Heater Not Working Temp gauge went to max?

SERPENT50

MEMBER
1993 FORD TAURUS
6 CYL
FWD
AUTOMATIC
177,000 MILES

Car temp Gauge showing High temp even when engine is cold and/or just started. Heater was working intermittently but when Temp gauge went to max lost heat in the car altogether(Safety Feature?). When the temp gauge read normally, heat worked fine. Heat Gauge now always reads maximum after only a few minutes of operation. ECT has been shorted to ground. No change in gauge fan does come on. What could the problem be?

Sunday, December 16th, 2007 AT 10:02 PM

2 Replies

2CARPRO JACK

MECHANIC
11,533 POSTS

Sounds like there isnt any fluid in the engine. Check coolant level and replace the thermostat. You cant get any hot air without coolant in the heater core. Look for leaks, need to find out where it is going

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Monday, December 17th, 2007 AT 2:14 PM

KEN L

MASTER CERTIFIED MECHANIC
54,138 POSTS

I agree with 2CARPRO JACK, it sounds like you have a coolant leak which will cause both of these issues, I would use this guide to help find the leak.

https://www.2carpros.com/articles/car-is-leaking-coolant

Also, please go over this video it can help as well

https://www.youtube.com/watch?v=SNRb6pSwYuU&t

Please go over these guides and get back to us.

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Friday, November 22nd, 2024 AT 4:20 PM