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Showing results for tags 'turbo boost noise whine'.
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Ok my 01 has developed a howling noise (think wind blowing). I'm 99% sure it the turbo because its from the passenger side of the truck and the noise continues for the 3-5 seconds after I kill the engine. I have read that it could be the waste gate stuck close, and I've checked the manifold bolts, some were maybe a half turn loose but still no change in the sound. I've checked the plumbing going to the intercooler and to the intake, all the clamps are tight. Unfortunatley I dont have a boost gauge so I cant tell if the psi has changed. I'm out of ideas. Not sure if its coincidence or not but the noise first appeared after my brother borrowed the truck and ran it low on oil. Not sure how low but low enough to not register on the dip stick.
