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.
I don't find that as a real code for that car. What are you using to retrieve that?
October, 18, 2012 AT 4:55 AM
Thanks for quick response. I could not find fault failure 99 on my manual. It displayed only this code. I dont know what it is. Let me describe my car problem a little more. My car can start at 500RPM ( should be 1500RPM) and shake engine. If I step on the gas, the engine will be fine, e.G. 30MPH at park position It could not go higher speed of 50 on the highway - heard noisy things under the car. I replaced plugs, wires, gas pump, filter. Next will be carnister, ignition, or throtle. Any advice?
October, 18, 2012 AT 4:58 AM
My car has ODB1 next to cruise control. I pressed VCM button and showed this code. I removed ground battery and then again it showed the same code.
October, 19, 2012 AT 9:44 AM
Disconnecting the battery will simply erase all stored codes. You need a professional OBD1 scan tool to read the actual stared codes to have any kind of starting point here.