Jeep Driver Posted December 1, 2019 Share Posted December 1, 2019 41 minutes ago, Swampy said: How do you wire the air charge sensor? You are just adding the plug to your wires. There is no other option. Link to comment Share on other sites More sharing options...
Swampy Posted December 2, 2019 Author Share Posted December 2, 2019 4 hours ago, Jeep Driver said: You are just adding the plug to your wires. There is no other option. The wires on the harness? Link to comment Share on other sites More sharing options...
Jeep Driver Posted December 2, 2019 Share Posted December 2, 2019 35 minutes ago, Swampy said: The wires on the harness? Yes. Link to comment Share on other sites More sharing options...
Swampy Posted December 2, 2019 Author Share Posted December 2, 2019 39 minutes ago, Jeep Driver said: Yes. Is there a diagram as to which wire goes to which side of the plug? I know it seems dumb as there are only 2 wires Link to comment Share on other sites More sharing options...
Jeep Driver Posted December 2, 2019 Share Posted December 2, 2019 It doesn't matter which wire goes where. Link to comment Share on other sites More sharing options...
Swampy Posted December 3, 2019 Author Share Posted December 3, 2019 12 hours ago, Jeep Driver said: It doesn't matter which wire goes where. Oh okay good to know. I will order those new sensors Link to comment Share on other sites More sharing options...
Swampy Posted December 21, 2019 Author Share Posted December 21, 2019 I got all of the sensors, clutch line, and vacuum lines in today. Going to start working on it tomorrow. Hopefully it will be running tomorrow. Just waiting on the external slave to show up so it can be running as well Exciting stuff Link to comment Share on other sites More sharing options...
Fernando87mj Posted December 22, 2019 Share Posted December 22, 2019 7 hours ago, Swampy said: I got all of the sensors, clutch line, and vacuum lines in today. Going to start working on it tomorrow. Hopefully it will be running tomorrow. Just waiting on the external slave to show up so it can be running as well Exciting stuff Can’t wait to see tomorrows update !!! Link to comment Share on other sites More sharing options...
Swampy Posted December 22, 2019 Author Share Posted December 22, 2019 Unfortunately, the jeep isn't running yet. I have replaced 90% of the sensors. Just missing one because it was the wrong size. Right now the jeep is a hot mess. I am having trouble trying to get the bulkhead connector to mount to the back of the fuse block. Also I found a random cut wire that ran all the way back to the power distribution block by the battery. Need to pick up some wires to clean up some of the mess and going to spend tonight studying a wiring diagram. Rookie lessoned learned today... Not having enough detailed pictures for reassembly Current state of the jeep..... colorful spaghetti Link to comment Share on other sites More sharing options...
eaglescout526 Posted December 22, 2019 Share Posted December 22, 2019 Well at least she is back on the road to recovery and that's what counts. I'll be checking back for more updates. Link to comment Share on other sites More sharing options...
JMO413 Posted December 23, 2019 Share Posted December 23, 2019 Good to hear and see your getting it back together! Link to comment Share on other sites More sharing options...
Swampy Posted March 28, 2020 Author Share Posted March 28, 2020 Its been a while since the last update, hope everyone is doing well with the state of the country right now and corona virus. But I am not sure what to do with my MJ. I got everything wired up and I can't get it spark or start up. It cranks and cranks just no start. I am pretty sure the ecu is fried from the whole fire incident. I am thinking of scrapping this whole 2.5l and swapping in an LS v8. I wanted not swap anything in but it seems to be the easier route and I'd get more power, drive-ability and less headaches out of the 'ol mj. I priced out the whole swap and its about 5-6 thousand dollars. Seems reasonable for the performance you get. I will eventually swap out the front axle as well because d30+5.13 gears+LS don't seem like a good mix Link to comment Share on other sites More sharing options...
rosco11 Posted April 5, 2020 Share Posted April 5, 2020 Its been a while since the last update, hope everyone is doing well with the state of the country right now and corona virus. But I am not sure what to do with my MJ. I got everything wired up and I can't get it spark or start up. It cranks and cranks just no start. I am pretty sure the ecu is fried from the whole fire incident. I am thinking of scrapping this whole 2.5l and swapping in an LS v8. I wanted not swap anything in but it seems to be the easier route and I'd get more power, drive-ability and less headaches out of the 'ol mj. I priced out the whole swap and its about 5-6 thousand dollars. Seems reasonable for the performance you get. I will eventually swap out the front axle as well because d30+5.13 gears+LS don't seem like a good mix I've never done a swap but if you decide to, I'll certainly follow and I know you'll put in the effort to make it work and be better than before.. let us know what you decide or find out about the 2.5Sent from my Pixel 3a using Tapatalk Link to comment Share on other sites More sharing options...
