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Old 08-09-2019, 10:31 PM
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Crankshaft position sensor swap results

Well I got my new Mopar CPS. Got it installed...turn the key and it just cranks like it did before. Next morning ran to auto store to get a spark check tool. While testing for spark I was alone and had to use my phone. First time multiple cranks didn't look like spark in the video. I tried one last time and caught it on video. Crank...crank...crank no spark then out of nowhere boom it starts and has spark. Sucker has me confused! Drove it all around the back roads and no issues...

Thinking computer didn't like it at first... coil going bad?

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Old 08-10-2019, 11:07 PM   #2
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It could be a lot of things but a simple one to check is the coil. They are known to show spark but not start. The spark is apparently too week to ignite the fuel. Could very easily be intermittent at first.(?)

Here is a link with photo.


http://www.jeepforum.com/forum/f9/97.../#post34552521

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Old 08-11-2019, 11:14 PM
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Quote:
Originally Posted by RUBI 4 MY MRS View Post
It could be a lot of things but a simple one to check is the coil. They are known to show spark but not start. The spark is apparently too week to ignite the fuel. Could very easily be intermittent at first.(?)

Here is a link with photo.


http://www.jeepforum.com/forum/f9/97.../#post34552521
y

Yeah Jeep seems to be running fine now but planning to grab another coil and keep it in the center console just in case.
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Old 08-11-2019, 11:18 PM
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Vid I caught of it. This was the Thrid vid. First two no start.
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