the short of it, my wife's 02 wj limited, with a 4.7
I changed the head gaskets a few weeks back. it's all together, idled ruff, (starts right up ) .. shut off and gave a code a p01389. 30 amp fuse was popped. replaced fuse, happened again.....
from moving the wires to the valley and back.. checked for shorts in the wires. notta no opens or out of limits... checked coils, injectors, sensors. notta..relays pulled o2 fuse, and sensors. same deal... pulled each coil and ran, no changed every thing is with in spec as per my d.c. service manual.. love that book :)
currently.... the jeep starts easy idles great cold, idle kick down no problem... after 8-10 mins stops running like the key was turned off the fuse doesn't pop in the p.d.c. ??? restart runs less time idles ruff, pops fuse will run 30 seconds - 2 mins
to narrow things downlast night ... a straight power line to the coils was run with 20 amp blade fuse, it will start and now popps that 20 amp fuse, on the ruff idle.. it popps as it is about to recover from the low...
last night also jumped the rear coil wire out of the (loom ) harness, not knowing was could be bad back there... same deal still shuts off...
is it poss to have 2 bad coils going to ground??
i've been chasing this for 2 weeks... any help would be great
for the whole story check here....
sorry i can't post the link to the whole story yet....
i've been to the dealer, and talked to KOLAK'S JEEP, and he also feels it is a electrical issue.. the engine purrs at cold idle, and rev's great... to scann too with live diag shows were are good there....
thanks brian