Crank but NO start on 93 Jeep Cherokee 6 cyl, 4.0L
I have 175k miles on it, owned it for 6 months.
car used to stall randomly, engine wold just go dead, electrical would still be on. i read around, lots of people said it has to do with PCM unit.
I disconnected it dusted it off, looked at it long and intensely...put it back in...now car wont start, it has no spark (EDIT no spark at ignition coil).
it has a new crankshaft positioning sensor, connector to camshaft sensor reads 5V between orange and yellow wire, ignition coil tests within specs with ohmmeter and fuel injector connectors read 7.32V between one of the connector leads and battery ground (shouldnt it read battery voltage? 12V?) with key ON.
i went to junk yard, yanked another PCM from a 93 sport cherokee with same number on it...no difference still no spark/start. (PCM on this car model is by the air filter)
guys...please help me out...this car is in good condition, engine used to run great...i have no idea how to roubleshoot this and no money in the wallet to fix it or buy another car...
i appreciate all the help.
Last edited by h2sammo; 08-30-2008 at 08:46 PM.