Car makes squeaking sound when turned off?
11-09-2008, 05:36 PM
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Car makes squeaking sound when turned off? After I turn the car off, there is a squeaking sound coming from under the hood. It sounds like something is slowing down. I can hear it as if it's in rotation and squeaks when it hits a certain point. If it's the cooling fans, how do I lube the bearings in them or not the squeaking?
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11-11-2008, 03:48 PM
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how could it be a pulley if the engine is turned off...and it still squeaks?
i actually have the same thing....fairly recent
i've popped the hood, then shut it off....its 99.9% sure its the fans...since nothing else is spinning.
and it takes about 10sec for it to stop.
gonna look around for some replacement fan motors.
11-11-2008, 07:25 PM
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It is the cooling fan, Mine does it. I dont have ac hooked up so there is no way it could be related, not to mention it does it with the engine completely stoped. I have not seen a way to "lube" them but have seen replacements. good luck
11-11-2008, 07:55 PM
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Yea I figured that, but there is a short run of the compressor when the engine shuts down.
11-12-2008, 08:19 AM
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It does hum too. I have an direct ipod connection to my factory cd player that I thought was humming. It's definitely the fans because it goes away when they turn off. If I shut the car off while they are running it squeaks until they stop. It kind of sounds a cd player without the noise cancelling box hooked to it.
01-18-2021, 08:06 PM
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After I turn the car off, there is a squeaking sound coming from under the hood. It sounds like something is slowing down. I can hear it as if it's in rotation and squeaks when it hits a certain point. If it's the cooling fans, how do I lube the bearings in them or not the squeaking?
01-18-2021, 08:27 PM
#16
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Could be the A/C clutch decoupling on shutoff
01-18-2021, 09:40 PM
#17
I had an alternator once, some decades ago, where one of the pieces of iron in the rotor came loose. It was a sort of ring kind of thing somewhere up in there. It did EXACTLY this same thing. I would shut the engine down, and after everything stopped, I'd hear ... this weird RRRRREEEEEEAAAAAAAAAAAAAAKKKKKKKKK noise. Drove me NUCKING FUTS. I finally had my assistant start the car up, rev the motor, shut it off, and immediately put it in gear. (stick shift car) My handy-dandy car noise finder (piece of heater hose stuck in my ear) narrowed it down to the alt, and a quick disassembly and some manual manipulation found the culprit.
Don't know A DAMN THING about Mustang or Coyote. Foreign language. No idea whether anything I know about anything applies to any such thing. This is a LSx message board, not general tech Q&A where people revive 12-yr-old threads.
Don't know A DAMN THING about Mustang or Coyote. Foreign language. No idea whether anything I know about anything applies to any such thing. This is a LSx message board, not general tech Q&A where people revive 12-yr-old threads.
01-27-2021, 08:16 AM
#18
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02-09-2021, 09:31 AM
#19
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Temporary Generator Hello,
With out hearing the noise or where it is coming from?------ Use a stethoscope on the fan motor to check that.
Temporary remove the water pump belt and check for the noise.
Here is another possibility, when the engine is shut off and the electric fan and still spinning it can become a generator feeding current back into the wiring causing noise somewhere else.
Hope this helps
With out hearing the noise or where it is coming from?------ Use a stethoscope on the fan motor to check that.
Temporary remove the water pump belt and check for the noise.
Here is another possibility, when the engine is shut off and the electric fan and still spinning it can become a generator feeding current back into the wiring causing noise somewhere else.
Hope this helps
