bobs77vet
Well-known member
i have a 99 jag xj8l and it has had a vibration at 53 mph that has been unfixable with alignments wheel balancing rotation etc etc etc......the jag dealership couldnt even figure it out......well any way the check engine light came on and my local mechanic determined that the two mass air flow sensors needed to be cleaned and that i had both banks of the engine getting lean mixtures.....he fixed it and guess what went away.....when it was running lean it must have set up some wierd harmonics in the car...strange.... if it didn't happen on my car i wouldn't have believed it.....


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