cranks but will not start. I replaced the ignition coil because of no spark?

1998 JEEP WRANGLER TJ
189,000 MILES • 4.0L • 6 CYL • 4WD • MANUAL
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RICK ECKERT
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1998 Jeep Wrangler TJ, cranks but will not start. I replaced the ignition coil because of no spark. Replaced the crankshaft position sensor, will not start. I've ordered an ignition camshaft sensor.
Aug 14, 2022 at 2:43 PM
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STRAILER
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So, it still has no spark? Have you run the codes? This guide will show you how so we can see what comes up:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

It sounds like you may have an auto shut down relay that is not working. Here is the location so you can replace it to see what happens. Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
Aug 15, 2022 at 9:37 AM
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RICK ECKERT
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I found the ASD relay switched out with another like relay and still no start.
Aug 15, 2022 at 12:33 PM
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RICK ECKERT
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Yes, no codes shown.
Aug 15, 2022 at 12:36 PM
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STRAILER
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If you turn the key on without cranking the engine over can you hear the fuel pump in the tank, come on for about 5 seconds? Also, have you checked for spark directly from the coil?

This video will help you:

https://youtu.be/baq_aEWNQ0Y

Have you checked all the fuses with the key on?

https://www.2carpros.com/articles/how-to-check-a-car-fuse

And this guide can help as well:

https://www.2carpros.com/articles/car-not-running-advanced

Please run down these guides and report back.

Aug 16, 2022 at 6:51 PM
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RICK ECKERT
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fuses good.
Aug 17, 2022 at 5:34 PM
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STRAILER
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have you checked for spark directly from the coil or at the spark plug?
Aug 18, 2022 at 2:18 PM
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RICK ECKERT
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Yes, I have.
Aug 18, 2022 at 4:54 PM
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STRAILER
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Okay, then we need to check for power and ground at the PCM because it sounds like the PCM is bad. Here is a guide that will help and the engine/PCM wiring diagrams below:

https://www.2carpros.com/articles/how-to-check-wiring

Check out the diagrams (below). Please let us know what happens.
Aug 19, 2022 at 11:16 AM
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RICK ECKERT
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I found the ignition coil to the right of the box was defective. I picked up another one and l have spark, engine turns over but will not start.
Aug 21, 2022 at 4:34 PM
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STRAILER
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If you spray starting fluid inside the intake will it run?
Aug 23, 2022 at 11:40 AM
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RICK ECKERT
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Thanks Ken. Since l had a bad coil right out of the box, l decided to check the distributor cam sensor. Yep, bad right out of the box, replaced it started right up. On the road again.
Aug 23, 2022 at 6:16 PM
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STRAILER
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Nice work, we are here to help, please use 2CarPros anytime. Bad parts are tough to deal with, good job hanging in there.
Aug 24, 2022 at 9:31 AM
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RICK ECKERT
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Thanks a million Ken, you were extremely helpful.
Aug 24, 2022 at 3:22 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.