Question about 1991 Geo Metro

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Gets really hot before fan comes on,rite to the red line.

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The temp sensor for the fan is going bad assuming the car cools down after the fan comes on and stays cool intil the fan turns off again. replacing it should fix your problem.

Posted on Jun 04, 2010

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My 97 hyundai Accent I can drive it 100 miles and electric cooling fan doesn't come on ,doesn't get hot


Not necessarily. The vehicle, in motion, has enough air flow through the radiator that the fan is usually not needed. The fan will run if the vehicle sits and idles for a while and the coolant temp rises since there is no air flow through the radiator. If you are worried about fan operation, there are two things to check. The fans will ALWAYS come on if the A/C is turned on. That is because the fans pll air through the A/C coil in front of the radiator. Air must flow through that at all times or pressure in the A/C lines will get too high. So test that circuit simply by running the engine and turning on the A/C. If the fans run, that part works. Now turn the A/C off. Let the engine run until the temp gauge gets to around 200-220 degrees F. The fan should come on about this time and run until the temp drops to about 190. This cycle will continue to keep the coolant from getting too hot. If the temp gauge gets into the red area and the fan has not come on, shut down the vehicle immediately to prevent engine overheating, and then troubleshoot that portion of the fan circuit.

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1 Answer

I have 2000 3.1 mailbu


1st: check if the radiator gets hot too: if not it is the thermostat sticking closed.
If the radiator gets hot too, the fan should come one: if not, the thermoswitch or the fan or the tempp sensor is broken
If the fan comes on and it still overheats, the radiator is plugged up, this is chaeckable with an infra red thermometer...

Jan 08, 2012 | Chevrolet Chevy Cars & Trucks

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Renault laguna engine fan not coming on and engine overheats and red warning light comes on and says to stop. coolant ok but everything gets really hot. ok when doing long journey but not when stopping and...


Hi,
The problem would be the radiator cooling fan.
  • Check first the relay, interchange that relay from similar one in the fuse box in the engine compartment.
  • Check the radiator fan motor, pull down the fan motor and directly connect it to the battery.
  • Check the cooling fan thermo switch, it is located underneath/side of the radiator assembly. To check it, just get a paper clip and short the socket connector, fan should run if not the relay has a problem or the fan motor is already malfunctioning.
Hope that helps you out.
Tanks for asking FixYa!

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06 Kia Sedona overheats when ac is on. If the ac is off the van will return to normal temps. Had the compressor just replaced and v-belt. Both fans appear to be running when ac is on.


Does the engine over heat or the gauge goes to hot. Really hot. Since the A/C is on , this puts an extra load on the engine. This is why the fans come on when the A/C is turned on. This is usually low speed fan mode. High speed doesn't come on untilll 220 to 230 degrees. Most vehicles. Cars don't over heat untill the gauge gets in the red, when it starts getting close is time to worry and stop. I guess the question to you would be, What does the temp gauge read?

Jul 02, 2011 | 2002 Kia Sedona

1 Answer

2001 Chevy Malibu is getting hot before the fans come on.Had blown head gasket.Replaced that and the fan motor.Of course when the a/c is on the fans come on.Turn it off,they stay on but otherwise the car...


on my 2000 malibu 3.1, the fans come on at about 220 and go off at 210. tempurature should read about a line past the half mark. if hotter then this, check coolant level to be sure its ok. and there are no leaks in system. good-day! you might want to check the coolant temperature sensor. Also, there is a relay for the fan in the fuse box. engine is not considered over heating unless it gets to the red line portion of guage about 250 degrees. the fans work for a/c so it must be the coolant sensor thats not turning fans on when it gets hot.

Jun 28, 2011 | 2001 Chevrolet Malibu

1 Answer

Over heating leading to resevior geting full of hot , no fans


CHECK YOUR FAN RELAY WHEN YOU STOP AFTER A DRIVE THE FAN SHOULD COME ON AUTOMATICALL TO COOL DOWN THE ENGINE ;;YOUR RELAY MAY BE BAD

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you may simply have air in your radiator. Often when fluid is changed or leeks out air gets stuck inside. This happens often. You need to locate radiatior pressure relief valve. Open this while car is warm and running, but immediatly close when no air comes out just water.

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My 1986 plymouth turismo runs hot and overheats


You say it gets hot and overheats, are you losing coolant when it overheats? If it isn't boiling over, you seemed to cover everything that could be wrong, the fan is working, if it is not boiling over, just registering hot on the gauge, I wonder if it's just a temp. sending unit that's bad, indicating a overheating problem when there really isn't one. The water pump is bad when the shaft bearings go bad, and it will leak at that point. So, let me know if the car is actually boiling over (steam visible, exiting the cooling system)

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The fan might not be working because the sensor in the radiator could be bad.

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