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High pitched whistle under decel and low load.

pats2001

NAXJA Forum User
Location
Iowa
FYI I chased this noise for a week and checked the forums. Nothing was exactly like the noise I was getting. It was making me crazier...
Pulled the throttle body to clean the IRC and found the leak causing the problem. The throttle body gasket surface was warped from someone tightening it down too tight.
Re flattened it with glass plate and new gasket problem solved.
 
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