Question about 1991 Oldsmobile Cutlass Ciera

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The radiator fan does not come on causing the engine to overheat

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  • Expert
  • 34 Answers

Unplug the fan jump the conector with twelve volts if it comes on you need too do some extensive testing starting with the fuse and relay try turning on the a/c. the ac and coolant temp sensor control the fan if it douesnt come on repalce the fan chances are it will and you will probly need a auto tech too find the fault in that circuit if it is not the fuse go there first then the relay you probly dont know how to check them heres a quick trick swop it with onother one you knows works from another component see if it come on

Posted on May 02, 2010

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  • Oldsmobile Master
  • 6,826 Answers

Change the thermostat,and fill the cooling system full,check the fuse for the cooling fan,and the relay,and the coolant sensor can cause this problem.If the thermostat is staying closed the coolant sensor will not turn the fan on.

Posted on May 02, 2010

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Posted on Jan 02, 2017

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SOURCE: car overheats. have replaced radiator,thermostat.water

Question that I pose is:
Is the car overheating or are you assuming it is as the gauge is telling you that it is?
There are two cheap and simple things that are not mentioned in this post. There is an Engine coolant temp sensor which in all of their innane wisdom Saturn built with a plastic tip and we all know plastic melts fairly easily. This part is a simple fix as it needs a 13mm deep socket and that is it for tools to replace it and it is $10 - $15 for a new on with a copper tip. There is also an Engine coolant temp switch which sends information to the PCM to tell the gauge what the reading should be. Aslo $10 - $15 and a 13MM deep socket to replace. These are common issues with the S Series Saturns. I do however recomend that if you are going to replace them yourself that you empty the radiator of coolant as the sensor and switch are directly in the engine block coolant flow and will give you a nice little shower if you do not at least jack the drivers side up before replacing them.

Posted on Dec 02, 2008

  • 2920 Answers

SOURCE: cooling fans not working on 1995 camaro z28

you have a burnt fan relay...if it were my car i ould run a jumper to the fuse panel so that when you turn the key on the fan will also come on and run.its not hard to do and it will stop the car from overheating

Posted on Jan 24, 2009

  • 335 Answers

SOURCE: car overheat

The rad fan is required to keep your engine at a normal operating temp. When you are going at hiway speeds the fan is not needed. When you stop then the fan has to operate to keep the engine cool.If the fan is not operating, it could be the fuse or fan relay or temp sensor or computer This problem should be checked by someone who is a professional..

Posted on May 09, 2009

frcs68
  • 1605 Answers

SOURCE: truck over heats instantly

backwards themostat, or water pump.

Posted on May 21, 2009

  • 6 Answers

SOURCE: radiator fan not working that cause the car to

have you tried checking the fan relay, of the cooling fan sensor. if you have a tester you can un-plug fan and check if power going to fan sensor. good luck

Posted on Mar 17, 2010

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2 Answers

What cause of overheat from engine


an engine will overheat if the rad cooling fan is not working, this will have to be check to see if its the fan motor, the fan relay. low coolant level, top up coolant check for leaks. could be head gasket problem, bad water pump(impeller worn).

Aug 08, 2014 | Daihatsu Charade Cars & Trucks

1 Answer

Check engine comes in when engine starts to overheat, which it does in slow traffic. Radiator, fans, water pump are OK.


Did you check/replace the thermostat? Another possible cause may be hair line cracks in the head(s).

May 10, 2014 | 2006 Mitsubishi Lancer

1 Answer

Car is overheating


Hello,
when the car overheats, is there still water in the radiator?
If there is water in the radiator and the car overheats, then it means there might be some dirt or blockage in the radiator or condenser.
When the car is on the motion, air passes through the front and assists the fan to cool the engine. there are situation whereby air doesn't have free flow because of blockage in the radiator and condenser. Dust and debris can cause blockage. If this be the case, have your radiator washed thoroughly and cleaned.
If there is no water in the radiator when the car overheats, then there is a probably a leakage from the water pump. Or maybe your fan isn't blowing properly. The fan might be blowing weak air.
The above are what could cause your engine to over heat.
So start the check from the radiator. Poor water into the radiator, wait for some minutes, look under the car and observe if water is going to leak. If there is a leak, it might be from the water pump or a leaking hose.
If water from radiator has no leak, have your radiator washed and clean the condenser has they might block air that is suppose to cool the engine.
Also, make sure your fan is blowing properly or well enough to cool the engine.
Make sure you have the above checked thoroughly as they are the major causes of problems like this.
This overheating problem could lead to a burnt gasket and this can dry the engine oil which will eventually knock the engine. So have this problem fixed to prevent further damage that will cost you more money.
Regards.

