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Strange noise after shut down...

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Old 03-26-03, 10:14 AM
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Strange noise after shut down...

I've got a noise that reoccurs constantly after shutting my '91 vert off. It's a mechanical humming sound, almost like the fuel pump or something. It lasts 4-5 seconds and stops. After a moment it does it again, then repeats the process numerous times, I haven't hung around long enough to see when or if it finally stops altogether. Any ideas on what it is? Is this normal or should I start to worry?
Old 03-26-03, 11:23 AM
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Hey there!!!

Is the sound coming from the front or the back of the car?
Old 03-26-03, 11:48 AM
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Originally posted by Mills
I've got a noise that reoccurs constantly after shutting my '91 vert off. It's a mechanical humming sound, almost like the fuel pump or something. It lasts 4-5 seconds and stops. After a moment it does it again, then repeats the process numerous times, I haven't hung around long enough to see when or if it finally stops altogether. Any ideas on what it is? Is this normal or should I start to worry?
How about the next time you shut it off, lift the hood and check to see if the fan comes on.

Last edited by StarionX; 03-26-03 at 11:51 AM.
Old 03-26-03, 01:19 PM
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Is it you antenna lowering?
Old 03-26-03, 01:25 PM
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Ive got that strange noise too. But its not the fuel pump. I can get it to go away by opening the fuel tank. DOnt know what it is though.

Jarrett
Old 03-26-03, 02:05 PM
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Very funny, StarionX-I think I would know if that was happening. The noise is coming from the rear of the car, and a Mazda mechanic couldn't help me either...
Old 03-26-03, 04:17 PM
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Put your ear up to the fuel pump and check to see if that is the cause. Could be a sticky fuel pump relay, or malfunctioning key switch.
Old 03-27-03, 03:02 AM
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Do you have a power antenna? If so, does it work?
Old 03-27-03, 02:38 PM
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My power antenna works perfectly, but I don't listen to the radio, I always have the CD player going...there aren't many good stations that I can reach where I live. Next time I drive it I'll get on the ground and listen to the gas tank to see if it's coming from there...
Old 03-27-03, 02:51 PM
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If opening the gas cap solves the problem, wouldn't that indicate a problem with the charcoal canister?
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