Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 924/944/968 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: Aug 2019
Posts: 26
Weird idle rev and squealing

I recently rebuilt my steering rack and got a new ac compressor and started the car and heard some belt squealing. I took off the power steering belt and it squeals a little at about 1,000 rpm but stops after but squeaks more with the power steering belt. I also have this weird idle rev that dips up and down but not by much

https://youtu.be/eWDE0BVQOJA
Old 10-05-2019, 10:49 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
Join Date: Oct 2006
Location: va
Posts: 2,179
Garage
Try this test: turn on all accessories and see if the belt squeals or slips at idle or when revved up:

All accessories include the AC, blower, rear defogger, lights, high beams, fog lights, etc.

Since the alternator and the AC compressor use the same belt it might be a loose belt if there is squealing with a full load on the alternator.

If there is a squealing belt it needs to be tightened. (procedure to be provided)
Old 10-05-2019, 01:11 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
Join Date: Aug 2019
Posts: 26
Quote:
Originally Posted by djnolan View Post
Try this test: turn on all accessories and see if the belt squeals or slips at idle or when revved up:

All accessories include the AC, blower, rear defogger, lights, high beams, fog lights, etc.

Since the alternator and the AC compressor use the same belt it might be a loose belt if there is squealing with a full load on the alternator.

If there is a squealing belt it needs to be tightened. (procedure to be provided)
I cant remember how tight its supposed to be (like if you pull the belt how far down it goes) I think it's like 3/4 of an inch? But it squealed before and I tried tightening it but figured out it was the compressor I got because it screeched super loud after i put freon in so i had it refunded and got a new one
Old 10-05-2019, 06:26 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
Join Date: Oct 2006
Location: va
Posts: 2,179
Garage
To check the belt use a twist test. I think it should only twist about 1/4 turn on the long leg. You need to loosen the compressor mounting bolts before tightening the tensioner turnbuckle. The tension can slip if all of the brackets on the AC compressor are not re-tightened however use caution as the compressor ears have been know to break off if too much force is used or it gets cocked.
Old 10-06-2019, 05:01 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered User
 
Join Date: Aug 2019
Posts: 26
Quote:
Originally Posted by djnolan View Post
To check the belt use a twist test. I think it should only twist about 1/4 turn on the long leg. You need to loosen the compressor mounting bolts before tightening the tensioner turnbuckle. The tension can slip if all of the brackets on the AC compressor are not re-tightened however use caution as the compressor ears have been know to break off if too much force is used or it gets cocked.
Figured out it's the alternator, which i got a remanufactured one recently and I dont know if it's the alternator itself that I can return or if I need a new blade thing that goes on it
Old 10-09-2019, 01:33 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 12:37 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.