Sep 12, 2011 | 1993 Ford Tempo

1 Answer

Car is overheating


Hello,
when the car overheats, is there still water in the radiator?
If there is water in the radiator and the car overheats, then it means there might be some dirt or blockage in the radiator or condenser.
When the car is on the motion, air passes through the front and assists the fan to cool the engine. there are situation whereby air doesn't have free flow because of blockage in the radiator and condenser. Dust and debris can cause blockage. If this be the case, have your radiator washed thoroughly and cleaned.
If there is no water in the radiator when the car overheats, then there is a probably a leakage from the water pump. Or maybe your fan isn't blowing properly. The fan might be blowing weak air.
The above are what could cause your engine to over heat.
So start the check from the radiator. Poor water into the radiator, wait for some minutes, look under the car and observe if water is going to leak. If there is a leak, it might be from the water pump or a leaking hose.
If water from radiator has no leak, have your radiator washed and clean the condenser has they might block air that is suppose to cool the engine.
Also, make sure your fan is blowing properly or well enough to cool the engine.
Make sure you have the above checked thoroughly as they are the major causes of problems like this.
This overheating problem could lead to a burnt gasket and this can dry the engine oil which will eventually knock the engine. So have this problem fixed to prevent further damage that will cost you more money.
Regards.

Aug 11, 2011 | 1998 Chevrolet Malibu

2 Answers

If the car overheats is it cause the alternater?


No. its either radiator , engine cooling fan, coolant leaks, thremostat, or worst headgasket. Acura are popular for radiator being broken at the seam of the radiator.So check for leaks, now if the cooling fan doesnt come on the yes it will overheat, so the operation has to be monitored a engine cannot go pass 215 F there it can be damage, now the thermostat need to open at a cerain degree . or it will cause overheating and not allow cool fluid to enter the engine area. and the radiator cap must be able to sustain a certain pressure in order to keep the car from overheat, water boils at 110 F so a radiator cap rated for your engine must be specification for every one pound of pressure it increase the boiling point 10 degrees. 210 is fuel control you should not exceed this temperature. radiator are popular for getting plugged internally.

Apr 30, 2011 | 1994 Acura Integra

1 Answer

Thermo valve broken, does this cause over heating?


if you mean "thermostat" valve .. then that can fail either open or closed . if it fails open then the engine will not reach normal operating temperatures .. if it fails closed then yes the engine will overheat .. another common failure is the radiator fan .. it only runs when the car is not moving .. as long as the car is moving then cooling air is available so the fan is not needed ... so if your car does not overheat when driven but overheats when stopped or idling then suspect the radiator fan or thermal switch (mounted on the radiator) .. that switch turns on the fan when the radiator gets so hot ... you can just listen for the fan when hot .. you should hear it .. .. if your car gets too hot while driving then suspect a bad thermostat or clogged radiator .. sometimes a bad water pump (broken implellers) will cause the trouble ..

Jun 10, 2010 | 1990 Acura Legend

1 Answer

Engine overheats when idling. Top of radiator exploded! Now I must replace radiator. Did bad thermostat cause this, or was the culprit a bad radiator fan relay?


It could be either.Replace the thermostat anyway for good measure (it's cheap).And have the fan and relay tested.I't a very easy quick test that any honest,capable machanic can do

Oct 05, 2009 | 2003 Jeep Grand Cherokee

1 Answer

Overheating


  1. There are many different reasons that can cause an engine overheat, but they all have in common three aspects. The three aspects which all engine overheat factors have in common are that they cause that the heating system can not get rid of heat, they cause a loss of coolant or they directly cause too much heat in the engine.
  2. One first problem which might be the cause of an engine overheat is a problem with the radiator cap and the pressure it holds. If the radiator cap does not hold pressure correctly then coolant could boil and therefore the engine would overheat. Another reason might be caused by thermostat failures; it is recommendable that you check it.
  3. The car engine might also overheat due to coolant leaks such as those from the radiator, the hoses, the water pump, the freeze plugs or any others. Also, problems in the water pump could be the cause and therefore you should check it and replace it in case it is needed.
  4. Some other reasons by which the car engine could overheat are problems in the exhaust system which you can discover by checking vacuum readings, pipes and converter. Besides, you should also make sure that the radiator hose has not collapsed and the ignition timing is working properly.
  5. You should also check the electric cooling fan by making sure that the fan motor, the relay and temperature are correct or otherwise it could cause the engine to overheat. Besides this, you should also check the radiator in case there are any debris in it as well as you should check its hose in case it has collapsed.
  6. It is also recommendable that you check the antifreeze concentration which should be 50/50 in order to be correct, otherwise it could cause the car engine to overheat. If you do not find why your engine does overheat, you should ask a mechanic or an expert for advice. You should not try to fix this if you do not have the proper tools and general car knowledge necessary for it.

May 01, 2009 | 1993 Chevrolet Camaro

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