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96 900 SET - Waste gate noise
Posted by Geoff Waters (more from Geoff Waters) on Thu, 21 Jun 2001 10:59:53
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I recently had an oil change at a quickie lube place, and afterwards I can hear what I think must be the waste gate operating. When the boost starts to build say 1/3 in to the boost range I start hearing a sound like bleeding the air from a tire valve. It gets louder as the boost reaches the top of the "yellow." When I lift my foot, it stops instantly. The boost gauge seems to show good vacuum on deceleration, so I'm hoping it isn't a gasket problem. Otherwise the car is running more or less as it did before the oil chanhge. Could the lube guy have knocked off or disturbed some kind of baffle or silencer on the waste gate that prevented me from hearing this sound in the past?
Check engine light update: tried the Techron thing and changed gas stations. It went out for three days and then came back on.
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