So I had to replace my radiator early this week and after replacing that, the water pump, thermostat, and all the hoses I then filled the cooling system up. Cranked her up and let her run at idle for about 20 minutes. Got it up to operating temp. Burped the system of the air and got the radiator all topped off. Turned it off and then cleaned up the the puddles and hosed down the area underneath the car. Ran some water over the area of other radiator as well.
Came back out a while later that night and went to start the Jeep up, which has not had a single starting issue since I’ve had it, and it would crank over for days, but would not fire up at all. The relays click, there is pressure at the rail, just doesn’t seem to have any spark.
I have changed out the crank position sensor and cam position sensor on a hunch of best know problem areas. Changed out the distributor cap and rotor while I was there. Got someone over to look at the electrical, but they had only enough time to let me know that there is voltage to and from both the cam sensor and the fuel pump, but that there is voltage only getting to the crank position sensor, not back from it. I have learned that the PCM is a problem child as well.
However, out of curiosity I flipped the ignition to see if there were any OBD and for the first time I got more than just the two prior (12 and 55). This time I had ODB code 41 “alternator field switch” and the battery is basically dead. And the person that came out is thinking things a possible timing chain slip…
I’m descent with the mechanical. I will find someone for things outside of my comfort zone, like timing, transmission and the like. Electrical is okay, I just don’t have the right testing equipment yet. I have had my share of alternators go out, while I am driving. I have no clue if this is all related to one thing, not related at all, or just a calamity of errors.
If there is anyone that has had this history before, I’d love to get a little clarity on this before I start throwing more into it that may not be needed. I was just getting ready to go down the road of getting a PCM, but that is about as blind in action as the other items so far.