STERLING STINGER Posted March 19, 2010 Share Posted March 19, 2010 this is for my 88 work truck i have been strugling with this issue for some time now as you probably all know I'm going to be patient with this thread and get all the info as possible cuz its about to go, I'm getting fed up of everything ALWAYS breaking here's the order and what happened: 1) truck wouldnt get spark, changed rotor,cap,plugs,wires 2) seemed to mess with relay switch for coil, 2nd from left, and it started so i figured it was just a bad relay or connection so i cleaned wires and replaced all relays 3) truck seemed to start fine now, so itook for a ride and it shut off as i was driving for only like 5 seconds, then i cranked it and it started 4) called buddy for info andhe told me to see if it was getting proper fuel so to test, i turned the key to start the fuel pump and pressed that "valve stem" type thing on the top of my engine towards the front and fuel poured out good 5) truck seemed to be fixed so i went to work, broke down again, no spark, or gas now 6) got towed to friends garage...thanks AAA, and they were all looking at it scratching their heads 7) i went to the drivers side and made sure that the ceramic connection for the fuel was good, and it fired up can i just splice that together and bypass the ceramic thing? done: 1) plugs that go to bottom of coil (2) have power, but shouldnt that plug that comes grom coil that goes to cap have power too? 2) brand new rotor and cap, plugs, wires put in 3) as i went outside today to check my coolant level, i tried to start truck and nothing again???? i messed with that ceramic thing and for the first time it seemed like there was no fuel instead of spark cuz it spuddered after i messed with that ceramic thing again. i know it seems like its that ceramic piece, but I'm not sure any help would be greatly apperciated and any questions you have for more info to help, just ask thanks Paul Link to comment Share on other sites More sharing options...
Red 1989 MJ Posted March 19, 2010 Share Posted March 19, 2010 I have similar problem, the motor cut and stop. If you don't have spark could be the coil, that was my case. I just swap it from my part truck, and the motor came back to life. :D Link to comment Share on other sites More sharing options...
XXLMJ Posted March 19, 2010 Share Posted March 19, 2010 The first thing i would do is get a fuel pressure tester and see what your fuel pressure is. Then get a spark tester and see if you have spark. Eliminate a couple problems. Yes to bypass the the ceramic resistor on you fender wall you jump the 2 wires together. Link to comment Share on other sites More sharing options...
STERLING STINGER Posted March 19, 2010 Author Share Posted March 19, 2010 Will check, don't have a fuel pressure tester, will get one somewhere, but the coil should have power on that tit that the wire goes on to the center of the cap, right? Link to comment Share on other sites More sharing options...
XXLMJ Posted March 19, 2010 Share Posted March 19, 2010 Well, it will have spark there. I'm not sure if you can use a meter on that part. Link to comment Share on other sites More sharing options...
Squeegy410 Posted March 19, 2010 Share Posted March 19, 2010 easy way to determine whether its spark or fuel would be just to use starting fluid. if it starts with starting fluid you have spark, if it dies afterwards you don't have fuel, if it keeps running it still may not be getting enough fuel, but its more likely getting too much and flooding out before you can start it. maybe thats helpful :dunno: Link to comment Share on other sites More sharing options...
STERLING STINGER Posted March 19, 2010 Author Share Posted March 19, 2010 It just startwd for me like norhing ever happened, whadda you dudes think? Do Coils do this? Link to comment Share on other sites More sharing options...
sinkrun Posted March 19, 2010 Share Posted March 19, 2010 Is this the one that you had the motor put in? After we did my motor we had no spark for 2 weeks replaced everything. Ended up being a boken soldered joint in the engine bays harness wire and yes it was a ground. I was really carefull with bending and twisting my harness during the swap and it still happened. Just a thought??? Link to comment Share on other sites More sharing options...
AmJay Posted March 20, 2010 Share Posted March 20, 2010 I've had this problem 3 different times on 3 different vehicles. None of them a Jeep, yet. It has always been the ignition control module in the distributor. Link to comment Share on other sites More sharing options...
