Question about 1988 Jeep Wrangler

1 Answer

No spark went to start the jeep two days ago but it didnt i have power to both sides of the coil but no spark changed coil and pickup still no spark what else could it be

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I have the same problem. Put a test light on the coil leads, positive side should pulse, negative side should be steady. If no pulse on positive side, check your Crank position sensor. If not steady on negative.... thats my problem... lol. You can jump from the battery to the negative side to keep it running, then that is exactly what I am dealing with and cannot figure it out.

Posted on Aug 30, 2008

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Why wont it start


Yes, it could be. The crank sensor is responsible for a lot of jeeps not getting spark. First check if the green/black wire to the coil has voltage with key on. That is the primary current to coil. If voltage there, it could be the crank sensor. If no voltage to coil with key on, then problem is that computer is not sending power to the coil. That will have to be checked-there is a relay involved-the Automatic Shut Down relay in the under hood fuse-relay box.

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I have a 95 jeep Cherokee I went to fill up as I was putting gas the jeep was running. Once it was full I turn jeep off went into store came out and it wouldn't start back up. Changed the coil nothing...


Could be the ecu in need of repair, not sending power to the coil. If there is no check engine light coming on, in the dash, with the ignition turned on, then it's probably the ecu.

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1996 jeep grand Cherokee will turn over but not start. weak spark. fuel at fuel rail. replaced PCM 1 month ago. replaced crank shaft sensor 3 months ago....


See if your getting spark at the ign. coil first (passengers side on that year) if you are change the crank shaft sensor making sure you mount it as close to the engine as possible so it never gives you trouble again.

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1 Answer

NO SPARK TO COIL


I have replaced the coil and the pickup coil under the distributor cap and I still do not get a spark to the spark plugs. The only thing I am suspicious of is both the positive and negative side of the coil light up brightly with a test light, it is my under standing that the negative side should not light up. Before my jeep stopped starting I had driven it into the garage and just turned the key off.

I have tested the coil on previous times when I have had car problems, that did not involve the coil and the positive side would light up brightly and the negative side might show a very almost non existing hard to see light. But now like I stated previously both sides light up brightly. The only other thing might be that I did something wrong when I replaced the pickup coil. It was also suggested that there is a sensor under the jeep near the transmission, that if it fails would cause the coil not to send current to the spark plug.

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Have you checked the computer for trouble codes ?
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I HAVE A2000 ASTRO VAN IT QUIT WHILE DRIVING. I TRIED TO START BACK BUT BATTERY WENT DEAD, SO I GOT A BOOST, IT WOULD CRANK BUT NOT START. I GOT BATTERY TESTED IT WAS NOT HOLDING ENOUGH CRANKING AMPS SO I...


The fuel pump pressure shoud be 55-61 psi . Check for spark by removing a ignition wire at a spark plug and put a spark plug in wire and hold to engine ground and crank engine , if no spark then remove coil wire at cap and repeat.If still no spark then coil , module,,crank sensor or pickup may be the problem.
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1 Answer

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3 Answers

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