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  #1  
Old 02-06-2009, 02:31 AM
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Default Whining noise from underneath the car

When my car is idle at stop lights(but engine is running) I can hear a loud whinning noise. It's not coming from the engine, it sounds like it is coming from the bottom of the car right before the engine compartment. It stops whining when I give it gas, so only when it's idle. Any ideas what this could be?
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Old 02-06-2009, 11:10 AM
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bad U-joint?
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Old 02-06-2009, 03:00 PM
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Near the fuel pump?
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Old 02-06-2009, 04:14 PM
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Naw, I beleive the fuel pump is in the back. This is coming more from the area where the u joint is...maybe more towards the front a little. I had the rubber ring replaced that holds the drive shaft because the old one was bad. I thought that was the problem but the noise didn't go away, instead it seems a little worse now.
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Old 02-06-2009, 04:57 PM
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i had a u-joint go bad on my wagon that sounded the same way....
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Old 02-06-2009, 05:08 PM
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I thought the car was stopped hence not the u-joint. Is it an auto?
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Old 02-06-2009, 05:17 PM
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Yes, you are right.... this happens when the car is idle. For instance, at a red light the sound will be there. Then when I start driving off the sound will go away. Here's a better break down of the symptoms:

1) Sound will be there but will disappear instantly if I place the car in park.
2) Sound will not start when I first/initially place it in drive
3) Sound will be there after driving a little and stopped to a red light(car being idle)
4) Sound will disappear instantly after I start driving again or if I give the car gas
5) Whining is very loud and can be heard from inside the car.
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Old 02-06-2009, 05:41 PM
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Hmm...not sure what the flex joint does. I have to work 7 days straight before I get a day off. Will I be hurting anything(or the transmission) driving it like this? If the u joint breaks will it cause me to wreck? Is this something that is hard to see if it bad? Because I am surprised the mechanic didn't notice when he replaced the rubber ring that holds the drive shaft.

Last edited by dman777; 02-06-2009 at 05:58 PM.
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Old 02-07-2009, 01:02 PM
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Maybe someone can explain how the u-joint could be making noise when the car (and the wheels, and the drive line) is not moving.

The noise is coming from the transmission. Maybe thats the problem?
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Old 02-08-2009, 01:51 AM
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dman777....

I have an '88 245 (auto) that makes the same noise. Sounds like a jet taxiing down a runway. I suspect the u-joint or a coupling in the trans? Trans shifts fine and car runs great otherwise.

After I come to a complete stop, sometimes the sound "spools down" to a lower tone before stopping altogether. It does sound like something is rotating freely, but I'm unsure as to what it is.

I'll post back if I narrow it down further....

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Old 02-08-2009, 01:51 AM
 
 
 
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1998, 2005, 240, camaro, cavalier, dl, engine, idle, loud, making, noise, s40, sound, volvo, whine, whining


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