Contour Enthusiasts Group Archives Forums General Troubleshooting Engine surges when defroster is on.

I searched the posts and found many surging issues, but none that solve my problem. I have a 2000 SVT Contour. When I turn on the defroster (front) the car starts to surge. It will also surge if I put the dial on defrost/floor or run the A/C. I chalked it up to the compressor pulling on the motor and normal operating, but it is starting to really drive me nuts....HELP!