Did a search, need more. Not a newbie :flipoff2:
A buddy just swapped his 4.2 in a '79 CJ for a 4.0 from a '94 GC. Computer is wired in, O2 sensor, CPS on new damper. Fuel pressure is correct. Engine starts, runs for 2 seconds, then shuts down. Adding fuel to the throttle body will keep it running. It seems that the injectors are shutting down from the ASD relay.
The VSS is not hooked up, we think it should stay running without the VSS.
The other thing is that when he heard this engine run at the boneyard, it did the same thing while still in the GC. The guy said it was the Sentry Key, he had to lock then unlock the door with the key, then the engine ran fine.
So, if it's not the VSS, is it this sentry key crap? Any ideas on how to get around that?
Thanks,
A buddy just swapped his 4.2 in a '79 CJ for a 4.0 from a '94 GC. Computer is wired in, O2 sensor, CPS on new damper. Fuel pressure is correct. Engine starts, runs for 2 seconds, then shuts down. Adding fuel to the throttle body will keep it running. It seems that the injectors are shutting down from the ASD relay.
The VSS is not hooked up, we think it should stay running without the VSS.
The other thing is that when he heard this engine run at the boneyard, it did the same thing while still in the GC. The guy said it was the Sentry Key, he had to lock then unlock the door with the key, then the engine ran fine.
So, if it's not the VSS, is it this sentry key crap? Any ideas on how to get around that?
Thanks,