I've been looking through a lot of posts, but I have one detail that is different than any other I have found. Full background so far:
1997 Wrangler Sport
4.0 Manual Trans
I had hit one of my light switches without knowing it and left my Jeep in my driveway with LED bar light on (daytime). That afternoon as the sun was going down, I noticed a light outside my window and found what I had done. Didn't fully kill the battery but it was close. Attempted to jump it, but it would only turn over and not start. Not having much time to work on it, I left it and tried to jump again the next day with the same result. With my luck, I figured the fuel pump had probably quit. The low battery part is what I have not seen anyone else have just prior to having this no start issue. Everything was running fine prior to that.
Got busy with work and didn't have time to diagnose the issue for a few months and we were going into winter. I replaced the battery about a month ago and it is still only turning over but not starting. Hit the bleeder valve on the fuel rail and found no pressure. Bypassed the fuel pump relay and the pump kicked on, having good flow (500ml in ~23secs). Attention got diverted to spark and found I had no spark on all cylinders. Checked from ignition coil and had nothing. Ignition coil was cracked in several places, so I replaced it (old one was still within spec when tested with ohm meter).
Am I missing something simple or is this leading to the ASD circuit? No codes are showing (although I failed to check codes prior to changing the battery ). I did switch relays around and it did not fix the problem. All fuses are good in PDC and glove compartment. I don't have anyone else around right now to help with turning the key on while I stand over the relays for clicks or to test if the ECM is actually sending the ground to the ASD relay for the two seconds after key is turned, so I will have to run some temp wires on a meter or light probably today. I'm also looking closer at the circuit now to see which blades I need to run a jumper between to bypass the ASD to see if it will start. But I wanted to drop in and see if anyone knew something that I didn't that happens when the battery is almost killed and it sits for a while.
Side note: No aftermarket lighting is tied in with factory wiring. I installed them on their own circuits with their own relay box.
1997 Wrangler Sport
4.0 Manual Trans
I had hit one of my light switches without knowing it and left my Jeep in my driveway with LED bar light on (daytime). That afternoon as the sun was going down, I noticed a light outside my window and found what I had done. Didn't fully kill the battery but it was close. Attempted to jump it, but it would only turn over and not start. Not having much time to work on it, I left it and tried to jump again the next day with the same result. With my luck, I figured the fuel pump had probably quit. The low battery part is what I have not seen anyone else have just prior to having this no start issue. Everything was running fine prior to that.
Got busy with work and didn't have time to diagnose the issue for a few months and we were going into winter. I replaced the battery about a month ago and it is still only turning over but not starting. Hit the bleeder valve on the fuel rail and found no pressure. Bypassed the fuel pump relay and the pump kicked on, having good flow (500ml in ~23secs). Attention got diverted to spark and found I had no spark on all cylinders. Checked from ignition coil and had nothing. Ignition coil was cracked in several places, so I replaced it (old one was still within spec when tested with ohm meter).
Am I missing something simple or is this leading to the ASD circuit? No codes are showing (although I failed to check codes prior to changing the battery ). I did switch relays around and it did not fix the problem. All fuses are good in PDC and glove compartment. I don't have anyone else around right now to help with turning the key on while I stand over the relays for clicks or to test if the ECM is actually sending the ground to the ASD relay for the two seconds after key is turned, so I will have to run some temp wires on a meter or light probably today. I'm also looking closer at the circuit now to see which blades I need to run a jumper between to bypass the ASD to see if it will start. But I wanted to drop in and see if anyone knew something that I didn't that happens when the battery is almost killed and it sits for a while.
Side note: No aftermarket lighting is tied in with factory wiring. I installed them on their own circuits with their own relay box.