My engine revs up and down while in idle and also shakes real bad at high rpms. on 1993 Ford Explorer

Could it be a motor mount problem? The idle problem is maybe a sensor or do I need a new ECU? because the cruise control doesn't work either.

by in Salina, KS on March 22, 2012
1 answer
ANSWER by on March 22, 2012
i think you should spend 100.00 and get a prof diag. don' guess its costly