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Chris (aka- Moose)
Chris (aka- Moose), Technician
Category: Transmissions
Satisfied Customers: 1766
Experience:  16 yrs. experience with auto, manual, & CVT drivelines
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95 buick park Avenue sounds like tranny knock it knocks at

Customer Question

95 buick park Avenue sounds like tranny knock it knocks at idle but Rev it up it goes away. Then in gear struggles to get to speed than its fine. But hit overdrive and it shakes and struggles to get to speed again
Submitted: 1 year ago.
Category: Transmissions
Expert:  Jerry replied 1 year ago.

Hello and welcome. My name is ***** ***** you for visiting the site, I am reviewing your question and will reply shortly, thanks.

Expert:  Jerry replied 1 year ago.

Are you sure that the knock is not from the engine?

Customer: replied 1 year ago.
It's the harmonic balancer
Expert:  Jerry replied 1 year ago.

I see, thanks. Yes that is fairly common on them. When the balancer knocks it will cause the PCM to retard the timing, thinking it's a spark knock.