Temp Gauge Broke
Thread Starter
Racer
Joined: Apr 2008
Posts: 333
Likes: 0
From: Portage Michigan
Temp Gauge Broke
I started up the car, noticed the needle bouncing back erratically and then it shot all of the way to the right and hasn't moved. My first thoughts are that its either the sensor or gauge itself. Any one have suggestions on how to check to see where the problem is?
Le Mans Master
Joined: Dec 2006
Posts: 5,557
Likes: 9
From: Oquirrh Mountains
St. Jude Donor '09
If the sensor checks out, it could be the gauge or a short in the wiring.
Melting Slicks
Joined: Apr 2001
Posts: 3,399
Likes: 278
From: Olmsted Falls, Ohio
Could be something as simple as a loose connector at the sensor or it is dirty.
I'd take a look at the connector and check the wiring at the connector, lots of vibration on the wire going into the connector.
Racer
Joined: Mar 2005
Posts: 294
Likes: 1
From: Racine Wisconsin
similar problem
I hesitate to hijack the thread. I have a very similar problem. I took the car out of storage. When the temperature did not read above 120F, I installed a new 180F thermostat thinking it was stuck open. The old one looked perfect. Shame on me.
The block sender reads the correct ohms for 180F when the thermostat opens as noted by the hot water flow in the top hose.
With the thermostat open at 180F and a resistance of around 150 ohms, the temperature gauge still indicates around 120F. That's corresponds to about 200 ohms too high. I am now searching for other sources of resistance.
The block sender reads the correct ohms for 180F when the thermostat opens as noted by the hot water flow in the top hose.
With the thermostat open at 180F and a resistance of around 150 ohms, the temperature gauge still indicates around 120F. That's corresponds to about 200 ohms too high. I am now searching for other sources of resistance.
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Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,116
From: Crossville TN
Teflon tape on the sender threads. The electrical ground for that circuit is the 'bare metal' connection between the threads on the sender and cylinder head. If you used tape or an insulating pipe compound, that circuit resistance could have increased.
Or, the sender is bad....
Or, the sender is bad....
