Question about Oldsmobile Alero

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Water bubbling out overflow

2000 Alero. Over heating, water blows out the overflow. Replaced water pump, thermostat, intake gasket, and still overheats, then replaced heads, car still overheats and blows out the overflow. Any other suggestions

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  • Sharon Alkire
    Sharon Alkire Mar 20, 2014

    yes

  • Sharon Alkire
    Sharon Alkire Mar 20, 2014

    Yes bleed cooling system

  • yadayada
    yadayada Mar 20, 2014

    Then you need it checked for a leaking head gasket, these heads are aluminum and if you overheat the engine they can blow the gaskets again.

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  • Oldsmobile Master
  • 76,109 Answers

Did you bleed the air out of the cooling system?? This is a must or it will overheat.

Posted on Mar 20, 2014

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Posted on Jan 02, 2017

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SOURCE: 1999 olds alero leaking coolant

problem could be heads bolts . i put new bolts in put a little sealer on them . make sure your bolt holes is clean free from debris. put a lillte sealer on intake gasket on top and bottom where coolants travel. if all was done . drain engine oil in clean container .set it aside. take radiator cap off .you a coolant pressure rise kit .put a pan under oil pan with drain plug still off .pressure your radiator about 10 psi. make sure you have antifreeze in radiator and engine . when you pressure up to 10 psi look under the car if coolant comes out oil pan. you got leaking head gasket. if not .put oil pan plug back on . put oil back in car . check your freeze plugs also.

Posted on Mar 17, 2009

  • 66 Answers

SOURCE: Truck overheat after thermostat was replaced. Blows cold heat too

Have you checked the coolant to make sure its full.Try this.Run the truck with the radiator cap off and let it warm up.When it reaches normal temps sqeeze the rubber hoses.These hose should be a little hard to squeeze.If they are the thermo and water pump are fine.

Posted on Apr 28, 2009

  • 64 Answers

SOURCE: 2000 Malibu keeps running hot.

You replaced the head gasket but did you get the head or heads checked for cracks or check the block for warpage?

Posted on Nov 21, 2009

  • 819 Answers

SOURCE: I have a 1997 Chevy Malibu that is over-heating.

if you do not turn the a/c on, do the fans cycle? turning on the a/c will signal fan demand - this indicates the the fan and circuits are OK. if the fan cycles with the a/c off, we can move away from a fan issue. if not, look into that. have you tested the rad cap? i believe this model has one cap on the expansion tank and no rad cap, if i remember correctly. i have actually run into one of these cars where an incorrect cap was installed, causing similar symptoms. it sounds as if you know what you are doing, but is there any possibility that there is an air lock in the cooling system? if there is heat coming out of the vents when the car is hot, there is probably no issue there, and also likely means the waterpump is ok. let me know and we'll talk later if necessary, good luck!

Posted on Apr 02, 2010

roniecon
  • 6826 Answers

SOURCE: my 1997 cadillac eldorado overheats plugs,

Make sure the air in the cooling system is bled out,and make sure the cooling fans are coming on,and going off on there own.If they come on,they have to go off too,when it cools down.If the cooling fans do not come on,bled the cooling system,and replace the coolant sensor,this tells the computer to activate the cooling fan relays.Also check the fuse,and the cooling fan relay.

