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-   -   Another no start YJ thread (https://www.jeepforum.com/forum/f12/another-no-start-yj-thread-4404003/)

4Low2G0 07-12-2020 05:47 PM

Another no start YJ thread
 
OK I'm looking for the resistance value for the ignition coil to test it.

It's a 93 4.0 AX-15 engine is bone stock

I was driving along yesterday about 2000 RPM in 5th gear and the Jeep shuddered a bit and lost power.
The engine died when I de-clutched and we coasted to the side, The engine cranks but will not fire.


I have fuel at the rail, I will check pressure tomorrow when I have a gauge.
Pump cycles when the key is turned on
The computer has power as checked by the check engine light method
Fuses are good checked with an Ohm meter.
I have 12V at the coil but spark is weak when checked at the coil.
Cap and Rotor are in good shape.
It will not fire with starting fluid

I suspect the coil is bad, but want to verify before I just throw parts at it.
Anyone had a coil fail like this?

So back to the point, I'm looking for an Ohm value for both sides of the coil if anyone has them.

Thanks in advance.

afhanson72 07-12-2020 05:59 PM

Iím not sure of the value but my 94 did the same exact thing and it was the coil.


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4Low2G0 07-13-2020 05:31 PM

So, just to close this thread, fuel pressure checked out good, so I pulled the coil off could see it looked burnt.

Went and grabbed a replacement, put it on and the Wrangler started right up better than ever.:thumbsup:

never had a coil fail like that.


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