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Old 05-18-2013, 12:30 AM   #1
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Engine sputter and check engine light

I recently purchased a 2004 tj (have a post about the transmission in another section of this site)

When I bought it a few days ago there was no check engine light. Yesterday the light came on for around 20 minutes.. I turned the jeep off for a few minutes then the light went off.

Today while I was driving the engine had a miss and a sputter then the light came on and is staying on. Any typical jeep problems that would cause this?

If your bored...check out my thread "bought new jeep transmission troubled" someone suggested I should have posted it here in the TJ section but I don't want to double post.

Thanks! !

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Old 05-18-2013, 12:34 AM   #2
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Sounds like a misfire with one of your spark plugs. Check your plugs and the wiring. But the most for sure to know would to get your CEL codes checked.

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Old 05-18-2013, 12:57 AM   #3
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Could anybody point me in the direction of a good "how to change plugs and wires thread?" I'd like to read other people's experiences about proper torque..best plugs and wires .. Things like that
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Old 05-18-2013, 01:18 AM   #4
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...found one that looks decent

http://www.getahelmet.com/jeeps/maint/sparkplugs/
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Old 05-18-2013, 01:24 AM   #5
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Is your engine a 2.5 or 4.0?
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Old 05-18-2013, 03:03 AM   #6
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4.0
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Old 05-18-2013, 11:05 AM   #7
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Before you go ant throw parts at it, find out what the code is to determine what is wrong. Turn the key off-on-off-on-off-on and the code(s) will be in the odometer window.
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2003 TJ, 33" BFG AT, 2" BL, 2" BDS spring lift, Truck Lite headlights, Homemade sunrider top.
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Old 05-18-2013, 06:02 PM   #8
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P0123 . Any idea what that means? Had no idea I could do this. Thanks for the tip!
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Old 05-18-2013, 06:11 PM   #9
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P0123 is (Throttle Position Sensor Voltage High Throttle position sensor input above the maximum acceptable voltage.) Look through this thread about that code http://www.wranglerforum.com/f5/what...tj-105149.html
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Old 05-18-2013, 06:43 PM   #10
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P0123 . Any idea what that means? Had no idea I could do this. Thanks for the tip!
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Old 05-18-2013, 07:36 PM   #11
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Ok.. So I read that its the throttle position sensor.. And this makes sense to me based on how the jeep feels.

Is this something I could tackle myself? Are they expensive? Any links to a how to guide?
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Old 05-18-2013, 07:39 PM   #12
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So its the tps based on what I've found. Is this an expensive part? Can I install it myself? Any helpful links ?
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Old 05-18-2013, 07:40 PM   #13
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Quote:
Originally Posted by EMTJEEP View Post
P0123 is (Throttle Position Sensor Voltage High Throttle position sensor input above the maximum acceptable voltage.) Look through this thread about that code http://www.wranglerforum.com/f5/what...tj-105149.html
Thanks for that!
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Old 05-19-2013, 12:49 AM   #14
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I'm also getting 1685. And when I look that one up it says its a bad key. I didn't realize they keys were chipped and I tried starting it with an un chipped key. Would this cause that error to continue to show up even after a day of using the proper key?

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