Posted on Apr 14, 2010

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Overheating


OVERHEATING CAN BE CAUSE BY MANY THINGS LIKE FAULTY THERMOSTAT AND FAULTY RADIATOR PRESSURE CAP,TOO MUCH WATER IN COOLANT SYSTEM NEED 50 / 50 WATER AND ANTIFREEZE.LOOK FOR WATER PUMP WEEP HOLE LEAK, IF COOLANT LEAKING OUT WEEP HOLE WATER PUMP BAD NEED REPLACING.CHECK FOR LOW COOLANT LEVEL, YOUR RADIATOR OVERFLOW JUG SHOULD HAVE COOLANT AT THE FULL COLD MARK IF NOT KEEP ADDING COOLANT INTO COOLANT OVERFLOW JUG UNTIL COOLANT STOP DROPPING AND FULL COLD MARK, IF OVERFLOW COOLANT JUG WAS EMPTY RADIATOR IS LOW ON COOLANT.WHICH CAUSE AIR IN COOLANT SYSTEM KEEPING THE ENGINE COOLANT TEMPERATURE SENSOR FROM BEING SUBMERGE IN HOT COOLANT WHICH TURN ON THE COOLANT FANS.WHEN ENGINE COOLANT TEMPERATURE GET CERTAIN SET TEMPERATURE LIKE 190 DEGREES THE PCM AND COOLANT SENSOR WILL TURN ON COOLANT FANS, IF VECHICLE OVERHEATING COOLANT FANS NOT WORKING EITHER YOU HAVE FAULTY ENGINE COOLANT TEMPERATURE SENSOR CHECK COOLANT FANS FUSE AND RELAYS. YOU CAN CODE SCAN CAR TO SEE IF YOU HAVE FAULTY PCM, FAULTY ENGINE COOLANT TEMPERATURE SENSOR OR FAULTY COOLANT FAN RELAY.IF COOLANT FAN AND ENGINE COOLANT TEMPERATURE SENSOR OKAY,YOU HAVE CORRECT COOLANT LEVEL IN COOLANT SYSTEM, THERMOSTAT AND RADIATOR PRESSURE CAP BEEN REPLACED, YOU COULD HAVE BLOWN HEAD GASKET CHECK ENGINE OIL LOOKS LIKE MILK SHAKE HEAD GASKET BLOWED ALSO WHEN HEAD GASKET BLOWED YOU CAN DRIVE CAR SHORT DISTANCE START OVERHEATING AND YOU LOOSE ENGINE POWER SUSPECT BLOWED HEAD GASKET.

Aug 04, 2011 | 1999 Oldsmobile Alero

2 Answers

My temp gauge goes up to the hot but doesn't overheat but blows cold air then the gauge will drop to bout half n then start blowin hot air replaced thermostat n a new rad cap could it be the heat sensor


No, because it blows cold air when it gets hot. There is air in the system or the coolant is low. Intake manifold gaskets are a very common problem on these engines and if left unattended to can cause even bigger problems such as head gaskets if the engine over heats too much. Check the coolant level and if it is low, look for leaks at the water pump, radiator and especially the intake manifold where it meets the head. Also, pull the oil dip stick an/or the oil cap to see if it looks milky. If it does, there is coolant getting into the oil.

Apr 08, 2011 | 1997 Oldsmobile Silhouette

1 Answer

I have exhaust bubbling out of my radiator over flow and dont kno if its cus the head gasket is blown or if its just steam evaporating because the water pump isn't working on a 2000 hyundai accent


If you have excessive bubbling comming out of the radiator or overflow, its usually because of compression leaking into your cooling system caused by a blow head gasket or cracked block. If the watter pump isnt circulating coolant its most likely over boiling the coolant in the motor. Best suggestion is to leak down test the motor with the rad cap off. See if you're loosing pressure and if so, check if the pressure is comming out of the rad. If it is loosing pressure and comming out of there, you have one of the following issues above. If not repair the water pump, change the thermostat as well and re-check

Jul 31, 2010 | 2000 Hyundai Accent

2 Answers

2003 Buick Century is over heating in the morning only. Radiator, thermostat and sensor have all been replaced. Water pump and fans have been checked. When it idles it gets hot but when you rev the motor...


Sounds like the intake gasket or even possibly the head gasket have gone south if everything else has been replaced. Internal engine leaks will cause engine to overheat very easily.

May 19, 2010 | 2003 Buick Century

2 Answers

My Pajero 2800 Turbo Diesel blows water into overflow tank


Have a look at the thermostat.
If it's blocked shut, there won't be the circulation through the rad.
You may need to invest in some 'radweld' type treatment too.
Good luck with that.
Don't forget to rate, thanks ;)

Aug 01, 2009 | 2000 Mitsubishi Montero

2 Answers

I had new intake manifold gadket installed noe


Since problem developed after head gasket replaced. I would look at head gasket. Try re-torque head bolts. Was correct gasket size installed? (due to wear and tear, sometimes OEM gasket is no longer correct).

Jul 09, 2009 | 1997 Lincoln Continental

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2000 Malibu...only 43,000 miles...just bought..fine for 4 weeks, then temp guage goes up FAST..pulled over, cooled off, added water...had to tow...replaced cracked radiator cap & thermostat..Ok for 4 days,...


hi its rob cylender head or cylender head gasket or ileak in cooling system check oil for creamy white sludge if non then take of radiator cap start engine see if it bubbles up turn of engine and smell into the radiator for fuel check accesive amounts of water or white smoke coming from tailpipe ether one of these maens cylender head of gasket blown

Apr 26, 2009 | 2000 Chevrolet Malibu

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