jdog Posted February 29, 2020 Share Posted February 29, 2020 With the wires plugged in, if that's the case you've got a short and a bad fuse link Stock 1988 swb 4.0 ax15 np 231. Link to comment Share on other sites More sharing options...
jdog Posted March 1, 2020 Share Posted March 1, 2020 disconnect the switch and the fuseable links, ohm from the red wire on the ignition switch to each fuse link separately, if you just ohm the pack it will show all of them, it should only ohm out to one green one. all others should not have a reading. you will have to do this with the battery disconnected. if none of them read, start tugging lightly at each fuse link, if one starts to give its bad, don't force it., once we've figured out that we can figure out why it blew Link to comment Share on other sites More sharing options...
BoneheadJeeper Posted March 1, 2020 Author Share Posted March 1, 2020 13 hours ago, jdog said: disconnect the switch and the fuseable links, ohm from the red wire on the ignition switch to each fuse link separately, if you just ohm the pack it will show all of them, it should only ohm out to one green one. all others should not have a reading. you will have to do this with the battery disconnected. if none of them read, start tugging lightly at each fuse link, if one starts to give its bad, don't force it., once we've figured out that we can figure out why it blew This is what I'm working with. This is the only terminal that gives me a reading. So I'm assuming this is the culprit. I'm not good at electric diagnosing. Link to comment Share on other sites More sharing options...
jdog Posted March 1, 2020 Share Posted March 1, 2020 does your black lead go back around the mirror, attached to another wire then back to the fuse link? also 45 ohms is a lot of resistance, ohm from the red wire to ground and then from the green wire to ground. Link to comment Share on other sites More sharing options...
jdog Posted March 1, 2020 Share Posted March 1, 2020 also your doing good, it gets frustrating but your close Link to comment Share on other sites More sharing options...
BoneheadJeeper Posted March 1, 2020 Author Share Posted March 1, 2020 Yea my lead isnt long enough to go from red to the fuse links. I ohmd the wire that I'm using, its good. But I wiggled some wires around and the resistance changed. Red to ground and green to ground show no resistance. Link to comment Share on other sites More sharing options...
jdog Posted March 1, 2020 Share Posted March 1, 2020 as 0.0 or ol? Link to comment Share on other sites More sharing options...
BoneheadJeeper Posted March 1, 2020 Author Share Posted March 1, 2020 It went anywhere from 100 down to 7.7 ohms, to nothing then back to around 40ohms Link to comment Share on other sites More sharing options...
jdog Posted March 1, 2020 Share Posted March 1, 2020 we are on the correct wire then, if your reading for red to ground and green to ground is 0.0 ohms you've got a short to ground, if it shows ol its good and just the wire is open between the green to red. Link to comment Share on other sites More sharing options...
BoneheadJeeper Posted March 1, 2020 Author Share Posted March 1, 2020 7 minutes ago, jdog said: we are on the correct wire then, if your reading for red to ground and green to ground is 0.0 ohms you've got a short to ground, if it shows ol its good and just the wire is open between the green to red. Where might I find this short to ground. I almost sold this thing yesterday because I'm so irritated with it 😆 Link to comment Share on other sites More sharing options...
BoneheadJeeper Posted March 1, 2020 Author Share Posted March 1, 2020 So I cut the red wire and jumped it to 12v constant. Turn key and dash lights come now but no starter power. Link to comment Share on other sites More sharing options...
jdog Posted March 2, 2020 Share Posted March 2, 2020 Where might I find this short to ground. I almost sold this thing yesterday because I'm so irritated with it Unfortunately I can't tell you that, only run that wire for test purposes only there's a reason for the fuse linkStock 1988 swb 4.0 ax15 np 231. Link to comment Share on other sites More sharing options...
BoneheadJeeper Posted March 2, 2020 Author Share Posted March 2, 2020 17 minutes ago, jdog said: Unfortunately I can't tell you that, only run that wire for test purposes only there's a reason for the fuse link Stock 1988 swb 4.0 ax15 np 231. Yea I know, I have an inline fuse 20a. but if I did have a solid 12v at the Red wire, and that was the only issue, it should start correct? Link to comment Share on other sites More sharing options...
