parts at it:
- Replace the coolant temperature sender (not to be mistaken for the coolant temperature sensor).
TBH, I think the gauge is the problem.
Last edited by paulo57509; Nov 9, 2022 at 04:00 PM.
Thread Starter
3rd Gear
Joined: Nov 2022
Posts: 3
Likes: 0
From: Utah
Production year of your LS?
This is probably not the problem, but did you follow the service manual when refilling the cooling system? Was the cooling system purged of air?
You need to determine if the gauge or the sender is bad. Follow the attached instruction to make the determination (through the process of elimination). When checking the sender resistance (Step 17), you can do this with the sender installed, using the engine as the heat source:
If you rather throw parts at it:
TBH, I think the gauge is the problem.
This is probably not the problem, but did you follow the service manual when refilling the cooling system? Was the cooling system purged of air?
You need to determine if the gauge or the sender is bad. Follow the attached instruction to make the determination (through the process of elimination). When checking the sender resistance (Step 17), you can do this with the sender installed, using the engine as the heat source:
- Check the resistance with the engine cold.
- Run the engine to get it to operating temperature - then check the resistance
If you rather throw parts at it:
- Replace the coolant temperature sender (not to be mistaken for the coolant temperature sensor).
TBH, I think the gauge is the problem.
Instructor
Joined: Nov 2007
Posts: 1,099
Likes: 280
From: CA
Thanks for the reply, I have a 1990 (built 11/89), I followed the instructions on the reservoir, I didn't open my book for it so maybe I didn't purge the air out as needed, do you have any tips on fixing the gauge cluster? I am trying to keep as many parts on it that came with the car as I can, is it possible to rebuild a gauge cluster? And is there anything that could cause them to go funky?
https://www.taninautoelectronix.com/
Pole Position
Joined: Dec 2009
Posts: 3,278
Likes: 317
From: ct
The best way to get the cluster repaired is to remove the entire cluster and send it to Tanin.
https://www.taninautoelectronix.com/
https://www.taninautoelectronix.com/
Although.....they do charge alot to change the temp gauge if yours is actually bad. That gauge is discontinued so I don't know how they'd change it.
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