XJ8 / XJR (X308) 1997 - 2003
I recently changed the throttle position sensor on a 1999 jaguar xjr with the hope of solving the p0121 code, this however has created a new problem. When attempting to start the car, the engine revs twice at 3000rpm then it drops to 0 and the car loses power, in other words the car won't start...