Question about 2001 Jaguar XJ8

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2001 Jaguar XJ8 Engine Light/Stuttering

I have a 2001 Jaguar XJ8 with 90K on it. About 6 weeks ago it shut down while driving and I ended up having to replace the fuel pump replaced. When I got it back I still had an engine light on, 'restrictive performance' message comes and goes, it stutters at times, and can be hard to start in the mornings, especially if parked on a slight grade such as the driveway. I was told by the mechanic that worked on the car that I needed the mass air flow sensor replaced which I did myself. I did reset the battery by unplugging for 10 to 15 minutes and had a friend delete the engine diagnostic codes. Drove great for about 2 hours and then the engine light and restrictive performance message came back on. The code descriptions were for a 'manufacture controlled fuel mixture for bank A and bank B'. I believe that they were for to rich.

Any ideas on this? Can a independent mechanic determine this from their diagnostic equipment? Can a Jag dealership get to the bottom of this with their diagnostics?

Thanks,

Stan

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  • stan832 May 29, 2009

    Not yet, is there a simple test that most independents can perform on the O2 sensor to positively determine if it is working properly?



    I know that it was one of the issues that could be in the mix, but neither of my mechanics brought this one up.

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Have you checked the o2 sensors on your exhaust

Posted on May 29, 2009

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