2008 liberty 182k 3.7l lmited 4x4
Once in a great while I had issue where it would crank and barely turn over but not really run. clunky and no gas pedal with flashing lightning bolt warning light. Would have to shut off and then restart. Usually cured the problem on first restart.
Tipm was replaced with a rebuilt one a few years ago.
A few weeks ago, it started having the barely running issue (described above) only after shutting it off for short errands intermittently. leaving it overnight or parked for around an hour showed no starting issues.
Then had a major problem of it not wanting to run at all (cranks fine) and after getting it started, it overheated on the way home. The water pump crapped out and failed bad. Bearing had about half inch of play in it.
Put a new water pump in. Stupidly disconnected the battery and forgot to read the codes first. But the water pump went in fine and after fighting with the air in the lines (bleeder valve frozen) I got it running well. No starting issues. I had kind of figured the bad water pump wasn't letting everything spin freely causing some sort of safety thing to kick in.
Fast forward a couple weeks to last week and the starting problem is reversed. Short errands or trips no problems. If it sits overnight, it cranks but doesn't start. Now as of the other day it won't start at all.
I've tried leaving the battery off overnight to reset everything, that didn't work. I'm not hearing the fuel pump humming in the rear of the tank. It threw P0513 (incorrect immobilizer key) and P0522 (Oil pressure switch low voltage). Those codes however seem to be from too many failed starts as I understand it. The P0513 has gone away and only The P0522 code remains.
I tried the bypass cable. Cable is getting warm so it has power but no hum from fuel pump. I swtiched around the asd relay and any fuses listed on the panel that had to to do with asd. Everything seems fine. I tested the relays and they all seem fine. Continuity through them when powering them on and they click. Battery (three years old) seems fine and I've been making sure to put it on a maintainer at night to keep from trashing it.
It's the original fuel pump/filter so it needs to probably be replaced anyways. How bad is it to change out? Of course I don't have the access panel. All videos I've seen have it up on a lift. I crawled under and space is tight and it is quite rusty which has me wondering about the bolts being frozen. My luck with frozen bolts doesn't ever favor me. The only other thing it might be is that the PCM is going out. I do still have the old TIPM since the company only offered 35 bucks for the old one, I decided to keep it. It was doing crazy things with the headlights and stuff. Never had starting issues.
Any other testing I can do to determine if it's an electrical issue without dropping the tank? I can do mechanical parts all day. Electrical stuff I suck at with cars. Honestly with electrical, you have to treat me a bit like an idiot. I also don't know if I'm in the mood to really replace it myself. I'm only 41 but I'm starting to not enjoy these sorts of repairs that aren't just straight forward and easy.
Once in a great while I had issue where it would crank and barely turn over but not really run. clunky and no gas pedal with flashing lightning bolt warning light. Would have to shut off and then restart. Usually cured the problem on first restart.
Tipm was replaced with a rebuilt one a few years ago.
A few weeks ago, it started having the barely running issue (described above) only after shutting it off for short errands intermittently. leaving it overnight or parked for around an hour showed no starting issues.
Then had a major problem of it not wanting to run at all (cranks fine) and after getting it started, it overheated on the way home. The water pump crapped out and failed bad. Bearing had about half inch of play in it.
Put a new water pump in. Stupidly disconnected the battery and forgot to read the codes first. But the water pump went in fine and after fighting with the air in the lines (bleeder valve frozen) I got it running well. No starting issues. I had kind of figured the bad water pump wasn't letting everything spin freely causing some sort of safety thing to kick in.
Fast forward a couple weeks to last week and the starting problem is reversed. Short errands or trips no problems. If it sits overnight, it cranks but doesn't start. Now as of the other day it won't start at all.
I've tried leaving the battery off overnight to reset everything, that didn't work. I'm not hearing the fuel pump humming in the rear of the tank. It threw P0513 (incorrect immobilizer key) and P0522 (Oil pressure switch low voltage). Those codes however seem to be from too many failed starts as I understand it. The P0513 has gone away and only The P0522 code remains.
I tried the bypass cable. Cable is getting warm so it has power but no hum from fuel pump. I swtiched around the asd relay and any fuses listed on the panel that had to to do with asd. Everything seems fine. I tested the relays and they all seem fine. Continuity through them when powering them on and they click. Battery (three years old) seems fine and I've been making sure to put it on a maintainer at night to keep from trashing it.
It's the original fuel pump/filter so it needs to probably be replaced anyways. How bad is it to change out? Of course I don't have the access panel. All videos I've seen have it up on a lift. I crawled under and space is tight and it is quite rusty which has me wondering about the bolts being frozen. My luck with frozen bolts doesn't ever favor me. The only other thing it might be is that the PCM is going out. I do still have the old TIPM since the company only offered 35 bucks for the old one, I decided to keep it. It was doing crazy things with the headlights and stuff. Never had starting issues.
Any other testing I can do to determine if it's an electrical issue without dropping the tank? I can do mechanical parts all day. Electrical stuff I suck at with cars. Honestly with electrical, you have to treat me a bit like an idiot. I also don't know if I'm in the mood to really replace it myself. I'm only 41 but I'm starting to not enjoy these sorts of repairs that aren't just straight forward and easy.
