1992 GEO STORM User Comment / Complaint

Ecm causes engine rpm to increase during warm/hot weather which will not drop to normal when the clutch is engaged unless the throttle is physically moved (blipped). this dangerous as it doesn't always happen and can cause the car to not decelerate when the throttle pedal is lifted. this is not a once a year defect as you ask below; (had to fill in the blocks or i couldn't continue). it is prevalent on all fwd isuzu built automobiles from 1989 through 1994.