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carol drozda Posted on Jul 15, 2018
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How do I diagnose inopt cooling fan on a 1990 Honda Accord?

1 Answer

Steve Pack

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  • Honda Master 7,128 Answers
  • Posted on Jul 15, 2018
Steve Pack
Honda Master
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Joined: Oct 15, 2013
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If the fan itself use a Digital Multi Meter check resistance of moter look online for good motor resistance. I would check the fan control relay the fan control fuse. look online for fuse diagrams and relay diagrams

Testimonial: "Thank you. I will try that. And thank you for your quick response."

  • Steve Pack
    Steve Pack Jul 15, 2018

    your welcome also check engine tep sensor and coolant temp sender if one is off the fan will run.

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5 Related Answers

apollo 13

Henry Roa

  • 56 Answers
  • Posted on Jun 25, 2008

SOURCE: cooling fan

you mean not working,but you bypass it work.you have coolling pfan swicth,or coolling fan relay,test it with atest light,the swicth just omhs it

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Anonymous

  • 4 Answers
  • Posted on Dec 09, 2008

SOURCE: how do i reset and clear codes for 1990 honda accord

unhook battery cable for about 20 mins then re-connect it ... codes should be cleared

jmassengill

Johnny Massengill

  • 345 Answers
  • Posted on Jan 02, 2009

SOURCE: I HAVE A 91 HONDA ACCORD WHICH HAS TWO ELEC FANS

Both fans cool the motor. If you have the air conditioner on both fans will run because the cars cooling system will have to disapate more heat. If you have the air conditioner off only one fan will run because the heat load on the engine isn't as great.

Anonymous

  • 17 Answers
  • Posted on Jan 08, 2009

SOURCE: 1990 Honda accord horn problem

Horn fuse should be located in the fuse box under the dash on drivers side kick panel. If fuse is good try replacing the horn itself, it might be bad due to the age of the car. They are located behind the front bumper on the left and right side.

Anonymous

  • 81 Answers
  • Posted on Mar 28, 2009

SOURCE: no high speed cooling fans 1996 honda accord

High speed fans only come one for high temp or high a/c pressure. Will be hard to tell if they work on high.

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How you know if you need a cooling fan relay

If your cooling fan is running all the time or if the cooling fan does not turn on when engine temperature is at normal or higher than normal temperature. It is possible in cold weather the fan may not turn on often.
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1990 honda accord ex overheating fans not turning on, tested sensor conectors with jumper and fans come on.starts overheating at stoplights but temperature drops to normal while driving. have been told...

You will have to replace the fan sensor. If the fans are not working then the temperature will rise when stopped and cool down when running because of the air coming through he radiator.
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1991 honda accord lx cooling fan

Some vehicles have sensors that can control the electric fan with the ignition off to keep the heat buildup that naturally occurs right after turning off the engine. This can prevent hard starting that can happen with a hot engine. If it is doing this an abnormal amount, the sensor that is operable with the ignition off may be failing. Before turning off the ignition, check to see if the engine temperature is pushing the 'red zone;' if it is, then the fan operation may be normal but your engine may be running hot.
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Cooling fan continues to run too long with engine off.

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At first I would have said it was your relay. They are known to get shorts and stay on. But you had that and the sensor changed. I would have to say it's time to trace teh wiring and make sure the wires aren't rubbing somewhere. It's a pain I know. I would start at the fan and work your way back to the relay. Might want to tap on the relay a little to make sure the new one didn't get shorted out by bad wireing somewhere else.
There is also a “cooling fan timer” located inside the vehicle in the driver sideof the dash. This is going to be much harder to diagnose….and I am notsure how expensive a guess that will be to replace. If the relay doesnot solve the problem, I would call your local Honda dealerparts department and tell them your problem and see what they say. Theyshould know which parts fail the most and what they sell the most of.
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