Chasethexplorer
Well-Known Member
- Joined
- May 12, 2009
- Messages
- 129
- Reaction score
- 0
- City, State
- Austin, Texas
- Year, Model & Trim Level
- 99 Explorer Sport
I am having an issue that I beleive is my wiring harness, below is a post that I put in the modified 2nd gen forum of my problems, since then I have replaced intake gaskets, maf, 4 o2 sensors, plugs and wires. I took it to a shop and they said it seems like wiring is messed up or possibly the computer, I beleive it is the wiring because when I pulled the trans a wire got snagged and pulled fairly hard on the harness, i doubt the computer would just go out at exactly the same time a do a transmission swap, and also the whole ground issue that I was having (stated below) makes me think that it has to be wiring.
99 sohc 5 speed swap done about 6 months ago. Ok so truck was running like normal, maybe a slight miss that had been happening for a while, I bought a 1354 transfer case and a 4wd trans to convert to 4wd. The swap went fine except when I tried to start the truck it would just keep blowing the starter fuse so we figured out that if we undid the ground from the battery to the starter it would start so we ended up running a new ground cable from the battery over to the alternator bracket. I figured that was the last of the problems, until I drove the truck, it was hesitating really bad and seemed like it wasnt running on all cylinders. after driving for a few days it got noticeably worse to where sometimes i could barely break 1500 rpm especially when the engine was cold. I noticed a bad exhaust leak on both sides so I took them back off and retried, I dont think they are leaking anymore, When i would floor it, it would seem to have about normal power. I started getting codes 1131, p1132, p1151,p1152, which says both forward o2 sensors- lack of ho2s- 11 switches- sensor indicates lean, and rich. I dont understand how they both can be reading rich and lean at the same time. At first a neighbor mechanic took a look at it and said it seemed that when he touched the pcm wires that it fixed it so he greased up the terminal and I left, after paying him I realized that It wasnt fixed. I ended up replacing all o2 sensors with ones from the junkyard because I dont have 200 to spend on all four, and the first day this started I looked into my exhaust, no muffler and the o2 sensors were glowing bright red. I also thought that It could be intake manifold gaskets so I replaced those, after replacing all those it now runs a million times better, but I got the same codes back and still dont have nearly as much power as I used to and you can tell there is still a miss or something, it still hesitates a little bit when partial throttle, and seems that randomly I get all power back for a short amount of time. Another wierd thing that confused me was i pulled the wires at the coil to see if i was getting spark to all cylinders and the first day when i pulled the passenger side wires it made no difference in idle, now today after i replaced all of that, the passenger side wires made a difference, and the driver side dont. My next thoughts were to clean maf check for more vacuum leaks, change pcv, change spark plugs and wires, but I have no money at the moment haha so that will have t wait a couple days. Does anyone have any idea what could cause this damn problem, It doesnt seem to make any sense to me. Oh and I used 4 low today and it is the most badass feeling going from a 2wd auto to 4wd 5speed haha.
I guess I am asking for any other possibilities but im pretty sure its the harness and if so what would be the best way to go about replacing it, all the ones at the junkyard are already hacked up ufortunately.
Thanks, Chase
99 sohc 5 speed swap done about 6 months ago. Ok so truck was running like normal, maybe a slight miss that had been happening for a while, I bought a 1354 transfer case and a 4wd trans to convert to 4wd. The swap went fine except when I tried to start the truck it would just keep blowing the starter fuse so we figured out that if we undid the ground from the battery to the starter it would start so we ended up running a new ground cable from the battery over to the alternator bracket. I figured that was the last of the problems, until I drove the truck, it was hesitating really bad and seemed like it wasnt running on all cylinders. after driving for a few days it got noticeably worse to where sometimes i could barely break 1500 rpm especially when the engine was cold. I noticed a bad exhaust leak on both sides so I took them back off and retried, I dont think they are leaking anymore, When i would floor it, it would seem to have about normal power. I started getting codes 1131, p1132, p1151,p1152, which says both forward o2 sensors- lack of ho2s- 11 switches- sensor indicates lean, and rich. I dont understand how they both can be reading rich and lean at the same time. At first a neighbor mechanic took a look at it and said it seemed that when he touched the pcm wires that it fixed it so he greased up the terminal and I left, after paying him I realized that It wasnt fixed. I ended up replacing all o2 sensors with ones from the junkyard because I dont have 200 to spend on all four, and the first day this started I looked into my exhaust, no muffler and the o2 sensors were glowing bright red. I also thought that It could be intake manifold gaskets so I replaced those, after replacing all those it now runs a million times better, but I got the same codes back and still dont have nearly as much power as I used to and you can tell there is still a miss or something, it still hesitates a little bit when partial throttle, and seems that randomly I get all power back for a short amount of time. Another wierd thing that confused me was i pulled the wires at the coil to see if i was getting spark to all cylinders and the first day when i pulled the passenger side wires it made no difference in idle, now today after i replaced all of that, the passenger side wires made a difference, and the driver side dont. My next thoughts were to clean maf check for more vacuum leaks, change pcv, change spark plugs and wires, but I have no money at the moment haha so that will have t wait a couple days. Does anyone have any idea what could cause this damn problem, It doesnt seem to make any sense to me. Oh and I used 4 low today and it is the most badass feeling going from a 2wd auto to 4wd 5speed haha.
I guess I am asking for any other possibilities but im pretty sure its the harness and if so what would be the best way to go about replacing it, all the ones at the junkyard are already hacked up ufortunately.
Thanks, Chase