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Old 12-06-2005, 01:33 PM   #1
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Default Grand Am Question (engine temp)

So my sister has a grand am that will not heat up. we have had the cooling system flushed, and replaced the thermostat as well (its not sticking open). The car will hardly get above 110*!! my dad and i are about out of ideas, so has anyone else got anything!
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Old 12-06-2005, 01:49 PM   #2
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Have the temp sensor checked. I have a feeling it is getting above 110 but the sensor has gone bad.
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Old 12-06-2005, 02:17 PM   #3
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Quote:
Originally Posted by BillBoost37
Have the temp sensor checked. I have a feeling it is getting above 110 but the sensor has gone bad.
I agree. That'* what was wrong with my Chevy....

Okay...so that was ONE of the things wrong with the Chevy.
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Old 12-06-2005, 02:38 PM   #4
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Are you getting decent heat out of the vents? If not, try changing your thermostat. It may be stuck open.

If that doesn't solve the problem, cover the bottom half of your radiator for the winter. I had to do that with a cold-hearted car a few years ago. Tempted to do that with my 95 this winter to prevent having to remove my drilled 180 thermostat seasonally.
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Old 12-06-2005, 02:53 PM   #5
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the heat out of the vents is weak at best. the blower motor doesn't blow either.

we covered almost all of the raditor too, didn't make much of a diff...

now how would i go about checking the actual engine temp. just take a pyrometer and check the block tem? or is it coolent temp?
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Old 12-06-2005, 02:54 PM   #6
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I agree on the thermostat...just because it'* new doesn't mean it won't fail!

I had a fail safe go bad on me last winter in my Bonnie. Stuck open after 2 weeks of use. ...beats being stuck closed, though!
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Old 12-06-2005, 02:55 PM   #7
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I think a scan tool would...the PCM is probably seeing the true temp, but it could be the gauge itself...
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Old 12-06-2005, 05:38 PM   #8
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Quote:
Originally Posted by Darrel
now how would i go about checking the actual engine temp. just take a pyrometer and check the block tem? or is it coolent temp?
Darrel, if you have a pyrometer, by all means use it if you don't have access to a scantool. Find a convenient place on the engine block to measure temperature, or right on the thermostat housing. The Engine Coolant Temperature sensor (ECT) should be in close proximity to the thermostat I believe.
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Old 12-06-2005, 06:19 PM   #9
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what year GA
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Old 12-06-2005, 06:31 PM   #10
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Wait a minute? Your blower isn't putting out much air either? I smell a dirty heater core. Procedure is in Techinfo for cleaning it.
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