Jeep won't start with indications of a bad ecm. Got a new one, no help. Wondering if I need to do something with this little guy
Hmm that does sound PCM related. If you turn the key to battery mode and wait a few minutes, does the CEL ever come on and fire the fuel pump? Wondering if the replacement PCM is bad also.93 2.5 4 cyl, 5 speed (no a/c). Cranks fine, won't start. No check engine light. Changed ecu, no help.
Anything's possible with hacked up wiring. The lack of CEL is very much PCM related for sure though, so it's hard to say.I'll try it tomorrow. I feel like it's not getting power. There is a lot of rigged wiring under the hood
It’s zip tied to the loom that goes to the PCM. Upper driver’s side of firewall area. Close to the brake booster. Have to use older style tools to plug into it.Code reader plug? I didn't think they had those.
Maybe a bad crankshaft position sensor