Does not go over 55mph

Asked by Theresa Mar 30, 2020 at 02:13 PM about the 2009 Jaguar XF Luxury RWD

Question type: Maintenance & Repair

I have problems with my
2009 jaguar xf first I
thought it was the
transmission so got it
serviced and that wasn't
it.so I took it to aamco
diagnose 20 cods so
changed the spark plugs
and still the same no
speed over 55 I just need
to know if it's the
computer

2 Answers

MarquiseY answered 2 years ago

It’s because someone put cheap gas in it you need to boost the octane or drop the fuel and get only 93-94

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