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brent92 05-22-2011 03:46 PM

Help!!! No Spark???
I have a 2002 jeep wrangler tj. I need help; it will not spark. I have replaced; plugs, wires, cap, rotor, modular (thing underneath cap), and coil; and it still will not create a spark. Just previosuly I had replaced the clutch in it and all that works well. However, i forgot to disconect the battery and a friend sparked the start while tightening bolts on the main. I have looked every where and everything is plugged in and and in tact. I am all out of ideas why it will not spark, motor just turns over and my coder reader comes up with no codes. Any one have any ideas?

eugenesonrisa 05-22-2011 05:48 PM

Weird... My 2002 has a distributor-less ignition.

Shelby427 05-22-2011 06:00 PM

Did you check every fuse? Both boxes? Fusible link on the alternator?

Do you have power to the coil?

Fatherof2 05-22-2011 06:25 PM

had the same problem a couple weeks ago...fuse 6 was blown because my o2 sensor on the downpipe was shorted to the exhaust manifold....maybe worth a look

jeepskala 05-22-2011 10:12 PM

check the fusses. i had the same problem. turns out either my crank positioning sensor (on the drivers top side of the bell housing) wasnt plugged in all the way or wasnt in all the way, or just happened to go bad as i did the clutch. i had one laying around and plugged it in and it started right up

go to advance auto parts or autozone and rent injector diod testers. and plug it into the plugs for the injectors and see if you are getting a injector pulse. (i wasnt getting a injector pulse or spark. ) which led me to the crank sensor.

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