Question about 2000 Chevrolet Venture
Replaced water pump,radiator,thermostat. still overheating
Have you replaced the intake manifold gaskets? These engines have a history of leaking intake manifold gaskets. Water leaks into the intake and is burned off in the cylinders. If the engine overheats enough times, you will eventually blow the head gaskets.
Start by performing a compression check to make sure you haven't blown the head gaskets. Then make sure the car is really overheating (i.e. check the temperature of the engine with a infrared thermometer (they are cheap at Harbor Freight).
If it is really overheating, and you've really changed everything else, you need to change the intake manifold gaskets. Be sure to get the improved gaskets from the parts store (they have a metal core with rubber coating).
Posted on Jan 07, 2013
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Posted on Jan 02, 2017
Blow out the radiator core from the engine side with compressed air to get rid of bugs and other debris. Check the fan clutch if mechanical drive. If electric fan, make sure fan(s) come on when hot. You may have combustion products entering the cooling system. Check with auto parts supplier for test kit for same or check with a well equipped shop for a similar test. Make sure that both radiator hoses are not obstructed internally. Hope some of this helps!
Posted on Jun 10, 2010
I hate to be the one to tell you but water (coolant) is in your engine oil. The more you run your engine the more you will hurt the engine. Stop running the engine. You have eather a blown head gasket or a cracked head or both. Your engine is full of scum and must be rebuilt or replaced. All of the scum (oil and water mixed) will never come out. It washes the lube off of all you engine parts and clogs up small oiling holes.
Posted on Sep 29, 2009
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
More then likely, your low on anti-freeze. The heatin system in a car is simple. The motor heats up and uses antifreeze to cool. the warm antifreeze runs through the blower system of the heater. The hot antifreeze heats the blowing chambe which cause the air temp to rise. When the heater blower is engaged, it blows the hot air off the antifreeze chamber and warms the car. When your low on antifreeze, the car doesn't have enough fluid to keep the motor cool, and theres also not enough fluid to warm the blowers chamber. Just check your fluid and add accordingly, make sure to add antifreeze of about a 50/50 mixture. You can buy it premixed if your not crasy about dilluting it yourself. DON'T USE STRAIGHT WATER! It will corrode the cooling system and lead to EXTREMLY COSTLY repairs.
Posted on Nov 20, 2009
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