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Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine> Whining sound like a super charged? Cause?
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Topic Review (Newest First)
12-27-2005 12:18 PM
curtis73 My guess... pull the inspection cover off the TC. I'll bet you'll find scratches from the flexplate. Leave it off = noise gone.
12-27-2005 10:37 AM
milner my bet would be a bad diode in the alternator, they sound like a pete jackson gear drive.
12-27-2005 09:01 AM
StevenC Its kind of hard to get under the car when its running. But the noise comes on as soon as its started.
12-27-2005 12:28 AM
97Z28 depends where the sound is coming from. start the engine and let it idle till the noise comes in, then go through and check to see where the sound is coming from with a mechanics stethiscope.... or... whatever you have... you should be able to tell where its coming from. and if it only happens when your driving, i'd check the tranny, and also check to see if the rear end has enough fluid in it...
12-27-2005 12:24 AM
StevenC Can a bad bearing cause this?
12-26-2005 04:52 PM
IanRiordan If it's pre efi, and a t350 would inicate that, try the distributor. Dry points or a stuck weight (points or hei) touching inside will cause it. At least if you unbutton the convertor you'll get closer.
12-26-2005 04:33 PM
Infomaniac The carb base gasket will squeel real loud when it gets a leak.
12-26-2005 04:06 PM
97Z28 check the tranny fluid, see what color it is, you might be low or just need the fluid and filter changed.
12-26-2005 02:45 PM
StevenC Its a two wheel drive.

I dont think its alternator. I cant really find out for sure until tommarow, just looking for suggestions.
12-26-2005 01:59 PM
firestone I had almost the exact same thing happen to me except that you could hear it at idle sometimes. It ended up that my alternator bearings went out.

12-26-2005 01:47 PM
Warrant Is your truck 4 wheel drive? I had a similar problem, took us awhile to find where the noise was coming from. It turned out that the transfer case took a dump...
12-26-2005 01:45 PM
97Z28 exactly what i was going to say... the tranny...
12-26-2005 01:40 PM
StevenC TH350.. Thats what I think aswell. I will find out when i pull the converter bolts.
12-26-2005 11:10 AM
Originally Posted by Tim240Z
What tranny do you have? Sounds like the tranny just started going south.....pump drive or bearings...if it is a 4L60, then my money is on that!
Same thing here on my chevy.....Replaced the trans and the noise was gone. Never tore in to it find the culprit. Same torque convertor though.
12-26-2005 10:52 AM
Tim240Z What tranny do you have? Sounds like the tranny just started going south.....pump drive or bearings...if it is a 4L60, then my money is on that!
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