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1992 Infiniti Q45 my car shakes in park and when I brake.

Tiny
BIANCADIAZLEO
  • MEMBER
  • 1992 INFINITI Q45
  • V8
  • 2WD
  • AUTOMATIC
  • 222,882 MILES
My car shakes in park and when I press the brakes down at a complete stop. My check engine light goes on and off and I just got new spark plugs and fixed my injectors in the car replaced 4 injectors. Car is still running rough and check engine light still comes on but goes off sometimes too.
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Monday, July 12th, 2010 AT 10:14 AM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

Thank you for the donation,

You may have a defective brake booster that is leaking engine vacuum when applied, ( the booster uses engine vacuum to operate) I would have this checked first.

Mark (mhpautos)
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Monday, July 12th, 2010 AT 8:19 PM

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