Question about 2001 Oldsmobile Alero

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My 2001 Alero keeps over heating, we had the head gaskets replaced, themastat replaced, rad unclogged. Still overheating, so what now?? Thx

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  • swlgiles Jul 25, 2010

    Thanks everyone!! We actually figured out the prob. Air locked in bottom of rad.

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2001 has2 heat sencers if just one is not working this will keep the fans from coming on and that is a common problem with the check the one losest o the thermastate

Posted on May 06, 2012

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Water pump is not pumping water throw the motor. my car did that and i check all the coolant temp senors and the fans are working

Posted on Jul 25, 2010

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Are the fans coming on?

Posted on Jul 22, 2010

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  • Jonathan S
    Jonathan S Jul 22, 2010

    Air pockets can also cause overheating issues as well.

  • Jonathan S
    Jonathan S Jul 22, 2010

    Try unplugging the coolant temperature sensor the fans should automatically come on with it disconnected.

  • Jonathan S
    Jonathan S Jul 25, 2010

    A waterpump is possible.Dexcool can be very corrosive as it breaks down becomes very acidic. The only way to really check for that is remove it to see if the fins are decayed or using a camera through where the lower radiator hose that connects to the waterpump housing.

  • Jonathan S
    Jonathan S Jul 25, 2010

    I have run into that several times.Glad you got it.

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1 Answer

Over heating


Bubbles coming up in your coolant resevoir tank, and either consistent or random overheating, could indicate a head gasket leak. Check your oil dipstick, and inside valve cover where you add oil. If engine oil looks like chocolate mousse, it's a sure indicator of head gasket leakage.

Apr 17, 2014 | 2001 Oldsmobile Alero

1 Answer

Overheating replaced thermostat,no heat,sqeak at waterpump,top rad hose gets hot and solid


You vehicle blows head gasket very easy,to say it overheated and radiator is solid then you have combustion entering the cooling system. when the engine has cooled down and you can open the radiator cap smell the coolant does it smell like fuel or exhaust? If it does you definately have a head gasket

Mar 02, 2012 | 2001 Jeep Grand Cherokee

1 Answer

My 01 deville wont stop overheating we replaced waterpump thermostat waterpump cover and all the gaskets wat else could it b


check the rad and cooling fan on motor also check fan relays
make sure rad colling fins are clean if all this check out o.k.
cylinder heads may be plugged up try reverse flush if it dont help
head gaskets or heads

Apr 02, 2011 | 2001 Cadillac DeVille

1 Answer

I have a 2001 alero and it is overheating, I have replaced the thermostat, water pump, heads, head gaskets, fan motors, relay switch to the fans and it acts like it wants to run hot. When I "test...


The most probable cause of both problems is with the replacement heads. As far as knocking goes, hard to diagnose from here - usual causes are a noisy hydraulic lifter (which, if severe, should be replaced) or a failing piston bearing or incorrect head/head gasket (piston banging on head which is very serious). Also, if the head gaskets were incorrectly installed or the wrong heads were used, you could have blocked some of the cooling water ports.

Overheating can also be caused by a blocked radiator - the system circulates the cooling water into the bottom of the radiator and the water cools as it circulated up to the top and back to the engine. A quick way to check when overheating is to CAREFULLY see if there is a hot-to-cooler temperature gradient in the radiator from bottom to top.

Oct 08, 2017 | 2001 Oldsmobile Alero

1 Answer

2001 Olds Alero suddenly quits sending heat then sometimes it does and sometimes it overheats. Is this a water pump or a thermostat. Help. Mallory M


Check the cooolant level, sound like theres a leak somewhere, water pump, hoses, t-stat bad, rad cracked, heater core leaking, bad rad cap, cooling fans not working, you need to get it looked at really soon, before you get it to hot and blow a head gasket.

Dec 30, 2010 | 2001 Oldsmobile Alero

1 Answer

My radiator was changed and the thermastat but my car is still over heating, why could that be? nohoses r broken.


sounds like a head gasket blown, when engine is cold, remove rad cap and make sure rad is full, start engine and see if bubbles are pushed out of the rad filler spout, a blown head gasket will pressure up your coolant system, was the rad changed because of overheating, do you have the thermostat installed wrong? the sensor side toward engine. if head gasket is ok, next you could check your rad cap, is the gasket ok? can you check if it holds the required pressure. might need replacing. also if you could pressure test the coolant system and see if it holds.

Dec 29, 2010 | 1997 Mazda 626

2 Answers

I've intrepid car has overheating problem has thermostat, working water pump, and keeps overheating


Might be blown head gasket. Is there oil in the coolant or coolant in the oil? Either of these would tell you that.
Also the exhust can get into the coolant and make the coolant low all the time.
I had two Chrysler products that the exhaust forced coolant out and had a bad head gasket.

Dec 30, 2009 | 2001 Dodge Intrepid

2 Answers

2000 Grand Am Gt 3.4 V6 keeps overheating,


Thermostat, cooling fans, water pump, rad (not plugged wirth scale)

Jul 19, 2009 | 2000 Pontiac Grand Am GT

2 Answers

2001 pontiac montana overheating no warm air when heat is on


Might be a weak or failing water pump... Does it leak antifreeze or do you have to add antifreeze very often? When the engine gets to operating temperature squeeze the top radiator hose and see if you can feel pressure from the water pump forcing water through it.

Feb 21, 2009 | 2001 Pontiac Montana

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