Goinghuntin Posted July 13, 2010 Report Share Posted July 13, 2010 OK my brother drives a '93 Jeep Cherokee 4.0L and just the other day when he went to start it the engine will turn over but he gets no spark to the plugs and no fuel pressure. Dad tried changing the ECM but still nothing. What do you got for me Shaun??? Nathan Quote Link to comment Share on other sites More sharing options...
Shaun_300 Posted July 13, 2010 Report Share Posted July 13, 2010 Check to see if any of the main engine grounds are bad. Sometimes they'll cause some funky things! I just had a Cadillac a couple months back with insane displays on the digital dash, fuel pump ran all the time, key out of the ignition, no crank condition, all sorts of weird ones. Ended up being the ground that goes from the engine to the body. Quote Link to comment Share on other sites More sharing options...
Goinghuntin Posted July 14, 2010 Author Report Share Posted July 14, 2010 Well I had dad test voltage readings at the ASD relay, had power going through the relay to both the injectors and the ignition coil. Found out no power is coming out the coil though. Pretty sure the ASD relay is bad, Dad said he switched a few relays and the fuel pump worked. So I guess we'll try putting in a new relay and ignition coil. Nathan Quote Link to comment Share on other sites More sharing options...
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