I_s2k

Word. Yes to the firewall ground at both the firewall end and the block end. Where is c101 on these? I saw your tip for it and I can’t find a connector that looks like the c101. Unless I’m completely overlooking it which is very possible. I haven’t seen any harness’ that look to be joined so I doubt it’s been bypassed.

I have not but that’s what’s up next, I have had numerous issues with that on the 4.0s but never had issues related to misfire and poor idle, but I do want to check it anyways.

Yes, replaced the cap, rotor, plugs and wires. Old ones were down to a nub.

Alrighty guys so I’ve spent most of the day cleaning connections and checking grounds. I’ve unplugged probably every relay, ground, and wire connection and cleaned with CRC and numerous brass/steel brushes. Still no dice on the random misfire and bog. Still starts up everytime and I tried to drive it around a bit after putting more fresh gas in it and it does pretty good going 1st through 2nd but in 3rd if you give it anything more than 1/4 throttle it just starts to stumble and misfire and even small backfires if you keep your foot in it haha. I added a new relay and cleaned the other existing one and still does the same thing with the switch being in the off position. I’m thinking the wiring is screwed in the rear causing that issue but who needs turn signals always. I’ll fix that eventually.

Awesome, okay thank you! Like stated above, hopefully I can get to this this week.

Pardon my new-ness but what is ISA? And do you have the link for this DIY?

Nope, for all I know the lights on the cluster probably don’t work haha. But it currently does not have the flasher relay in it. That’s the last piece to my fuse box

Okay, hopefully I can tackle that this week sometime, it’s nice working 4 10’s but not getting home till 6 blows haha. So that hose that runs through the bottom of the intake box up to the throttle is the MAP sensor? I did check and make sure that manifold/header were tight to the block. I also wanted to ask, your guide says 87+ for certain things, does this pertain to 86 as well? I can’t imagine there would be that many changes.

Alrighty, so on a side note I finally got my F350 back from paint after 6 months! Wooooo. But finally had a chance to mess with the Comanche. Replaced plugs, cap, rotor, wires looked good, fuel filter, drained some of the bad gas out and put about 5 gallons and success!! The Jeep will officially move under its own power. Got all the fuses replaced other than the turn signal flasher and undid all the botched wiring. Luckily all of the wire nuts and $#!& wiring was for the radio and speakers. So now it moves under its own power just doing those things, but…..it still misses pretty good on startup and will miss and sputter when trying to drive off and on but it is a significant improvement from what it was. Any ideas? I ran out of daylight to start cleaning connections and grounds. I’m unfamiliar with the TBI setup on the 2.5 and I’m wonder if there’s any kind of sensor or anything I can clean in there? Unfortunately the Comanche had some unwelcome guests in the intake so I had to hand out an eviction but they didn’t get to any wiring thankfully. They did chew through the vacuum hose that runs through the bottom of the Airbox, what is that for? lol Does anybody have any ideas as to why my parking lights come on when I hit the brakes! It’s just the parking lights, not the signals on the side and doesn’t matter if the headlights are on/off.

Thanks! I was looking at this same post from you on another thread!

It’s a very home made bracket, looks to be a bracket that’s mounted to the crossmember behind the bumper.

Word and yea it’s very possible, it’s just odd that the misfire and starting issue are intermittent but the wiring is a disaster all over the Jeep, under hood isn’t too bad. Most of the wire nuts look like they’re attached to the hidden winch which I plan to ditch since I don’t have a controller for nor do I have any idea how the PO set it up. But there are a few under the dash :/ That’s my plan for the weekend, I accidentally ordered 16 spark plugs instead of 4, the listing had it as Count: 1 pack of 1 so I ordered 4 and got 16, paid roughly $20 for all 16😂 fuel filter, cap and rotor should be here today. I had a chance to quickly once over everything again and found out why nothing on the interior works, would probably help if I had a few fuses haha.

Haha I feel you there.

I have one of those same pumps and it constantly gives me a hard time haha. But that was my other thought. And okay thanks!

Would you guy's have any recommendations on draining the tank? I was planning on just cycling the key to on when I go replace the filter and letting it drain out that way. Also I would like to mention that when cold, it takes forever to start. Cranks just fine but takes forever, when warmed up it starts right up and starts every time regardless of temp. In past experience on my XJ's its always been the CPS, any thoughts for the 2.5?

Oh okay awesome!!

If it means anything the comanche is a "custom" trim, do know of anywhere I could get a build sheet to find out what about it is "custom".

It’s very possible and could be contributing to the problem but I just thought it was odd that it does the sputter and miss intermittently, I mean it does it more often than not but a few times it’s ran fine. From what I understand the PO said it’s sat for year, the gas doesn’t smell horrible but I do plan to drain the tank and change the filter this weekend.

Yessir, PO Before the PO deleted the power steering pump and I think put plugs in the gearbox but not confirmed whether or not they’re actually there, I’m just assuming. Yes it has the main drive for alternator, crank, WP, etc. and the accessory drive for power steering.

Awesome, I’ll be sure to check that. Very good info on your site as well, thanks for that haha.

Would like to note as well that the cat is cut off and does have a slight exhaust leak due to a test pipe being just u-bolted in its place but it’s not like a gaping hole or anything, aside from that I believe everything else is intact.

Yes I definitely can. Unfortunately I work 4 10’s so I won’t be off till like 5-6 MT time. I do have one on hand currently. And awesome thanks, I was sifting through cruiser54’s page before buying it, will definitely be spending more time there but it’s thought because I feel like the info is more for the 4.0. This is the only pic I have on hand of the engine bay rn.

Thanks!

Yuuuup unfortunately, I can say that the only lights that work on the entire Jeep is the headlights, fuel gauge intermittent, speedo needle is straight down, it’s mess right now. Yaaaay

Haha well hopefully he has some input. I’ve never had to mess with one and I don’t plan on keeping it but for the time being I’d like it to at least run. I’m pretty positive it has at least one vacuum leak considering it’ll start and high idle for a bit. Unfortunately this one of the deals with wire nuts everywhere and the works haha.