The Explorer starts and runs great. At random times while driving, the engines drops 4 to 5 hundred RPMs momentarily (1 second) in pairs. There are no OBDII codes. Recently replaced clutch. It was driven 40-50 miles a day for two weeks without a glitch. The block ground is clean and secure to a starter mounting bolt. Could it be the PCM? The OBD should be monitoring sensors. Any idea?
Jul 18, 2008 at 10:24 AM