charlton Posted May 20, 2013 Share Posted May 20, 2013 My Supra is making a horrible squeal that is driving me crazy, I have just had the aux belt changed in the last few weeks so I know it is not that. The pulleys look ok to me and are not wobbling from what I can tell, when I accelerate the noise gets louder until the engine drowns it out - at idle it barely makes a noise. From what I have searched on here it seems like it is a dodgy crank pulley. I've attached a video if anyone could diagnose or suggest what to check as I need to get it fixed before it explodes or I do!! http://youtu.be/34kPNZOWdBU Quote Link to comment Share on other sites More sharing options...
Dnk Posted May 20, 2013 Share Posted May 20, 2013 Put a line of tippex across the face of the crank pulley to see if its separating You could also take the aux belt off and see if the noise stops and if it does it narrows the search down to what the belt drives. Quote Link to comment Share on other sites More sharing options...
Monkpower Posted May 20, 2013 Share Posted May 20, 2013 Definitely check your crank pulley, TRUST ME!!! Mine exploded and did serious damage. Quote Link to comment Share on other sites More sharing options...
charlton Posted May 20, 2013 Author Share Posted May 20, 2013 Cheers guys, think I'll drop it off to a garage in the morning, don't fancy doing more damage Quote Link to comment Share on other sites More sharing options...
Havard Posted May 20, 2013 Share Posted May 20, 2013 I would put money on it being the pulley. It's amazing to hear how much damage can be done when it all goes Pete Tong.! Quote Link to comment Share on other sites More sharing options...
clay Posted May 20, 2013 Share Posted May 20, 2013 Check your powersteering pump aswell mate. Quote Link to comment Share on other sites More sharing options...
charlton Posted May 21, 2013 Author Share Posted May 21, 2013 Diagnosis is a split crank pulley, had a look and there was a bit of play in it. Got a new one on order from Whiftbitz and booked in to be replaced tomorrow There is a bit of noise on start up from the power steering pump but nothing to shout about for now Quote Link to comment Share on other sites More sharing options...
ADD Posted May 21, 2013 Share Posted May 21, 2013 Does the noise disappear when the engine heats up? Quote Link to comment Share on other sites More sharing options...
mellonman Posted May 21, 2013 Share Posted May 21, 2013 it normally does with the crank pulley ,as it expands with the heat they tend to stay together more Quote Link to comment Share on other sites More sharing options...
ADD Posted May 21, 2013 Share Posted May 21, 2013 Ok mate, mine makes that horrible noise when the car is left for a significant amount of time without being used but then when used it disappears and doesnt reoccur unless left again. Quote Link to comment Share on other sites More sharing options...
Monkpower Posted May 21, 2013 Share Posted May 21, 2013 Good save mate, when mine came apart at 70mph (ish..) parts of it smashed the alternator straight off its mountings and sheared some of the other pulleys apart. Quote Link to comment Share on other sites More sharing options...
charlton Posted May 21, 2013 Author Share Posted May 21, 2013 Does the noise disappear when the engine heats up? Ok mate, mine makes that horrible noise when the car is left for a significant amount of time without being used but then when used it disappears and doesnt reoccur unless left again. From the power steering pump? Yeah it is only really on a cold start it moans for a bit and then settles down! On a different note, that strut brace I bought from you has now been promoted to the front as its not aerotop friendly but it compliments my new engine bay perfectly! 70mph (ish..) Good save mate, when mine came apart at 70mph (ish..) parts of it smashed the alternator straight off its mountings and sheared some of the other pulleys apart. I have been pushing it down the motorway recently as well, I'm bricking it about getting it to the garage tomorrow - low boost, RLTC set to wet mode and keeping it in D with overdrive on to help keep the RPM as low as possible - oh, and crossing my fingers Quote Link to comment Share on other sites More sharing options...
Abz Posted May 21, 2013 Share Posted May 21, 2013 My previous TT made exactly the same noise for about a few months before one day the pulley sheared. Though I was the lucky few where it came apart & didn't cause no damage. The noise also only happened every now and then on cold starts & then went away, like you I put it down to the aux belt which it wasn't!! Quote Link to comment Share on other sites More sharing options...
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