No spark

In one test it says replace resistance wire what is a resistance wire?

When engine was put in a black wire with white tracer that has another black wire spliced into it that has a large flat washer type terminal on it got grounded to the block! Well come to find out it’s got 12 volts going to it and I don’t know where it goes! My manual shows it as a high altitude ground but I think when it was grounded it fried ICM and who knows what else! Like I already stated I’ve replaced pick-up coil, ignition coil, ICM, ignition switch! I ran all tests you gave me and got to the replacing the wire with resistance and was unclear on if I’m supposed to cut wire out of loom and run a new one or what!

Thanks for your help it is much appreciated!

I was driving down the road and all of a sudden the jeep started bogging down then died. It is getting gas but no spark. I turn the key over and the coil will spark once but that is it and I have no spark out of the distributor. The coil and distributor pickup wheel gets its power from the Ignition Control Module so you think that could be the problem?

I tested the wires coming out of the module and the wires leading into the coil and they all tested fine both ground and hot so it should be getting power and the three wires going into the distributor. Two grounds tested fine and so did power wire. Like I said the coil will spark once when turning over but that is it and that doesn't happen every time. So I am guessing either the module or coil. What do you think?

Ok I had the module tested 6 times and all passed so I bought one anyway and it worked something must be wrong with their machine. Thanks for your help. I love this site.

No spark while cranking? Have spark traveling through coil and distriguator with just ing. Swicth on, when unpluging and pluging in power to primary side of coil, but nothing while cranking engine. Ran fine before restoreration 3 months ago. Did remvove computer on defroster ducting never pull steering wheel.

Hy bud thanks for the info I got the jeep fixed. The ground wire that runs from the pickup wheel to the module was corroded and setting against body and trying to run through the wire through the body and then through to the module so it wasns getting full signal to the pickup wheel telling it to pulse. Thanks again.

OK, I took out my test light, put the wire on the Negative terminal of the battery, and tested my Red Ignition Coil harness contact with the key on; I got a solid red light on my wire tester. While trying to start the Jeep doing the same test, I got a solid red light again.

Then I put the wire on the Positive terminal of the battery, and tested my Green ignition Coil harness contact with the key on; I got a solid green light on my wire tester. While trying to start the Jeep doing the same test, I still got a solid green light. However, I believe I'm looking for a pulsing/flashing green light on my wire tester when trying to start and testing the green coil contact.

Question, If when my Jeep was working last month, I could pull the key out of the ignition while driving down the road, would that have any significance to the problem I'm having now? Or, given I have tilt steering, and use it to pull the wheel down into my lap each time I would drive, could a wire have snapped inside my column and be creating this problem?

I don't have a voltmeter. I did get your message, but didn't see any wiring diagrams, but will look again.

Aside from the above, I have changed the Ignition Module, Ignition Coil, Distributor, Rotor, and Pick-Up assembly in the base of the Distributor all since this happened early last month. No luck starting to the point I re-tested as stated above.

Specs: 1986 Jeep CJ7, stock. No modifications; 258 Cu. In, 4.2 L, In-Line 6, 5 speed Manual.

Question, If when my Jeep was working last month, I could pull the key out of the ignition while driving down the road, would that have any significance to the problem I'm having now? Or, given I have tilt steering, and use it to pull the wheel down into my lap each time I would drive, could a wire have snapped inside my column and be creating this problem?

Hi I'm In the last stage of a 3year restoration of my 1976 Jeep CJ7 frame off. The PO had spent over 9k on power tran, I drove the jeep prior to dismantling it it ran great. I have almost everything back on all newly painted, and just a foot note the ground is correct. I have ground cables from Eng to frame Eng to fenders all sanded down metal to metal. I know how important ground is to a jeep lol.

Now for the problem, I have my new wiring kit installed from Painless my Eng turns over put now Spark from coil to distributor. If you take the coil wire that runs from coil to Dis cap there is sprak from the coil but not going in to the Cap

I have a 1986 Jeep CJ7; 258 cu. In, 4.2 L, 5 Speed manual, no modifications.

To date I have replaced the Ignition Module, the Distributor, the Rotor, the Ignition Coil, and even the pick-up assembly on the Distributor base. I removed wiring from the harnesses to look for breaks, but found none. Found a lot of splices taped w/Duct tape (Factory? I've had Jeep since new), and re-taped splices with electrical tape.
Before and after changing the above stuff I have removed a plug, grounded it and got no spark. (My Chilton’s Manual said not to test using Spark Plug #1, because it could damage the sensor inside the distributor, and I believe early on I may have. Could this have complicated maters?) I have also taken a test plug, put in the coil wire, and grounded it. The plug sparked once and that was it. That is why I'm chasing this J-Rod87; 1985 Jeep CJ7 No Spark thread; same symptoms, was hoping to find a broken wire.

I also took out my test light, put the wire on the Negative terminal of the battery, and tested my Red Ignition Coil harness contact with the key on; I got a solid red light on my wire tester. While trying to start the Jeep doing the same test, I got a solid red light again.

Then I put the wire on the Positive terminal of the battery, and tested my Green Ignition Coil harness contact with the key on; I got a solid green light on my wire tester. While trying to start the Jeep doing the same test, I still got a solid green light. However, I believe I'm looking for a pulsing/flashing green light on my wire tester when trying to start and testing the green coil contact.

Out of curiosity, could it be:
1) the computer under the dash; another thread suggested this;
2) burnt/compromised wires at one of the splices; on the single wire coming out of a splice, the wire is a little bumpy. In other words, could the insulation be intact and bumpy, but the wire beneath be pooched?
3) a relay; there are two 20/30A relays at the end of the wiring harnesses;
4) ignition switch; I have replaced a few years back, but not for this reason;
5) heavy gauge wire going from solenoid to starter;
6) anything else. I have looked for a fusible link, but can't find one anywhere. And I don't seem to have a fuse in the fuse panel under my dash that I could pull.
7) You've already said it is not caused by the Key Cylinder.

I realize you want me to do some tests, and I have done the above tests already, but I'm just curious how far this lack of ignition problem reaches, or what it implicates.

I will go do the 3 "bottle top" gas test, and get back to you. I will look to get a Voltmeter.