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Temp stuck at 75 degrees
1999 Mercury Sable

Temp stuck at 75 degrees

(1999 Mercury Sable)
the temperature is stuck at 75 degrees and there is no heat. this occured after a battery change.
4 answers & 2 comments
Popular Answer
on October 20, 2010
I'm wondering if you are speaking about your electronic temperature control (EATC) sticking at 75 degrees? Assuming your Sable is equipped with the EATC system.

If this is the case, the thermostat won't help you. You would have an issue with the EATC system. Just another point of view potentially...
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on October 20, 2010
Good catch Dave! I need to take some more psychic lessons, lol.

Zee
on October 20, 2010
You know, not many of the Sables were EATC, but it's just a hunch...from our standpoint, our interpretation of 75 degrees is a thermostat all day long, you know?
General Diagnosis
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on October 20, 2010
I'm wondering if you are speaking about your electronic temperature control (EATC) sticking at 75 degrees? Assuming your Sable is equipped with the EATC system.

If this is the case, the thermostat won't help you. You would have an issue with the EATC system. Just another point of view potentially...
Sign in to reply
on October 20, 2010
Good catch Dave! I need to take some more psychic lessons, lol.

Zee
on October 20, 2010
You know, not many of the Sables were EATC, but it's just a hunch...from our standpoint, our interpretation of 75 degrees is a thermostat all day long, you know?
on October 20, 2010
Looks like a bad thermostat. It's just a coincidence that happened with the battery change. Replace the thermostat an all should be good.

Zee
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you could need a tune up mine did that and i got a tune up and it hasnt done it since
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flush heater core. i have one and have replaced heater core and now have to flush every couple of months
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