Question about 1999 Oldsmobile Aurora

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1998 aurora overheating

1998 Aurora is overheating replaced radiator cap on reserve tank, thermostat and flushed radiator any help would be great

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I had the same problem and tried several things that didn't help. A friend introduced me to a Northstar mech. that explained the real problem. Internal engine relief was faling which created overheating between cylinder sleeves and engine block creating blow back pressure in cooling system. There is a fix for this. The mechanic helped me with the problem and car is running once more... Anyone thinking they have a head gasket, intake gasket, or thermostate problem should look at this fix.

Posted on Jul 28, 2012

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When does it overheat? Low speed or high speed cruising..

Posted on Jun 01, 2009

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Posted on Jan 02, 2017

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1987 dodge w150 power ram overheats.could this be air in the coolant lines? I parked the truck because it overheated while driving it.the temp Guage went over 220 -230 by the time I shut it off and kept...


If the unit overheated and there was no coolant flowing into the reserve tank, then there is two possible issues that must be addressed immediately. Either (1) There was not enough coolant in the system. This is because when the coolant heats up it expands and will go to the reserve tank. The fact that there was going to the tank indicates that the system is less than full, or (2) The radiator pressure cap is defective.

I would flush the cooling system, clean the reserve tank, replace the radiator cap, and refill the system and retest.

Dec 29, 2014 | Cars & Trucks

2 Answers

I have a 1998 oldsmobile aurora that is overheating. no leaks, runs fine then temp goes up and coolant boils up to the resevoir cap and comes out around the cap. replaced thermostat. fan comes on


Try changing radiator cap if there is no water in the oil it is not a head gasket could be system just needs a flush. It could also be the water pump is not pumping well try the cap first.

May 30, 2014 | 1999 Oldsmobile Aurora

1 Answer

97 aurora overheats new stat flush system oil not milky or over filled new cap still overheat but when i put the cap on half way tighten i dont overheat whats my problem


Was the engine overheating before you replaced the thermostat ?
By not putting the cap on tight, you are not allowing the cooling system to build up pressure. So it could be a restriction somewhere like a radiator hose.

Apr 23, 2013 | Cars & Trucks

1 Answer

My 1998 oldsmobile is overheating my fans work it has a new thermostat and new water pump i have flushed the cooling system


that leaves the radiator or the head gasket, do a compression test, look at the plugs for a whitish deposit, sure sign of coolant, good luck

May 28, 2010 | 1998 Oldsmobile Aurora

3 Answers

Keeps overheating


When the car is completely cool,check the electric fan(s) for smooth rotation.

Clean/check/change the thermo sensor,contact and wire.

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Excavate air pocket in coolant system / check for head gasket leak

This test will kill two birds with one stone.

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MAKE SURE THE COOLANT SYSTEM and ENGINE IS COLD!

RAN THIS TEST IN A WELL VENTILATED AREA ONLY!

You will spill some coolant during this air pocket purge test.......BE KIND TO THE ENVIRONMENT and ANIMAL please clean up after the test!

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Put the front end on a pair of ramp or park your car on a VERY STEEP HILL (radiator facing top of the hill) .

Top of the coolant reserve tank

Let it ran for 10-15 minutes.

Monitor for air pockets escaping from coolant reserve tank.

Small amount of bubbles is OK at 1-5 minute mark

After the thermostat open up (after 195 F warm up) at
5-12 minute mark or after high idle you should see less bubbles.

If you do not see any in rush of bubbles then your thermostat may be partially stuck or rusted badly inside the thermostat hosing.

Give the thermostat host few gentle taps.

If you see larger bubbles surfacing after 15 minutes then should do a hydrocarbon (HC) dye test to test for potential head gasket leak.

Let engine cold down and top off coolant reserve tank.

Start monitor for coolant lost

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A coolant flush is require every 2 years or 24,000 miles.

I recommend the thermostat that has a relief pop-let to reduce the change of burst radiator and coolant hoses.

Make sure you get a new thermostat gasket,black RTV and fresh coolant for the job.

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Please post more information by clicking the comment link on the top right corner.

DON'T FORGET to RATE ME if my tip is helpful to you!

Sep 30, 2009 | 1997 Oldsmobile Aurora

1 Answer

Leaking antifreeze


Check your hoses entering your block and radiator. you may need to bring your vehicle into a garage and ask for a "Pressure Test" this will indicate if you have a crack or leak.
Good Luck.

Sep 10, 2009 | 1997 Oldsmobile Aurora

1 Answer

Causes for overheating in a 1997 oldsmobile aurora


Do the fan(s) come on when hot? Blow out the radiator core with compressed air (from the engine side) to clear it of bugs and other debris. Make sure the radiator is full to the top (when cold) and check the radiator cap seal rubber and the over-flow tank and tubing for leakage. It's possible that the water pump impeller is slipping on it's shaft and not pumping water properly. Remove the thermostat temporarily and remove the radiator cap. Remove some of the water so that the level is somewhat below the cap bottom, then start the engine and watch for rapidly moving water. That will show that the pump is moving water well. Allow the engine to heat up and keep track of the water movement. Shut the engine off at low end of 'normal' on the temp gauge and replace the cap so that it doesn't blow out boiling water into your face. Replace the thermostat and top up the water when cold again.

Sep 06, 2009 | 1997 Oldsmobile Aurora

3 Answers

Please Help!


YEP A BAD BELT TENSIONER CAUSES DRIVE BELT TO SLIP.CAUSING WATER PUMP TO TURN TO SLOW.CAUSING ENGINE TO OVER HEAT.

Sep 04, 2009 | 1996 Oldsmobile Aurora

2 Answers

1997 olds. auora overheating


feel of the top hose, if it's soft when the car is running and at operating temperature then it's probably air in the system, not allowing the pump to pick up the antifreeze. To get the air out let the car cool completely (like overnight) then fill the reservoir, leave the cap off and run the car until it comes up to normal operating temp. (watch to see you keep enough antifreeze so the tank doesn't go empty.
My 97 Aurora did the same thing and this fixed it.

Jan 11, 2009 | 1997 Oldsmobile Aurora

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