ruggerheist Posted August 10, 2011 Share Posted August 10, 2011 Been having a faint rattle come during boost, no matter how high. Even at 1psi there is a rattle. seemed to pop up after i started having another rattle in my AC if i idle for a while w AC on, when it cycles a rattle/whirring sound eminates from dash but cant be heard outside w or w/o hood open. is it possible the 2 are correlated? any thoughts on what could be loose/cause rattle? more concerned with boost rattle over AC noise Link to comment Share on other sites More sharing options...
ragman Posted August 10, 2011 Share Posted August 10, 2011 not trying to be a downer or anything, but it might be the start of a rod knocking. Hopefully, it is just a heat shield or something simple though Link to comment Share on other sites More sharing options...
ruggerheist Posted August 11, 2011 Author Share Posted August 11, 2011 not rod knock, had that before and know what that sounds like. i could replicate that while at idle and gently revving. this only happens under boost under load. i feel like something somewhere is loose, but before going crazy and taking things out and re-tightening just want to see if anyone else has had this and can offer up a starting place to look Link to comment Share on other sites More sharing options...
Scotty Posted August 11, 2011 Share Posted August 11, 2011 How's your boost? I had a strange rattle, turned out the wastegate shifted. Link to comment Share on other sites More sharing options...
ruggerheist Posted August 11, 2011 Author Share Posted August 11, 2011 hit and hold boost fine. no stutter, no excessive lag. now that im aware of the noise, its more of an annoyance since im always listening for it now. im going to check the heatshield this weekend and make sure thats all tightened and also look at the wastegate, make sure thats kosher. any other insight in the meantime? Link to comment Share on other sites More sharing options...
SSpeed Posted August 11, 2011 Share Posted August 11, 2011 The heatshield on the uppipe can also break the welds and rattle... You should be able to reach in there (when it's cold) and grab the heatshield and not be able to move it... Link to comment Share on other sites More sharing options...
ruggerheist Posted August 11, 2011 Author Share Posted August 11, 2011 My uppipe is tomei and wrapped. But now that I think about it i wonder if one of the metal ties broke loose and vibrating off something. Thank you sir Link to comment Share on other sites More sharing options...
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