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this fan noise may be the coolant fan doing the job of cooling the radiator when there is no air flow through the radiator as in standing in a line or at lights. IN a drive through line you would have the window down and so the noise came to your attention when the fan cut in. However have it checked out by an accredited repair shop to put your mind at rest.
It's most likely a bad left front wheel bearing or possible tire noise, switch the left front tire with the rear tire and see if the noise changes. If not have the wheel bearing checked, it may need to be replaced.
i have a1994 cutlass ciera S, 3.1 motor, it has 5 relays, from the radiator side to the right fender 1) fuel pump, 2) A/C, 3)blower motor,4) fan#1, 5) fan#2, fan #1&2 refer to the radiator fans,#1 fan is the puller fan (motor side) #2 is the pusher fan,( in front of the radiator) ,hope this helps.
Fan relay is located under pass headlight. Remove light assembly, use 2 1/2 " hole saw to drill hole in plastic housing ,3"from back wall, 3'' from left side.This will put you right over relay. Unscrew two bolts,replace. Relay was $40.... dealer wanted$350 to remove front bumper to replace it.
1. Could be a caught foreign object between A/C (air conditioning) fan and cooling radiator, producing this loud noise. 2. Could be a damaged fan blade, mowing the cooling radiator. 3. Could be a loud noise comming from the fan's electrical motor. 4. Could be a broken off fin (small wing) of the cooling radiator, striking the A/C fan, producing this loud noise.
Electric cooling fan bearing failed and the cooling fan needs to be replaced. Start with inspecting the cooling fan behind the radiator and determine if that is where the noise is coming from. Replace any worn or damaged parts.
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Wheel bearing noise can be identified as a growl type noise at highway speeds. Turn slightly left and right and note if the tone changes, this would indicate a failing bearing.
the a/c when running creates a lot of extra heat and needs second fan, if second fan is not working right this will cause overheating, if fan is creating a load noise it is likely bearing is bad and will not spin as fast as it should not cooling. also check that fan it not hitting anything if you describe loud noise i can give better idea
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