Engine Performance problem
2000 Jaguar S-Type 6 cyl Two Wheel Drive Automatic 87000 miles
My 6 cyl. Engine in my 2000 Jaguar S-type has begun to run poorly after starting & going through the warm-up cycle. I bought an engine code analyzer that indicated both banks were running lean and the code suggested the MAF sensor. I unplugged the MAF sensor at idle and the engine ran fine. I replaced the MAF sensor with a new unit and the results were the same - poor idle after warm-up & the engine " clears-up" if I unplug the new MAF sensor. What does the MAF sensor communicate with to make the car run efficiently or am I overlooking something else (ECM)? What is the probability that the new MAF sensor is bad?
Monday, May 24th, 2010 AT 4:59 PM