Originally posted by C10+Nov 21 2003, 01:15 AM--></span><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (C10 @ Nov 21 2003, 01:15 AM)</td></tr><tr><td id='QUOTE'><!--QuoteBegin--M-827@Nov 20 2003, 03:46 PM
The fact that it does it in park may be because there is no load on the engine from the transmission. When you stop at lights, I presume you leave it in Drive. If this is the case, the engine is working against the torque convertor which will slow it down a bit.
Have you had anything done to the car recently that my have disturbed something under the bonnet? If your car has engine management it could be an electrical fault like a faulty sensor. Or it could be something as simple as the accelerator cable sticking - especially if it is worn and the inner has frayed and is binding on the outer.