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clicking/buzzing noise
Posted by Christianson, Gary (more from Christianson, Gary) on Tue, 24 Apr 2001 23:23:16
My '91 9000T has started to give me a very strange noise. It only happens
when the engine is cold or cool, but not once it is totally warmed up. It
occurs as the boost indicator first starts to show boost, and is a clicking
or chattering sound that increases in frequency as the boost increases until
it is a low pitched howl at full boost. I have disconnected the boost
control solenoid, but still get the noise although it never gets to as high
a freq, since the boost is limited to base levels. I have looked for leaks
on the pressure side of the inlet plumbing to no avail. Could the fuel rail
dampner cause this type of noise if it failed?
It is driving me nuts - any ideas?
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