99 TJ Starting Issues - JeepForum.com

 
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post #1 of 3 Old 08-04-2013, 04:55 PM Thread Starter
ThePhakeMcCoy
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1999 TJ Wrangler 
 
Join Date: Aug 2013
Location: lincolnton
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99 TJ Starting Issues

When the engine is cold, my Jeep starts right away, but after it warms up and say I go into the store for 10 minutes and come back to crank it, it takes a while to finally turn over, or I cut the switch all the way off and turn it back on and it will fire right up. A buddy of mine, told me it was the fuel pressure regulator, as he has replaced his twice. I changed that and the issue is still there. I had the fuel pressure checked and it is okay.

Anymore ideas on what could be causing this? I was told possibly the crank sensor?

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post #2 of 3 Old 08-06-2013, 09:38 AM
PentiumJoe
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2013 JK Wrangler 
 
Join Date: Jul 2004
Location: Eastern N.C.
Posts: 54
I have a similar issue. Any advice on this would be appreciated.

2013 J/K Wrangler Rubicon
AEV 2.5 inch lift
35X12.5X17 Discoverer Tires
AEV Black Pintler Wheels
TruckLight LED's
AEV Differential Guard
Warn Premium Front Bumper
Warn (9000LB) Winch
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post #3 of 3 Old 08-06-2013, 10:23 AM
Jonny Jeep
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1997 TJ Wrangler 
 
Join Date: Feb 2007
Location: Manchester
Posts: 5,448
Something is getting heat soaked. Could be many things, bad contact at the battery, bad or loose positive/ground cables, bad CKP sensor, bad wiring splice. Start by removing the clamps from the battery terminals, clean the terminals and clamp contact surfaces till they are shiny and bright, and fasten them back up tight enough that they can't be shifted. If that doesn't make a difference check/clean the other ends of the battery cables. Hopefully it is something simple like dirty battery terminals/clamps.

Online factory service manuals and parts lists - http://www.jeep4x4center.com/knowledge-base/index.htm
If it doesn't work properly, look for the service manual link at the bottom of the page.
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crank sensor , starting issue , tj

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