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Old 03-19-2014, 12:47 AM   #1
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Stalling at random times

Hey everyone, this is my first post on here so hopefully I got this in the right spot. My girlfriend has a 2003 2.4 Wrangler SE. From what I read online it seems to be the TJ but maybe someone could explain this to me since I'm very new to the Jeep world.

The car has been relatively well kept. I noticed when she is on the highway the change between gears is not smooth, it starts shaking as if it was going to stall when being rev'd around 2k rpm. Then her transmission shifts down one and revs around 4k, all while pressing on the gas. There have been several occasions where her car will stall when she comes to a stop. Once it stalls the car will not turn on for a few minutes although you can hear the engine turning.

I have done a lot of research online and from my personal car knowledge it seems to be a fuel problem or transmission problem. I was hoping someone who knows more about jeep could help inform me of what this is. She brought her car to the shop twice and they said nothing was wrong...No codes are tripped when hooked up to a scan gauge.

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Old 03-19-2014, 12:52 AM   #2
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What do you mean "shifts down one and then up?" Is it a manual or automatic?

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Old 03-19-2014, 01:01 AM   #3
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It's an automatic with 88k miles. When on the highway, her car will go from 3k rpm to 2k then down shift and jumps to 4k almost 5k. It also has that same trouble when taking on hills. It hadn't done this in the past, but not sure if this relates to it stalling.
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Old 03-19-2014, 01:15 AM   #4
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Maybe the crankshaft position sensor. It's also called the speed sensor in the factory service manual. (Reads RPMs) I do not know much about autos at all. Just throwing out an idea. If it is it they are super easy to change. Hopefully someone with more auto knowledge chimes in. If not it wouldn't hurt to bump your post in the morning when more people are on. Good luck. Oh and TJ's were made from 1997-2006 I think. The jeeps prior were YJ's with square head lights and the new ones they make now are JK's.
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Old 03-19-2014, 01:29 AM   #5
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Thank you Majnoon for your help! I will read more into the crankshaft position sensor.
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Old 03-19-2014, 04:58 AM   #6
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Same thing used to happen on my 4cyl auto, i replaced the distributor cap and all the spark plugs and it stopped
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Old 03-19-2014, 09:43 AM   #7
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Quote:
Originally Posted by Mikebillek View Post
Same thing used to happen on my 4cyl auto, i replaced the distributor cap and all the spark plugs and it stopped
X2 sounds plausible - sounds like the engine is over compensating. Likely it's not giving even power through all cylinders.

This suggestion is cheapest and easiest to do. Good luck

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