I have Jag 1994 XJ6. My car has a fault failure 99 on built in ODB1. It starts fine at idle/park position with low RPM (less than 1000) and shake engine. It ran fine at 30-40MPH and made engine noise or stumble when accelerating above 50MPH.
Pls help. Thanks.
have the same problem?
Wednesday, October 17th, 2012 AT 6:42 PM