Temp Sensor not working
Thread Starter
Racer
Joined: Aug 2007
Posts: 367
Likes: 0
From: Jackson MO
Temp Sensor not working
I have just started up my newly rebuilt motor and the temp sensor is not working. I had origionally replaced the very old but functional sensor with a new one, but after reading the posts in the archives the questionable accuracy of the after market sensor, I decided to reuse the old one. When I grounded the sensor wire, the temp gauge bounced around and I assuming the wiring is working. Since the sensor worked before the overhaul, what do you think could cause it not to work now? Could it not be making a ground because of the teflon tape?
Secondly, the paddle connector on the end of the sensor wire was hanging on by a thread and I did replace it. I have also read that shorting the temp sensor wire can alter the reading. Could shorting it by 1/2" alter the reading?
By the way, the motor sounds great!
76 L-82
Thanks again guys!
Secondly, the paddle connector on the end of the sensor wire was hanging on by a thread and I did replace it. I have also read that shorting the temp sensor wire can alter the reading. Could shorting it by 1/2" alter the reading?
By the way, the motor sounds great!
76 L-82
Thanks again guys!
Racer
Joined: Mar 2001
Posts: 272
Likes: 3
From: Marion Ia
I have just started up my newly rebuilt motor and the temp sensor is not working. I had origionally replaced the very old but functional sensor with a new one, but after reading the posts in the archives the questionable accuracy of the after market sensor, I decided to reuse the old one. When I grounded the sensor wire, the temp gauge bounced around and I assuming the wiring is working. Since the sensor worked before the overhaul, what do you think could cause it not to work now? Could it not be making a ground because of the teflon tape?
Secondly, the paddle connector on the end of the sensor wire was hanging on by a thread and I did replace it. I have also read that shorting the temp sensor wire can alter the reading. Could shorting it by 1/2" alter the reading?
By the way, the motor sounds great!
76 L-82
Thanks again guys!
Secondly, the paddle connector on the end of the sensor wire was hanging on by a thread and I did replace it. I have also read that shorting the temp sensor wire can alter the reading. Could shorting it by 1/2" alter the reading?
By the way, the motor sounds great!
76 L-82
Thanks again guys!
Thread Starter
Racer
Joined: Aug 2007
Posts: 367
Likes: 0
From: Jackson MO
Thanks Petes 73. I will pull the tape tomorrow. The new sensor I originally had installed had tape on it from the factory and I thought I might need it.
Last edited by Kahle76; Sep 26, 2009 at 08:28 PM. Reason: reword
Melting Slicks
Joined: Sep 2004
Posts: 3,223
Likes: 666
From: Northeast
Scroll down to the bottom of this discussion:
http://www.lbfun.com/warehouse/tech_...eCF-Thread.pdf
Someone actually tested the teflon tape theory.
http://www.lbfun.com/warehouse/tech_...eCF-Thread.pdf
Someone actually tested the teflon tape theory.
Advanced
Joined: Jul 2009
Posts: 55
Likes: 0
From: Tucson Az
I have sending unit problems myself. My advice to all, don't touch it, don't even put your finger on it. It is so hard to find a close match. I bought a sensor that was reading 30-40 degrees higher than the original. I currently have one that is 20 degrees higher than the infared gun is reading. I am still looking for one that is very close to acurate to give me that piece of mind while driving. My vette is a 1981.
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Thread Starter
Racer
Joined: Aug 2007
Posts: 367
Likes: 0
From: Jackson MO
Scroll down to the bottom of this discussion:
http://www.lbfun.com/warehouse/tech_...eCF-Thread.pdf
Someone actually tested the teflon tape theory.
http://www.lbfun.com/warehouse/tech_...eCF-Thread.pdf
Someone actually tested the teflon tape theory.