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Restricted performance message

Tiny
DRPUP
  • MEMBER
  • 2000 JAGUAR VANDEN PLAS
  • V8
  • 2WD
  • AUTOMATIC
  • 68,000 MILES
Random cylinder misfire code and cyl.1-8 misfire codes. Dealer changed MAF but no help. They do not know cause.
Saturday, January 24th, 2009 AT 1:29 PM

2 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,968 POSTS
Most of the time when a random misfire codes if the MAF doesn't fix it it will be a weak fuel pump or the engine needs new spark plugs.

Here is a guide to help you see what you are in for when changing the spark plugs

https://www.2carpros.com/articles/how-to-change-spark-plugs

I would also service the throttle body

https://www.2carpros.com/articles/throttle-actuator-service

Also scan the PCM for codes.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run some tests and get back to us.

Cheers, Ken
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Friday, November 27th, 2009 AT 5:58 AM
Tiny
DRPUP
  • MEMBER
  • 1 POST
Thanks you so much for the guides I just had the spark plugs replaced so I services the throttle bore which was filthy and cleared the codes engine runs great no codes or message. Thanks again I love this site.
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Saturday, November 28th, 2009 AT 5:08 AM

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