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Unread 09-12-2014, 03:16 PM   #1
BRose1133
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1998 TJ Wrangler 
 
Join Date: Sep 2014
Location: Hendersonville, TN
Posts: 3
'98 TJ decided to quit

Hello Jeep pros. After coming of the interstate, my Tj started to sputter and backfire at lower rpm's. As I increased rpm's it would smooth out. But problem continued as I gave it gas and I barley got home by keeping rpm's above 2000. After it sat for a while it will not start at all. What gives & any suggestions??
Thanks for a 1st time poster..

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Unread 09-12-2014, 05:54 PM   #2
onemorejeep01
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2001 TJ Wrangler 
 
Join Date: Aug 2013
Location: Brownsville, TX
Posts: 57
Have you checked anything yet? Plugs, wires, cap, ect? Welcome to JF btw
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Unread 09-13-2014, 09:02 PM   #3
saxart
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1999 TJ Wrangler 
 
Join Date: Sep 2006
Location: Wisconsin
Posts: 222
My Jeep will run like that if the battery is low or dead. I'd start there with the easy stuff first
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Unread 09-14-2014, 07:58 AM   #4
Warhound
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1997 TJ Wrangler 
 
Join Date: Sep 2014
Location: Edmond, Oklahoma
Posts: 23
does it crank but not start?
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Unread 09-24-2014, 02:01 PM   #5
BRose1133
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1998 TJ Wrangler 
 
Join Date: Sep 2014
Location: Hendersonville, TN
Posts: 3
Does crank, but not start.

Thanks for the replies to my question. Like I stated it was running, now it's not. I have been able to determine that it Is getting fuel. So I assume it's a firing issue. I have checked all connections & all seem to be correct. After it sat for a week it Almost did fire. But not quite. Where should I start my next level of troubleshooting?
Thanks again,
BR w/ a '98 TJ

btw, should all of this be part of a Forum or is a Thread the correct approach?
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Unread 09-24-2014, 02:21 PM   #6
Oldjeepman
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1999 TJ Wrangler 
 
Join Date: Apr 2007
Location: Nebraska
Posts: 224
Get your battery tested..mine did this ran fine to the store then would not start until jumped then have to rev it to get home,would not idle...replaced the battery ..
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Unread 09-25-2014, 10:06 PM   #7
BRose1133
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1998 TJ Wrangler 
 
Join Date: Sep 2014
Location: Hendersonville, TN
Posts: 3
Ok, here is an update. I tried by replacing the CPS. Still no spark, so no start. Checked all spark plugs and connections. Battery in good shape. Any suggestions for next steps?
Thanks...
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Unread 09-26-2014, 01:08 PM   #8
JStMarie
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2006 TJ Wrangler 
 
Join Date: Jan 2008
Location: Boston, MA
Posts: 1,242
What made you decide to replace the CPS, and was it replaced with an OEM unit? How did you determine you have no spark? How did you determine the battery is in good shape?

You have to understand, for 1/2 the posts on here we are dealing with people convinced it isn't this thing or that thing but have done no actual diagnosing to prove that out. Then it turns out to be the thing that had arbitrarily ruled out. I'm not saying that's you, but we can't really know that.

It helps if you let us now what you actually did, rather than what your conclusions are with no detail as to how you arrived at those conclusions. Or, at least let us know your experience so we can have confidence those conclusions are sound.
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Unread 09-26-2014, 01:50 PM   #9
Jeepsr4me
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Join Date: Dec 2004
Posts: 4,845
Any codes? that would be my 1st step to not wasting money parts changing
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