High pitched whine, like a bearing noise
05-09-2012, 06:14 PM
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High pitched whine, like a bearing noise Car has rungreat, took it for a drive and about 5-7 miles in it starts making a high pitched whine. Thought it was a belt idler pulley, so I tried to lube them and have changed them, no dice. It's not in the drive train as it does it standing still but not at idle, just above idle at about 1500-2000 and goes away under acceleration and returns when cruising. Ac belt is off the car, so I'm thinking either water pump or alternator. The ps fluid is full, no leaks. Any help would be greatly appreciated. If the rain will stop I'll start the car without the belt on and see if it's still there.
05-09-2012, 08:19 PM
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That seams to be the culprit. I've never heard one make this noise. It's horrible. I spin it by hand and u can feel and hear where it's hanging.
05-09-2012, 08:24 PM
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Yeah that was the first thing that came to mind when i read your post. I hhad a 95 z28that did something similar to this to me. Mine gave me a warning before the squeel though that i didnt pay attention to. I noticed when i accerlerated my voltage meter went up to normal levels but at idle it would drop down to barely above red. Sure enough a few weeks after this started i got the squeel that souns alot like whhat youre describiing
05-09-2012, 08:57 PM
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yeah mine used to just die and have no output, this one is still putting out 13.8-14.4 at idle and at speed. it did sit a while so idk. oh well, my back up alternator (yes i have a backup) is at the shop getting a once over and will be in the car tomorrow.
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are you sure somebody didnt slap a procharger on and you didnt notice..
10-31-2016, 01:14 AM
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