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Old 05-06-2018, 10:55 AM   #4
BYprodriver
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Join Date: Oct 2008
Location: O.C. CA
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Garage
Quote:
Originally Posted by chemistone82 View Post
I’d appreciate some advice. Thanks in advance. I have a high pitch whine above 2900 rpms. Here’s what I know so far

Definitely in the engine bay.
Alternator is charging at 14.1 V
It’s not the SAI system
Doesn’t seem to affect the running of the car

Any ideas what this could be?

98 2.5L 5 speed
Remove the serpentine belt to see if the noise goes away, if it does the cause is a noisy pulley or water pump. If you detect any looseness or leakage from water pump replace with a new Pierburg pump.
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OE engine rebuilt,3.6 litre LN Engineering billet sleeves,triple row IMSB,LN rods. Deep sump oil pan with DT40 oil.
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