Question about 2001 Chevrolet Venture

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I have a Chevy Venture 2001 that has serious problems with the engine overheating. I already replaced the thermostat & antifreeze. When I drive it just a block, the needle on the heat dial jumps from cold to hot. Then when I stop the car it jumps back to cold. I suspect it's the water pump that doesn't work, because sometimes when I take the cap off the radiator it appears the water is moving, and other times I take the cap off & it it's not moving. Also when turning on the heat the heat blows cold. I wonder if there is a known issue with Chevy Ventures overheating & if it is due to the water pump, radiator or some other part. Any advice on this problem would be very much appreciated.

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You should probably replace the temperature sensor first, make sure the car is indeed overheating.

If after replacing the temp sensor, and the problem does exist, then buy a flush kit, and back flush the system, it may be clogged.

Posted on Nov 16, 2009

  • dps1948 Mar 06, 2011

    Did you (PROPERLY) bleed out all the air out of the cooling system after you changed the coolant? If you forgot this then theres your problem.

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