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 Post subject: Overly sensitive knock sensors on B280F
PostPosted: Fri Jun 30, 2017 1:07 pm 
Cams + Headers

Joined: Wed Jun 07, 2017 6:59 pm
Posts: 60
Location: waterloo, ontario
I cleaned the throttle body and reattached everything (so I thought)
yesterday.

Today, I took it for a drive and when the car idled, the rpms started
jumping up and down.

I checked around and found a loose rubber grommet which secures
the plastic intake between the MAS and the throttle body. Pushed that
in back - which I think stopped it rattling against the engine.

Idle went back to steady smooth.

Is this a common problem? Some small vibration tricks the knock sensors.
I read about this on another forum. The guy replaced the knocks sensors
with less "sensitive" ones.


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