Swampy Posted April 6, 2020 Author Share Posted April 6, 2020 12 hours ago, rosco11 said: I've never done a swap but if you decide to, I'll certainly follow and I know you'll put in the effort to make it work and be better than before.. let us know what you decide or find out about the 2.5 Sent from my Pixel 3a using Tapatalk Yeah right now it seems like this is going to be the plan of action, I could try to find a 2.5 computer but I'm worried that i will track down a computer hook everything up and it still won't work and I will just be chasing issues. So I decided to start with a clean slate and drop in a different power plant. I appreciate the kind words, right now searching for a job to start saving my pennies. Link to comment Share on other sites More sharing options...
Fernando87mj Posted April 6, 2020 Share Posted April 6, 2020 22 minutes ago, Swampy said: Yeah right now it seems like this is going to be the plan of action, I could try to find a 2.5 computer but I'm worried that i will track down a computer hook everything up and it still won't work and I will just be chasing issues. So I decided to start with a clean slate and drop in a different power plant. I appreciate the kind words, right now searching for a job to start saving my pennies. There’s a harness and Ecu for a 2.5 for sale in the classifieds for 100$ Link to comment Share on other sites More sharing options...
Swampy Posted April 6, 2020 Author Share Posted April 6, 2020 1 hour ago, Fernando87mj said: There’s a harness and Ecu for a 2.5 for sale in the classifieds for 100$ Dang I will keep this in mind. I swapped in a new harness, I'm guessing my computer is fried. Link to comment Share on other sites More sharing options...
Fernando87mj Posted April 6, 2020 Share Posted April 6, 2020 1 hour ago, Swampy said: Dang I will keep this in mind. I swapped in a new harness, I'm guessing my computer is fried. Can’t wait to see what you do with it , wish you the best friend ! Link to comment Share on other sites More sharing options...
Swampy Posted July 7, 2020 Author Share Posted July 7, 2020 Welcome back to the fun show of figuring this out piece by piece. So recap to where we last left off: It was determined that the current ecu might be fried on the comanche when the fire happened. Update to where we are currently: I got a known good ecu from a running truck from a member here on the forums. I plugged it into my truck and we are back to square one. The started clicked and the jeep did nothing. I know the fuel pump gets power when I ground it, and when I tried to turn on the tail lights to check that, they didn't turn on either. Which leads me to believe it wasn't the ecu but fuses, relays and or wiring. This week I will be checking all the fuses and relays and the starter relay. I am open to suggestions and any help would be appreciated. Pics of the new parts Link to comment Share on other sites More sharing options...
Swampy Posted July 7, 2020 Author Share Posted July 7, 2020 I replaced all the relays, fuses and checked all the grounds. the fuel pumped primed when I went to start it the first time, the started clicked and that was it. The jeep still isn't starting or cranking over. I think it might be the started as I tried to jump the started with no luck. Tomorrow will be checking the starter, I have 2 so hopefully one works Link to comment Share on other sites More sharing options...
rosco11 Posted July 8, 2020 Share Posted July 8, 2020 Hope you get the issue located!Sent from my Pixel 3a using Tapatalk Link to comment Share on other sites More sharing options...
Swampy Posted July 10, 2020 Author Share Posted July 10, 2020 So I have no idea what is happening with my comanche. Spent today wrenching on it to no avail. The comanche is cranking, fuel pump is priming, the cps is working, ignition coil is sending power to the distributor, but still no sparky sparky boom boom I thought maybe the timing was off but the timing is fixed and the plugs are in the right order according to the firing order stamped on the intake manifold. (1342) I don't know what it could be. Thoroughly out of ideas. Any help would be greatly appreciated. Link to comment Share on other sites More sharing options...
eaglescout526 Posted July 10, 2020 Share Posted July 10, 2020 But is the injector pulsing? Thats the real question. It sounds like everything is in order except fuel going down the intake. Just helped SoCalManche with his 86 with a no fire condition and spent 25 pages rooting out the ECU as the problem. Can you poor fuel down the TB and get the engine to run? Link to comment Share on other sites More sharing options...
Swampy Posted July 10, 2020 Author Share Posted July 10, 2020 4 minutes ago, eaglescout526 said: But is the injector pulsing? Thats the real question. It sounds like everything is in order except fuel going down the intake. Just helped SoCalManche with his 86 with a no fire condition and spent 25 pages rooting out the ECU as the problem. I will check that tomorrow. While cranking it should be spraying into the manifold? Link to comment Share on other sites More sharing options...
eaglescout526 Posted July 10, 2020 Share Posted July 10, 2020 5 minutes ago, Swampy said: I will check that tomorrow. While cranking it should be spraying into the manifold? Correct. Link to comment Share on other sites More sharing options...
Swampy Posted August 11, 2020 Author Share Posted August 11, 2020 Kinda disappeared from my build thread for a little while. Breathing new life into the comanche by doing a 1996 swap, similar to a 97+ but not quite as there are no firewall modifications to be made that I am aware of yet. Tomorrow I am finish pulling the interior out of the mj and starting to pull the electronics from the bay to prep to pull the drive train from the jeep (which should be done this weekend) Then next week I will be pulling the engine from the cherokee and putting it in the comanche. I will do my best to document the swap with lots of pictures and videos on my youtube channel. I also have a bunch of parts for sale if you check Here Link to comment Share on other sites More sharing options...
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