Originally Posted by 62thunderbird

My 05 Limited, 6-speed, started to exhibit an odd idling behavior a week ago. When the clutch was depressed with the car car moving, the idle would go to 1500 and stay there. Once the wheels came to a complete stop, the idle would drop to normal.

As I am approaching the end of my 7-70 coverage, I thought I would have the dealership look at it. The car was throwing no codes and the signals at the TPS were on spec, but the MAF appeared dirty, so the tech cleaned it and pronounced it fixed (to the tune of $100 for diagnosis.) And it worked great. For two hours.

Now with the car moving and the clutch depressed the idle fluctuates between 1000 and 2000 RPM until the wheels come to a stop. At that point the idle returns to normal.

Today while cruising at 45 I hit the clutch to shift and the BAS/EPS light came on steadily. At that point the engine dropped to normal idle and the pedal had no impact on engine speed. I coasted to the side of the road and shut the ignition off. When I restarted, the EPS light went off and throttle action returned. However it still does the wild idle fluctuation with the clutch pushed down and the car moving.

Car has 67000 miles and it has the original battery if that means anything. Car has given me zero problems since new.

Any ideas?