mitsustar86 Posted May 29, 2013 Report Share Posted May 29, 2013 I have had a screaching noise so I replaced my bad 12a with a new never used s16g and it still screaches could it be a boost leak or something? Any help would be wonderful. Thanks. Link to comment Share on other sites More sharing options...
tux Posted May 29, 2013 Report Share Posted May 29, 2013 have you checked drive belts ? Link to comment Share on other sites More sharing options...
aknorthstar Posted May 29, 2013 Report Share Posted May 29, 2013 check the exhaust manifold bolts. I had one loose and it did the same thing. Link to comment Share on other sites More sharing options...
jszucs Posted May 29, 2013 Report Share Posted May 29, 2013 (edited) I vote it's a bearing in one of the pullys up front. OP help us out, poke your head under there and figure out where it's comming from. Edited May 29, 2013 by jszucs Link to comment Share on other sites More sharing options...
mitsustar86 Posted May 29, 2013 Author Report Share Posted May 29, 2013 It only does it when I'm barley on the gas. And from inside the car it sounds like its coming from the driver side. Link to comment Share on other sites More sharing options...
jszucs Posted May 29, 2013 Report Share Posted May 29, 2013 What do you have for fluid in your power stearing? Have an auto or manual? Checked AC and alternators and pullys? Link to comment Share on other sites More sharing options...
Shelby Posted May 29, 2013 Report Share Posted May 29, 2013 exh leak ahead of the turbo , base gasket or exh manifold I have heard one with a bad compressor housing o-ring scream loudly Link to comment Share on other sites More sharing options...
Dan87quest Posted May 29, 2013 Report Share Posted May 29, 2013 Exhaust manifold gasket is my bet. Check for a broken or missing stud at #4 cylinder Link to comment Share on other sites More sharing options...
JAinsworth Posted May 30, 2013 Report Share Posted May 30, 2013 I'm with Shelby on this one. Close the vent on the passenger's side, does the sound get quieter? If so, it is coming from the turbo like Shelby said. Jimmy Link to comment Share on other sites More sharing options...
Shelby Posted May 30, 2013 Report Share Posted May 30, 2013 I mentioned those places for potential leak spots not meaning they are your problem , a length of clear plastic hose held to your ear and one end moved around the exh mani and turbo can normaly locate the leak Link to comment Share on other sites More sharing options...
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