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Alright, My 86 supra is making that belt slipping noise when I first crank it. Then it keeps sqweeking untill i drive a little bit and warm the car up. Well I wouldn't even had bothered posting this if i wasn't stumped. I tighted the belt tensioner thats on the compressor pully. It seemed to do a little good but not much. I'm not sure what is making the noise. What else can sqweek in that area? Is there anything else i can tighten?
 
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I know when I changed my alternator, the bracket to mount it was a little wider than the part on the block, so I had to use a washer to keep it secure. It comes loose still and squeals, only after hard driving(i.e. racing). But if I tighten it, then not race it never squeals.
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Mideel said:
Alright, My 86 supra is making that belt slipping noise when I first crank it. Then it keeps sqweeking untill i drive a little bit and warm the car up. Well I wouldn't even had bothered posting this if i wasn't stumped. I tighted the belt tensioner thats on the compressor pully. It seemed to do a little good but not much. I'm not sure what is making the noise. What else can sqweek in that area? Is there anything else i can tighten?
Get a can of belt dressing and spray 'em.

...if they've been squeaking for too long you'll need to replace.

..and don't tighten too much or you'll cause problems.

PS Pump is your likely problem area, btw.
 
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Mideel said:
Alright, My 86 supra is making that belt slipping noise when I first crank it. Then it keeps sqweeking untill i drive a little bit and warm the car up. Well I wouldn't even had bothered posting this if i wasn't stumped. I tighted the belt tensioner thats on the compressor pully. It seemed to do a little good but not much. I'm not sure what is making the noise. What else can sqweek in that area? Is there anything else i can tighten?
Mine had the same problem for a while. It was the A/C, so I just pulled it. Pulling the A/C also gives you a small boost in HP.
 
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Thanks for the ideas. I haven't had a lot of time to look into it in depth, but i did spray some belt dressing on the belts and the noise occured less frequently for about a week. now its back again at full force. My dad is saying it may be a bearing of some kind in one of the pulleys. I'll look more into it this weekend.
 

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Mideel said:
Thanks for the ideas. I haven't had a lot of time to look into it in depth, but i did spray some belt dressing on the belts and the noise occured less frequently for about a week. now its back again at full force. My dad is saying it may be a bearing of some kind in one of the pulleys. I'll look more into it this weekend.
Unlikely that a squeaking noise is a bearing...

If it were a bearing then spraying belt dressing wouldn't have caused the squeak to decrease at all, right?

In other words, I think it's time that you get some new belts and install then, and tension them correctly.

The problem will go away. After your belts slip for a while they're damaged and need to be replaced.
 
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