temp reading pegged
Thread Starter
Intermediate
Joined: Sep 2002
Posts: 26
Likes: 0
From: Sarasota Fl
temp reading pegged
Just installed a 160 degree t-stat, a variable fuel pressure regulator and a new fan relay. Cranked the car and the temp reading immediately read 299. Car runs fine but temp readout never changes. Fan kicks on and off and plenty of coolant. Any ideas?????
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: temp reading pegged ('86PaceCar)
The temp sensor is a negative ratio varistor; as the temp goes up, resistance goes down.
So, since it (apparently) shows max temp, the resistance is likely zero; sounds like you have a bad temp sensor or a short in the signal wire (most likely).
So, since it (apparently) shows max temp, the resistance is likely zero; sounds like you have a bad temp sensor or a short in the signal wire (most likely).
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: temp reading pegged ('86PaceCar)
Check the wiring comming from the temp sensor up front; there is a temp sensor on the right side below #6 & #8 whose wire might have touched the exhaust manifold (can't remember which goes to the gauge and which to the ECM).
