Question about 2001 Chevrolet Malibu

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2001 chevelot malibu 3001 engine is running hot. new head gakets, flushed everything for an hour, checked water pump, new thermostat nothing seems to help.......HELP

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This engine needs the water/coolant blead on the top of the engine you should see a pipe with a screw insert ,if not find the top hose ie any water hose at the top of the engine and open it while the engine is running.You should see water /air coming out if the pipe keep going until all air/bubbles is gone.With all air gone the system should be ok,ren for 2 miles and blead again.please rate this answer.adrian,,,,,,,,,,,,,,

Posted on Aug 22, 2010


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My 2001 Isuzu trooper 3.0td is flushing water out of the radiator and their is some pressure when I remove the radiator cap the next morning

there are up to 25+ symptoms
of engine overheat.
flushing only works on toilets.
My guess, is it's leaking coolant somewhere.
There should be no pressure next morning.

Cold water does not build pressure.
but if the vacuum breaker in the cap fails
this can cause vacuum pressure, that sounds like
air pressure. but is not. Reverse
Does engine run ok.
have full power,
no pinging
no water leaks.
if it leaks say where exactly.
locations matter,
1: steam blasting in to side, expansion tank running?
2: steam from tail pipe end.?

here are 27 symptoms or causes.

same on all water cooled engine,s this.
the top fail is bad thermostat , they live about 7 years, says the top makers.
the next is leaks,
then bad RAD CAP,
cooling fan dead? and more.
running water only not Antifreeze 50%

Nov 11, 2016 | 2001 Isuzu Trooper

1 Answer

How do i change water pump on a 2007 dodge caliber 2.0?

Unless the water pump is leaking that is not the problem. You may have a leaking engine cylinder head gaket have it checked by a local shop.

Nov 05, 2012 | Cars & Trucks

1 Answer

Car running hot?

You have replaced the thermostat I hope. Sometimes the water pump
can start slipping on the inside too slowing down the flow, besides a good flushing there's nothing else I know of.

Sep 02, 2012 | Chevrolet Chevy Cars & Trucks

1 Answer

Water bubbling out of my cooler jug

If you have a blockage, which is highly unlikely, use a heater hose pipe connected to a hose pipe to flush the cooling system. I reckon there is either a large air bubble or the water pump is not working properly.

Jul 12, 2017 | Land Rover Discovery Cars & Trucks

2 Answers

Car is running hot 2001 deville, new radiator, themostat, waterpump, still running hot, had it flush out.

as long as the mixture is 50/50 water to coolant then i would say faulty thermostat stuck closed parts have seen 3faulty in a row b4.hope this helps.

Mar 23, 2011 | 2001 Cadillac DeVille

1 Answer

I put new thermostat on and it started running very hot again. I drilled to holes in the thermostat to increase the water flow and it still ran hot. It's weird cause the bottom radiator hose was running...

Flushing a radiator at home is most often a waste of time. The chemicals used by a radiator shop are far stronger than anything you get at the parts supply house. What happens is that the flow you see is deceptive as the water tends to flow around a partial restriction and does nothing to remove it.
Though your garden hose has a lot of pressure it doesn't have the volume necessary. A garden hose will usually be sufficient to flush out a heater core though as it's smaller.
Have a radiator shop flush your radiator core and have a hydrocarbon test done on the cooling system to eliminate the possibility of head gasket problems. When re-filling the system, turn the engine off just before it reaches 210 degrees and let it sit for a few minutes so the thermostat can open, then continue filling. Always fill with the heat on high. Thermostat goes in with the spring end into the engine.Forget about the water pump...unless you got one made for a twin engine marine (CCW) application it has nothing to do with the problem though I've heard but never actually seen that the belt can be installed so it turns backwards.
When the engine is at operating temp cover the grille and force it to nearly go into overheat...the electric fan should come on and the mechanical fan should lock up to try to counteract that.
Don't open the system when it's hot (you found that out already). And, don't allow the engine to actually overheat.
My bet without seeing it? Likely a partially obstructed radiator. 4.0 engines make a lot of rust residue even when maintained. If that's what you have in there, or even the 4cyl. It is more than likely.

Jan 19, 2011 | 1989 Jeep Wrangler

1 Answer

Replaced the water pump, thermostat, intake seals (top and bottom), had the radiator inspected and flushed, checked the fuses, and took it to the local auto parts store and ran the electrical test which...

You can do a few quick checks: turn your heater on full blast in side the car and start the engine. As the engine heats up, you should feel heat blowing inside the car. If not, coolant is not circulating. No circulation can be caused by an air bubble caught in the radiator after it was flushed. Look inside the radiator to check the coolant level. It should be within an inch of the top. Don't remove the radiator cap when it is hot, you can be burned by steam. Leave the cap off and start the engine. As it heats up you should see movement in the coolant if you rev up the engine. If you find no circulation, the new thermostat may be bad or not opening at the proper temperature. Check the fan to be sure it is coming on as the engine heats up. The fan is electric and is designed to cycle on and off to maintain a steady temperature in the coolant. If it is not operating properly, engine will overheat. Hopefully when the radiator was flushed, the fins were also "blown out" to allow good airflow through the radiator, if not clean the fins with a good blast of a garden hose until all the dirt, dust and bugs are gone. These are simple tests. If the engine has overheated, there is a good chance you may have warped the engine head. This is beyond the repair capabilities of most drivers. Again, simple tests are: pull your oil dipstick. If the oil is frothy and the color of hot chocolate, you have water in the oil. If you can see spots of water clinging to the dipsitck, you have water in the oil. Check your new coolant. If there is oil in the coolant, (frothy brown layer or sheen on top of coolant) you have oil in the coolant. Either condition indicates you have a blown head gasket caused by warping the head by overheating. Blown head gaskets often cause overheating. The fix is to remove the head, have it planed and rebuilt and reinstall with new head gasket. This procedure is complex and expensive. Do it yourself requires a head gasket kit and planing and rebuilding the head. Expect that repair to exceed $600.00. Good luck, hopefully you will find a circulation problem.

Sep 12, 2010 | 2001 Chevrolet Malibu

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

3 Answers


did the electric fan on the radiator start up? if this dont start up, it can get the engine overheated , specily if the car run in hot weather , an when the car stay on idle . The other problem is the engine head , the head gasket can blow and you get the compresion presure in the water chanal .Try to se of the oil on engine is gray? If gray you must change head gasket.
Hoope this can help you

Nov 13, 2008 | 2001 Volkswagen Passat

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