Thanks for the feedback - got it out - just a little hesitation on my part - compeltely disassembled the unit and found the three solder joints on the bottom of the potentiometer were all loose!!!

FIXED IT - now works fine!! First test drive after fixing - took the family to eat - car would not start...removed the air filter cover off - opened the flap and aired it out for about five minutes - and now we are off and running!!!

Thanks to all for the feedback!!!

Mark