03 Venture overheating
20

Asked by Nickle1082 Mar 15, 2019 at 04:44 PM about the 2003 Chevrolet Venture LS

Question type: Maintenance & Repair

Have changed the water pump, thermostat, and
temperature sensor and bled the system very well.
But for some reason, it keeps overheating. Not
always, but maybe 50% of the time. I'm at a loss...

3 Answers
27,530

oilyspill answered 5 years ago

Any applicable trouble codes? How hot does it get in degrees F? Does the radiator fan work? If it's overheating, the fan should be running. Maybe combustion gasses in the coolant? Caused by a faulty gasket? Did you check coolant flow through the radiator, if possible, cool engine? If your radiator has a cap and you can actually see the coolant, sometimes, for testing. I leave the thermostat out and hook everything up. Make sure everything full of coolant, even on a cold engine the coolant circulation is instant when you hit the key, don't have to wait on anything to warm-up?

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65,450

firebird338 answered 5 years ago

Are the cooling fan coming on ? Also the radiator fins may be clogged with dirt and bugs causing little to no air flow across the coils. Radiator may also be clogged try using a good radiator flush like Prestone super flush.

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