Jeep Driver Posted March 2, 2020 Share Posted March 2, 2020 49 minutes ago, BoneheadJeeper said: Yea I know, I have an inline fuse 20a. but if I did have a solid 12v at the Red wire, and that was the only issue, it should start correct? You can show 12v at the end of a wire which is not capable of carrying current. I suspect your fused links. Link to comment Share on other sites More sharing options...
BoneheadJeeper Posted March 2, 2020 Author Share Posted March 2, 2020 10 minutes ago, Jeep Driver said: You can show 12v at the end of a wire which is not capable of carrying current. I suspect your fused links. I cut the covers off the links. Took a pic for y'all to see. They all look good to me, granted idk what a good or bad fuse link looks like, but theres not any corrosion or anything loose or burnt.. Link to comment Share on other sites More sharing options...
jdog Posted March 2, 2020 Share Posted March 2, 2020 The fuse link is the wires them selves, that's just the splice point, ohm each one from the eyelet to that splice point. Disconnect the wires from the starter relay first Stock 1988 swb 4.0 ax15 np 231. Link to comment Share on other sites More sharing options...
Jeep Driver Posted March 2, 2020 Share Posted March 2, 2020 39 minutes ago, BoneheadJeeper said: I cut the covers off the links. Took a pic for y'all to see. They all look good to me, granted idk what a good or bad fuse link looks like, but theres not any corrosion or anything loose or burnt.. Unless the pic is deceiving me...........the one at your thumb is fried. Link to comment Share on other sites More sharing options...
BoneheadJeeper Posted March 2, 2020 Author Share Posted March 2, 2020 Ok, I'll look more into tomorrow. If it is fried, what's the next step? Replacing wire? Link to comment Share on other sites More sharing options...
jdog Posted March 2, 2020 Share Posted March 2, 2020 Replace with either another fuse link of that rating or a fuse holder with a correct rated fuseStock 1988 swb 4.0 ax15 np 231. Link to comment Share on other sites More sharing options...
jdog Posted March 2, 2020 Share Posted March 2, 2020 also what does that wire nut go to? Link to comment Share on other sites More sharing options...
BoneheadJeeper Posted March 2, 2020 Author Share Posted March 2, 2020 What would the correct rated fuse be? That should be a fuse link, previous owner did that. I noticed that when i bought it but had no idea what is was until all of this mess. I planned to fix it once i knew how. Link to comment Share on other sites More sharing options...
jdog Posted March 2, 2020 Share Posted March 2, 2020 Wonder if they fixed what made it blow, also depends on what size and color the old one wasStock 1988 swb 4.0 ax15 np 231. Link to comment Share on other sites More sharing options...
BoneheadJeeper Posted March 3, 2020 Author Share Posted March 3, 2020 After removing my washer fluid jug, I moved this mess down here, with key on, and the fuel pump fires up and dash lights come on, but no power to starter. I cut and tied together the fuse link that was thought to be burt before hand and no change. But i do plan on fixing it the right way with your alls help. With the key on, i can grab this harness and wiggle it around and the fuel pump will come on and shut off depending on the way I move it around. So I'm guessing my problem has been here all along. Can someone tell me how to take it apart and what to check? I tried to remove the clip but i feel like I'll break it if I keep pulling at it. *Ive also re connected the original wire that i cut when i jumped to 12v* Link to comment Share on other sites More sharing options...
jdog Posted March 3, 2020 Share Posted March 3, 2020 There's a 7 mm or 5/16 bolt in the middle of itStock 1988 swb 4.0 ax15 np 231. Link to comment Share on other sites More sharing options...
BoneheadJeeper Posted March 3, 2020 Author Share Posted March 3, 2020 1 minute ago, jdog said: There's a 7 mm or 5/16 bolt in the middle of it Stock 1988 swb 4.0 ax15 np 231. Ok, I knew there was a bolt in the middle of the one up higher. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now