Thread: High pitch noise coming from passenger side
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Old 06-18-2009, 06:05 PM   #18 (permalink)
Roo
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Quote:
Originally Posted by CCCLXXZ View Post
Just a speculation, but have you considered an exhaust leak from the header or exhaust (cat)? Typically exhaust leaks are rpm dependent and can have a high pitch noise which get louder as a greater volume of exhaust travels through the system. Based on the service manual, nissan has metering equipment for diagnosing unknown sounds from the chassis and related.

It may well be electrically related, but worth considering any other variables regarding rpm dependent issues.

Good idea but the noise does not increase or decrease with RPMs. If it is idling there is no noise, if you raise the RPM 1 rpm the noise starts and stays at that level throughout whatever RPM your in.
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