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Old 03-31-2013, 11:58 AM   #1
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any thoughts

I have a 93yj 2.5 I have no power to the coil I put a new switch in and still nothing

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Old 03-31-2013, 12:11 PM   #2
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Hello friend!

Need a little more detail in your post. There are many switches, relays and sensors on these old rigs.

Also need to know if it is an auto or manual trans. I just went through the no start problem on my 95 4.0.

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Old 03-31-2013, 12:18 PM   #3
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I replaced the ignition switch its a manual and the fues and relays all seem to be working
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Old 03-31-2013, 12:31 PM   #4
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What are your symptoms? Example engine cranks but does not start. Or engine won't turn over when I turn the key.
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Old 03-31-2013, 12:44 PM   #5
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It turns over fine it just has no power to the coil and its getting fuel
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Old 03-31-2013, 01:13 PM   #6
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Research CKS crankshaft position sensor, when it goes you'll get no power to coil. Don't get it confused with CPS camshaft position sensor, that is in the distrib.

There is a way to test the CKS, lots of info on the web about it. Pretty common problem on these old riggs. I have the 4.0 so I don't know where yours is located.


When mine went out my Jeep just died while driving then crank no start. It did not throw a code.


Have you looked for codes by turning the ignition on-off-on-off-on-off-on then wait for the CEL check engine light to flash. Have a pen ready to write the codes down. All the codes are two digit example Flash-flash-flash (pause) flash-flash-flash would be code 33. At the end of the codes it will flash a 55, that means End of codes.

If you need the codes let me know.
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Old 03-31-2013, 01:29 PM   #7
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I will give it a shot and see what happens
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Old 04-27-2013, 03:02 PM   #8
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Well I try a new crank sensor and still nothing
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Old 04-27-2013, 04:30 PM   #9
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turn the ignition on and try to start it at the solenoid. Use a button or bridge the two big posts with a flat head or jumper wire. Videos on youtube. Just be careful (neutral/E-brake)

If it is a safety swicth failure this will bypass it and the jeep will start. Either way if will help you narrow things down.

Did you check for codes?
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Old 04-27-2013, 05:17 PM   #10
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Whats that gonna do for power to the coil?

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