Question about 1998 Chevrolet Cavalier

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My car is overheating. What is going on

Put new fan on to cool motor checked hot and cold wires. They work but car is heating in 10 minutes pass 200.what do I check next?

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Have you checked the thermostat? Run the car until the gauge shows normal temp and carefully check the upper radiator hose. If it isnt hot and if you can easily squeeze it the thermostat isnt opening to let water flow to the radiator. If it's opening, check to see if the fan is coming on. If that's not running, check the voltage at the fan, then the fan relay. If you aren't getting power at either of those places it could be your temp sensor.

Posted on Dec 03, 2014

  • Jeff Youtsey
    Jeff Youtsey Dec 03, 2014

    I agree that It sounds like a themostat. But could also be the radiator is plugged up on the bottom or the cooling rails are! If the heat blows hot air then it's not the heater core doing this! Try all the above and let us know! Thanks

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What do you mean by "checked hot and cold wires" ?

Posted on Dec 04, 2014

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I had this problem with my '98 Cav for years. We never did figure out the problem. Everything that you could possibly think of to do with the heating and cooling system, was either replaced or flushed. It was to the point where we had to "jimmy-rig" a special thermostat to put in the car. It would keep the car from over-heating, definitely, but, I wouldn't have heat in the winter, which sucked. BIG TIME. Definitely check everything desertracer has told you to. Is there a coolant leak anywhere under your car...? If you have a leak anywhere in the system, that would create problems and also create air pockets that aids in over heating, as well. Also, do you have Dex-Cool or the green stuff in your car...? If you have the Dex-Cool, chances are, you need a flush. That stuff creates a lot of build up inside the lines and rad.

Posted on Dec 03, 2014

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Does the fan run?. is there coolant in radiator ? possibly the thermostat is not opening. fan belt loose that turns the water pump.. If all of this is OK.. then you could have a bad water pump, clogged radiator, or engine damage such as blown head gasket or cracked head. .. If you ran it hot for long you could have caused engine damage.. and one of the original problems was minor.

Posted on Dec 03, 2014

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1998 is too old a year for a cavalier. They are "throw away cars", and many are in junkyards now. Sell it for the scrap metal price and buy a decent car. Try to stay away from Cavaliers, and Grand Am's.

Posted on Dec 04, 2014

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Posted on Jan 02, 2017

  • 3 Answers

SOURCE: overheating and no heat from the vents

YOU HAVE AIR IN YOUR WATER SYSTEM OR GOD FORBID A LEAK IN YOUR RADIATOR OR THE PIPES CAUSING LOSS OF WATER IF YOU HAVE AIR IN THE SYSTEM THIS CAN BE A PAIN THE BEST SOLUTION TAKE IT TO AN EXPERT

Posted on Oct 27, 2008

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SOURCE: CHECK ENGINE LIGHT ON, AUTO ZONE SAYS COOLING FAN SHORTAGE

If the fuse is blowing there is too much resistance in the cooling fan moter. Replace JUST the cooling fan motor and the fuse. The A/C always turns the cooling fan ON when turned on. That is why the A/C messes up when the fan motor is bad. Replace the fan motor and the A/C problem will be fixed too. :)

Posted on Mar 21, 2009

Gort007
  • 1187 Answers

SOURCE: engine light comes on and says engine overheating

Could be three things: Hopefully the first...
1. radiator fan not blowing. (most likely)
2. Radiator clogged (not likely)
3. Head gasket blown... (very possible)

If #1, system cannot detect fan not blowing. It may be the fuse or the relay switch, disconnecetd wire at fan, or burned-out fan motor.
If #2, Flush radiator
If #3, you will see WHITE smoke out the tailpipe and excessive water drops.
Your new oil will have a "milky" look (check the oil dipstick). That is water.
When engine is COLD, remove radiator cap and start car. You will notice high-pressure "bubbles" squirt out of the radiator, even before the engine warms up.

I hope it is #1. and that this is helpful.



Posted on Sep 08, 2009

Gort007
  • 1187 Answers

SOURCE: 2001 Impala Cooling Fan Not coming on ever and car

Cooling fan relay switch (in the fuse box uner the hood). Look for othger relays in there that are the same type number (they are all marked). If you find one that is the same as the cooling fan relay, then swap the two relays and check. (Turn on car and turn on A/C ... fan will start ... or not).

Fan motor could be bad (most likely).
If you remove it yourself, don't scrapr the radiator fins with the fan blades.

Hope this helps!

Posted on Sep 18, 2009

emissionwiz
  • 76846 Answers

SOURCE: car is overheating coolant fans seem to be working

REPLACE THE THERMOSTAT 1ST, THEN IF THAT DOESN'T HELP HAVE THE RADIATOR CLEANED PROFESSIONALLY, THIS MEANS REMIOVE IT AND TAKE IT TO A RADIATOR REPAIR SHOP, THE LOWEER CORES GET CLOGGED SO YOU CAN'T SEE THE PROBLEM, I HAVE A 96 C4, AND MINE WAS FIXED WITH A $12 THERMOSTAT, I AM ASSUMING HERE THAT U ARE NOT LOW ON COOLANT, ALSO IF THE MILES ON THE ENGIJE ARE OVER 60,000 PUT A WATER PUMP ON IT BEFORE THE DARN THINGS LEAKS AND TAKES OUT THE OPTI SPARK DISTRIBUTOR WHICH IS RIGHT BELOW THE WATER PUMP.

Posted on Apr 12, 2010

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