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Unread 08-11-2012, 03:41 PM   #1
oracle5
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Join Date: Aug 2012
Location: , AR
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TJ Dying When Idling

I have a 2003 Wrangler Rubicon with automatic transmission I bought about a month ago. Its my first Jeep. I have a random issue that only happens while in gear(drive or reverse, happens more often in reverse and never when in park) the Jeep will idle low, the engine will rev itself and the rpms will bounce up and down between revs until it dies after 3-4 bounces.

I can't recreate it every time so it seems random. It never dies when up to speed but only at low speeds like when in reverse. It has 98k but the engine was replaced by the previous owner at 92k with a Jasper engine. It also has a new fuel pump.

I put some Seafoam in the gas tank hoping that fixes/helps the issue but haven't ran it all the way through yet. Any other ideas on what is happening? Thanks in advance.

First post by the way. Glad to be part of the forum.

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Unread 08-11-2012, 03:59 PM   #2
oracle5
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I forgot to mention. When doing the key dance trick I get no codes.
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Unread 08-11-2012, 11:00 PM   #3
Willcamp
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2006 LJ Wrangler 
 
Join Date: Oct 2010
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Mine does something similar, but since I have a stick it stays idling. It only does it when I have spent awhile in the low range. The last time it started doing this I put my code reader on it. The reader said 0 codes, but just for sport I had it erase the codes. Afterward it idled fine. It tells me that something is kicked that my reader won't pick up, but will at least clear. I know I can reproduce it just by going four-wheeling.
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Unread 08-12-2012, 09:37 AM   #4
Jerry Bransford
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2004 TJ Wrangler 
 
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Here's the answer I gave you asking the same question in your other thread... http://www.wranglerforum.com/f5/tj-d...ml#post2675613
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