QuillsXJ
NAXJA Forum User
- Location
- California
I have always had great luck using these forums, getting help, and resolving issues in the past so here goes...
I recently purchased a non-running 1993 Jeep Wrangler YJ 2.5l with an AX5 to use as a platform for a build. I still have my XJ. This Wrangler will not start! The previous owner claimed that he was driving it a few weeks ago and then the engine just shut off and died. When I acquired the vehicle I noticed that the previous owner forgot to reconnect the engine to firewall ground strap which I believe could've led to destroying an electrical component. Just don't now what/where and I am running out of ideas fast. The starter motor cranks away, but no fire and nothing close to even a sputter or acting like it wants to fire.
So the previous owner and I have been chasing it with new electrical parts:
-New battery
-Renewed battery cables
-New CPS
-New TPS
-New Cam Sensor
-New Ignition Coil
-New Dist Cap & Rotor
-Fuel Pressure test at fuel rail while cranking 35-40psi
-Cylinder Pressure all verified
-Verified all fuses are intact
-Timing Chain verified in alignment with sprockets
-Piston 1 TDC verified with Dist rotor 1 plug wire
-Top of engine head inspection looked okay
-Verified continuity through Cam wires to PCM connector plug
-Verified continuity through Ignition Coil wires to PCM connector plug
-Check engine light seems to be operating normally and is not illuminated. Codes are negligible 12 and 33.
The one thing I am unsure of how to identify as being bad is the PCM? Perhaps having a disconnected engine ground fried an ignition component on the PCM? Any help would be appreciated!
I recently purchased a non-running 1993 Jeep Wrangler YJ 2.5l with an AX5 to use as a platform for a build. I still have my XJ. This Wrangler will not start! The previous owner claimed that he was driving it a few weeks ago and then the engine just shut off and died. When I acquired the vehicle I noticed that the previous owner forgot to reconnect the engine to firewall ground strap which I believe could've led to destroying an electrical component. Just don't now what/where and I am running out of ideas fast. The starter motor cranks away, but no fire and nothing close to even a sputter or acting like it wants to fire.
So the previous owner and I have been chasing it with new electrical parts:
-New battery
-Renewed battery cables
-New CPS
-New TPS
-New Cam Sensor
-New Ignition Coil
-New Dist Cap & Rotor
-Fuel Pressure test at fuel rail while cranking 35-40psi
-Cylinder Pressure all verified
-Verified all fuses are intact
-Timing Chain verified in alignment with sprockets
-Piston 1 TDC verified with Dist rotor 1 plug wire
-Top of engine head inspection looked okay
-Verified continuity through Cam wires to PCM connector plug
-Verified continuity through Ignition Coil wires to PCM connector plug
-Check engine light seems to be operating normally and is not illuminated. Codes are negligible 12 and 33.
The one thing I am unsure of how to identify as being bad is the PCM? Perhaps having a disconnected engine ground fried an ignition component on the PCM? Any help would be appreciated!