Question about 2001 Chevrolet Malibu

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2001 Chevy Malibu - have changed out thermostat water pump replaced radiator and still running hot

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  • Chevrolet Master
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Check to make sure fans are working for radiator. if not check coolant tempurature sensor, fuses, and relay. is all air out of coolant system!

Posted on Jul 07, 2010

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I changed my water pump on my 2000 chevy malibu and i change the thermostat and my car is still running hot the gague goes all.he way up


Are you sure the radiator is full of coolant and has no air pockets ?
How long does it take for the temp gauge to go up to hot ?
Do you know for a fact the engine really is hot ?

Jan 29, 2013 | Cars & Trucks

1 Answer

Car runs hot after about 20 mintues


Make sure the radiator is full first.If its normal then. Replace the thermostat. If it still overheats replace the water pump

Oct 14, 2012 | 2001 Chevrolet Malibu

1 Answer

Car runs hot when driven but fine while idling. Replaced radiator, hoses, thermostat


You would probably be better off replacing the belt and pump again since the labor would be next to nothing.
I would want to test the cooling system for exhaust gas and try to verify the head gasket is actually leaking next.
Are you loosing coolant into the cylinders ? There may be something else causing the engine to run hot such as exhaust problems.

Sep 21, 2012 | 2001 Honda Accord

3 Answers

I have a 1999 chevy malibu , front wheel drive with a 2.4 litre twin cam engine . the car overheats and water pours out of overflow hose. what is the cause of this?


well, a lot potentially COULD be wrong. here is my list of what to check.

hoses for deterioration and sponginess, its unlikely but possible your hoses are collapsing due to poor condition and not letting water flow through it

check thermostat for proper operation ( remove thermostat, compress spring to open it insert string then suspend it in a pan of boiling water. it will fall off the spring at the aprox. temp its set at. if it is stuck closed then its your culprit)

check water pump ( hard to diagnose, some cars have a weep hole at the bottom of the water pump that drips water while running at any temp. )

check antifreeze dilution and condition, water cools better that anti-freeze 50-50 is recommended but in hotter climates 25-75 is more appropriate. also the dirtier it is the worse it cools

ensure your engine fan is operating by running the car and observing it with the hood open. at a specified temp ( 200-230 F neighborhood) it should turn on. If it doesn't then check your fuses and wiring and repair/replace as needed

finally check for a clogged radiator/ flush it. If the car was bought used or you know for a fact the radiator stop-leak pellets were used in it. you will most likely have to replace the radiator

other factors are engine timing (shouldn't be an issue for your year of car)

I hope this helps a bit

Sep 04, 2011 | 1999 Chevrolet Malibu

1 Answer

My 2002 chevy malibu is overheating. I have replaced the thermostat, the water pump, the temperature control swtch, and the the radiator, what else could be causing my car to run hot


An actual obstruction in the engine block, wrong spark plug temperature range for your vehicle, or, you may just have a faulty temperature sensor...
Good luck.

Aug 19, 2011 | Chevrolet Malibu Cars & Trucks

2 Answers

Have changed the water pump, thermostat, radiator, radiator cap, all hoses. 2001 chevy venture, still running hot? How long does it take to bleed the cooling system?


If the system fills via an expansion tank, I would recommend removing the top hose from the radiator and filling the system by pouring the coolant in through the hose until it begins to flow out of the upper radiator port. Reconnect the hose and then fill the expansion tank. That should take care of it.

Jun 26, 2011 | 2001 Chevrolet Venture

1 Answer

My 2001 malibu keeps running hot


the main reasons that an engine runs hot are:
1. the thermostat is faulty( not opening)
2. the radiator is blocked
3. the water pump is faulty
you will have to find which one of these is the problem before you can do anything, other problem could be a blown head gasket ....hope this helps.....cheers

Jul 13, 2010 | 2001 Chevrolet Malibu

2 Answers

Radiator problems


it may be a little off, but the lower water hose seldom gets very hot,, as its this hose that suplyes the engine with ""cold water"" the hot water comes out the top hose,, drains down the rad and cools on the way down then enters the engine through the bottom hose """if your engine stayes running in the normal place on the gage,,,and not over heating""" why are you spending money for nothing???""
you wont get the bottom hose to run hot unless the engine is cooking

Oct 30, 2009 | 2001 Chevrolet Tracker

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