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07-21-2010, 07:54 AM | #1 | |
AF Newbie
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Loud, high pitched whistle
have a 97 town car, upon start up there is a loud, high pitched whistle/hum(not sure how to describe it) type noise comming from the engine. Possibly a pulley?? it doesnt sound anything like a serp belt its much louder and a different sound. I cant pinpoint where it is comming from. It does sound like the front of the motor. Any body have any ideas? Any input would be appreaciated thank you
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07-21-2010, 08:14 AM | #2 | |
AF Enthusiast
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Re: Loud, high pitched whistle
Open the filter airbox. Is the noise coming from there? If so, you need to replace your Idle Air Control (IAC) Valve.
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07-21-2010, 10:51 AM | #3 | |
AF Regular
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Re: Loud, high pitched whistle
If the noise is RPM related, then I'd have to guess a Power Steering Pump Pulley as the noise you describe is exactly that of a Jeep GC I owned.
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07-21-2010, 06:35 PM | #4 | |
AF Regular
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Re: Loud, high pitched whistle
You have the same issue as me. Check your fuel pressure regulator. That was my issue. That sound is annoying.
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07-21-2010, 10:22 PM | #5 | |
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Re: Loud, high pitched whistle
Mine was the plastic tube that goes from the back of the engine to the IAC. but I have a older engine design than yours. If you raise the idle up in PARK, dies it go away?
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07-21-2010, 10:49 PM | #6 | |
AF Newbie
Thread starter
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Re: Loud, high pitched whistle
hey guys thanks for all the tips so far. It doesn't go away as I raise the rpms. It seems to get a little worsebut its hit and miss while I raise the rpms
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07-22-2010, 12:49 PM | #7 | |
AF Regular
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Re: Loud, high pitched whistle
Attached you will find the fuel pressure regulator. Try that and see if that is what the noise is. That was my problem.
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