Hot 2002 Chevy Venture Van


Old 07-08-08, 06:29 PM
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Join Date: Feb 2005
Location: USA
Posts: 339
Hot 2002 Chevy Venture Van

A mechanic replaced my thermostat because the van was running hot. That did not fix the problem, but the mechanic thought is was probably an air lock and could find nothing else wrong. Now it seems to be ok except the temp gauge fluctuates for no apparent reason. Is it possible that my problem is a faulty temp sensor? If so where is the sensor located?
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Old 07-09-08, 06:23 AM
Unclediezel's Avatar
Join Date: Dec 2006
Location: Northeastern PA.
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I would tend to agree with the AIRLOCK theory.....

Fluctuation of the gauge is usually an indication of low coolant level. The sensor can only read the temp of the liquid it is submersed wont read "AIR"......

If you have a Traveling Air pocket, when it passes the sensor, the guage will fluctuate.....This should rectify itself over time, but if not..take it back to the mechanic, and ask him to "Bleed" the system with the release screw on the T-Stat Housing.
Old 07-09-08, 02:29 PM
Join Date: Jun 2008
Location: Eastern Georgia
Posts: 486
I agree with diesel, gotta get the air out before the gauge will read right.
Old 07-09-08, 05:13 PM
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Join Date: Feb 2005
Location: USA
Posts: 339
It has been two days of driving with no overheating and the gauge holds steady at about 3/8ths. I assume the air has worked itself out and all's well. TY.

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