Question about 2000 Chevrolet Malibu

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Engine overheating and overflow fluid is not circulating

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From the little information you tell me.;i would take a go at the water pump not circulating the coolant.adrian,,,,,

Posted on Nov 11, 2010

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Uhm your car is in need to undergo a top overhaul. there is a problem on your cylinder head

Posted on Nov 11, 2010

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Car over heating

The most common cause is low coolant level, so check the radiator and overflow tank and fill as needed. If coolant is over 2 years old, it is a good idea to change the coolant and thermostat-start afresh.
Check the radiator cap. If it doesn't hold pressure of about 13-15 psi in the coolant system, the seal is bad and a new radiator cap is called for. The coolant system is a sealed system, so you should never have to add coolant, save for a small loss through evaporation in the overflow tank. If you are losing coolant, there must be a leak that needs found and repaired-a pressure test of the system should show up a leak.
When the engine is warmed up, the thermostat opens and coolant is circulated through the engine (pushed by the water pump on the front of the engine), into the upper radiator hose to the radiator, and down through the radiator where it is cooled, then back to engine and water pump through the lower radiator hose-a continuous circulation. If anything blocks this circulation (like a partially plugged radiator, or leaves, trash or debris on the outside of the radiator preventing good radiator cooling) then you could get engine overheating. You may want to have the coolant circulation checked, and/or have the radiator and engine flushed. Also possible that the water pump may not be promoting good flow-the impellers on the pump may be worn down to stubs-this can happen if regular maintenance is not observed.
Your radiator fans should also be checked that they work when called for.
The worst case would be a blown cylinder head gasket-another common cause of overheating, and the most expensive fix. A compression test could check for this condition- a cylinder or two with low compression indicates head gasket failure. Coolant can get mixed in with the oil, or it may wind up in the cylinders and get burned, putting out white smoke out the exhaust.
Overheating is bad on engines, get it checked right away.

Apr 10, 2014 | 2002 Buick LeSabre

2 Answers

Can a water pump make water to return to the water bottle

If the engine overheats from a thermostat
stuck closed or bad head gasket

Aug 10, 2013 | Cars & Trucks

1 Answer

VW polo overheating problem and engine become weak?

Everything makes sens 1..2..3... what is done is OK.When is cold take a cap off the radiator and start engine run until it overflows then put back the cap?see what happened.

Jul 27, 2017 | Cars & Trucks

1 Answer

My 2004 golf is overheating fast, is it the thermostst?

It could be the thermostat. It could also be the water pump, radiator, cooling fan or a hundred other things. The first thing you need to do is make sure the engine is cool, then take the radiator cap off and check the fluid level. Check the overflow container as well to see if it has the proper level of fluid in it. If you can see the fluid in the radiator near the top then it could very well be a siezed thermostat. If you can't see the fluid level in the radiator, then fill it and the overflow container to the proper level and start the engine with the radiator cap OFF. Look for any obvious leaks under the car and around the engine and radiator, but keep your eye on the temp gauge. Water pumps have a built in warning device called a "weep hole" which will leak water out to let you know that it's time to replace them. If the radiator appears full and the cooling fan comes on, and the engine still overheats, then it is definately the thermostat. A rapidly overheating engine would constitute no water in the engine block itself which is very dangerous for your engine. If the engine remains too hot for too long, you could end up with much more serious problems.

Aug 17, 2011 | 2004 Volkswagen Golf

2 Answers

MY91 olds toronado trofeo has an overheating problem as follows: I am driving - the temp reading on the VIC and the gauge say 200 - after about 20 mins the temperature reading on the VIC drops to 119 or...

u should do a blok test its a test to chek for combustion chamber gases in cooling system. u can get kit to test most auto part stores. mayb have a compromised head gasket leaking compression into cooling system

Apr 09, 2011 | 1991 Oldsmobile Toronado

1 Answer

My car overheated today,we put cold water in the overflow,to get home,it seemed ok,it was about a 10 minute ride,and it started to go up again,we dont think the fan is coming on,he checked the main area...

Could be a faulty water pump, clogged or stuck Thermostat or clogged radiator. Once the engine cools down remove the radiator cap then start the engine and wait for it to warm up to operating temperature. At operating temp you should be able to see the fluid in the radiator circulate. If you don't then you need to let the engine cool again and remove the thermostat or replace it. And run the same test again. If you still don't see the fluid circulate then replace the water pump.

Jun 19, 2010 | 2000 Hyundai Elantra

1 Answer


Check coolant level in the rad fluid overflow bottle.
If level is ok, check if the rad fan is working.
Also check if you are getting heat inside the car if you put it on hot with the fan on full. If there is no heat, it is probably the water pump that circulates the coolant

Apr 26, 2010 | 1990 Toyota Corolla

2 Answers

Why does my cadillac 1998 deville keep overheating?

Overheating can be numerous things: Fans not working, water pump, thermostat, overflow cap, and the list keeps going. When the engine is running and heats ups, feel the heat of the top hose, if the hose isn't hot, the thermostat is most likely stuck open and needs replaced. If it is hot we know you have circulation. The cap on the expansion tank may be defective, if it can't hold the pressure of the water, it will release at the overflow cap if the cap is bad. Also check the coolant level.

Jan 30, 2010 | 1997 Cadillac DeVille

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