drcomanche Posted January 19, 2012 Share Posted January 19, 2012 It just started to do this yesterday, but whenever I let off the gas I can hear a prominent squeal from the engine bay. As soon as I hit the gas again, it stops immediately. I played around with it and just tapped the gas a few times in a row, and it immediately starts and stops as I hit the gas. It also doesnt do it when I'm under 25 or 30mph. Any ideas? Link to comment Share on other sites More sharing options...
Harley Posted January 19, 2012 Share Posted January 19, 2012 belt/belts...... Link to comment Share on other sites More sharing options...
Harley Posted January 19, 2012 Share Posted January 19, 2012 Forgot to mention possible alternator bearing, pulleys etc. Basically anything that spins Link to comment Share on other sites More sharing options...
drcomanche Posted January 19, 2012 Author Share Posted January 19, 2012 You think the belts might be too tight? I did just finish up replacing the header, so i had to remove the power steering pump and the belt. Link to comment Share on other sites More sharing options...
Harley Posted January 19, 2012 Share Posted January 19, 2012 or not tight enough. IMO get some belt dressing, spray it on there with it running and see if the sqeak goes away. Link to comment Share on other sites More sharing options...
jimoshel Posted January 19, 2012 Share Posted January 19, 2012 Why don't you try pinning the problem down first before doing anything else. Use the old hose, or if you have one, stethoscope and locate where the noise is coming from. I would suspect alternator or water pump first. Link to comment Share on other sites More sharing options...
drcomanche Posted January 20, 2012 Author Share Posted January 20, 2012 Problem with that is, as I said before, it only happens when I'm driving. And even then, it only happens over 25 to 30 mph. I'm all for the stethoscope method, but I feel like that is a bit too extreme while moving. :rotf: Link to comment Share on other sites More sharing options...
Backroads Posted January 20, 2012 Share Posted January 20, 2012 If you just moved accessories around and changed the belt i would start there. can't hurt anything by giving the belt a slight adjustment either wayto see whatthe reaction is. I would guess it needs to be a tad tighter. Tried putting your defrost or acon if you have it. The ac clutch kicking in will bring out a loose belt squeal right away. Link to comment Share on other sites More sharing options...
jimoshel Posted January 20, 2012 Share Posted January 20, 2012 It only does it while driving? It doesn't do it sitting parked and reving the engine? Holding the engine at a stedy speed and turning the AC on and off should help pin down if it's a loose belt. Link to comment Share on other sites More sharing options...
drcomanche Posted February 9, 2012 Author Share Posted February 9, 2012 a couple of new symptoms on this, the sound NEVER gets quieter as the speed goes down, and I found that when it happens is directly linked to how many rpms i have. if its over 2000, it squeals. But again, only when I'm driving and let off the gas. Any ideas? Link to comment Share on other sites More sharing options...
cruiser54 Posted February 9, 2012 Share Posted February 9, 2012 Vacuum leak at the intake manifold under high vacuum as in decelerating? Link to comment Share on other sites More sharing options...
drcomanche Posted February 10, 2012 Author Share Posted February 10, 2012 Any idea where that may be? I just replaced the gasket, so I don't think(or rather I hope) it's not that. Link to comment Share on other sites More sharing options...
Backroads Posted February 10, 2012 Share Posted February 10, 2012 May e check over your bolts on the manifold and make sure theyre all snug. Ive had leaks from the runners closest to the radiator. Link to comment Share on other sites More sharing options...
cruiser54 Posted February 10, 2012 Share Posted February 10, 2012 Any idea where that may be? I just replaced the gasket, so I don't think(or rather I hope) it's not that. Spray around the intake where it meets the head with a liquid. Throttle body cleaner works well. You'll know when you hit a vacuum leak. Link to comment Share on other sites More sharing options...
drcomanche Posted February 26, 2012 Author Share Posted February 26, 2012 May e check over your bolts on the manifold and make sure theyre all snug. Ive had leaks from the runners closest to the radiator. You, sir, were absolutely correct. :bowdown: Went back and checked all my bolts and, wow, did they loosen up after I did that repair. It was easy to turn the lot of them. It also probably didn't help that my intake tube from the box the the manifold had slipped off a bit. Link to comment Share on other sites More sharing options...
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