1987Comanche Posted March 20, 2010 Share Posted March 20, 2010 Have you replaced the CPS in the bellhousing? My '90 went through a few no starting fits and this appears to have been the problem. Link to comment Share on other sites More sharing options...
STERLING STINGER Posted March 20, 2010 Author Share Posted March 20, 2010 Have you replaced the CPS in the bellhousing? My '90 went through a few no starting fits and this appears to have been the problem. i don't even have a clue what that is???? Link to comment Share on other sites More sharing options...
1987Comanche Posted March 20, 2010 Share Posted March 20, 2010 Crank position sensor. It's only a $30 part new but it's a pain to reach. If you look at the bell housing from the driver's side you should be able to see it. I tried the resistance test on mine and it passed but it still had an internal problem. Replacing it seems to have taken care of my no start issue. Link to comment Share on other sites More sharing options...
one_bad_MJ Posted March 20, 2010 Share Posted March 20, 2010 your cps and flywheel is dirty go get a can of brake cleaner and spray it on the cps from the engine bay it will get the cleaner on the flywheel and wash off the contacts when it starts let it idle and keep spraying it down there aso it washes off the flywheel contacts my 89 xj did that and i freaked until i read about the cps being dirty, a quick spray off and bam. its good as new i just cleaned my comanche too when i got it just incase o f it being dirty and not wanting to start Link to comment Share on other sites More sharing options...
STERLING STINGER Posted March 20, 2010 Author Share Posted March 20, 2010 i just cleaned my comanche too when i got it just incase o f it being dirty and not wanting to start ha! preventitive maintenance? Link to comment Share on other sites More sharing options...
Squeegy410 Posted March 22, 2010 Share Posted March 22, 2010 yes a coil could do that, but only if its not getting good ground from somewhere. and that could very well be the case sence when you drive stuff moves around. if you wanna test this i would start it and then wiggle stuff around and bounce wires etc around the coil/distributor. if it dies in one particular position you could find your problem right there. The reason it could be your coil is because without your coil the power being sent to the spark plugs isnt close to being half as much as it takes to spark one. The coil takes the electricity from the battery/alternator and condenses it into one powerfull surge to run the plugs. So your plug wires could still be getting power and lighting up a test light, but they could still not be getting enough. Link to comment Share on other sites More sharing options...
STERLING STINGER Posted March 22, 2010 Author Share Posted March 22, 2010 it hasnt done nothing since then.....couple days..no clue I'm just gonna wait until it does it again, then replace coil that i have in glovebox we shall see thanks Link to comment Share on other sites More sharing options...
Squeegy410 Posted March 22, 2010 Share Posted March 22, 2010 It could be the wiring to the coil and not the coil itself. If it still does it after you replace it i would check out the wiriing. also don't throw away the old coil just in case it is wiring... Link to comment Share on other sites More sharing options...
STERLING STINGER Posted March 23, 2010 Author Share Posted March 23, 2010 The wiring was all dirty under the coil, but i cleaned it up, it seems ok now??????? Link to comment Share on other sites More sharing options...
Squeegy410 Posted March 23, 2010 Share Posted March 23, 2010 if it does it again i would bet on it being wiring issues. any problem that comes and gos like that and has potential to be electric usually is :smart: i very honestly hope it simply doesnt do it again and you have the best of luck :cheers: i really hate to see somebody have that kind of trouble :( Link to comment Share on other sites More sharing options...
STERLING STINGER Posted March 23, 2010 Author Share Posted March 23, 2010 Thanks, like i said, i have a coil in the glovebox if it happens again...we shall see Link to comment Share on other sites More sharing options...
Squeegy410 Posted March 23, 2010 Share Posted March 23, 2010 If you do have to replace it check the old coil for rusty/eroded connecting points like for the hot and ground wire. Thats just to satisfy my curiosity about this predicimate :thumbsup: Link to comment Share on other sites More sharing options...
STERLING STINGER Posted March 23, 2010 Author Share Posted March 23, 2010 ok, ill check them Link to comment Share on other sites More sharing options...
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