Bandonbound
NAXJA Forum User
- Location
- So Cal
1993 Cherokee 4.0L . I think I've tried and checked everything. Power everywhere. Disarmed the factory security. No blown fuses of the big 40a one either. Cranks like crazy but no fire. No spark or fuel delivery. Possibly someone criss crossed the jumpers trying to start it with dead battery so searched for fusible links possibly burned but can't really find any. Only CEL code, using the blink system is 12, battery recently disco'd. Then 2 5's. All clear. Did replace CPS, but nothing. Mine is a Calif.emiss. A/T, with security. Trying to find a ECU to try. Did try one without security and nothing. Even with the ECU disco'd , it cranks all the same. No spark no fuel. Fuel pump does engage when you jump 30 and 87 with the relay removed. My ECU is a 56027285. I guess Murphy's Law would prevail if the criss cross jump cables burned the ECU box to save the 40amp fuse in the relay box. Can a scan tool reset/reboot a 93 ECU? I'm about to buy a used ECU, so someone stop me. Thanks for any help.. David in Calif. 714 751 2464 or 865 2464 if need be.