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Unread 10-23-2011, 05:34 PM   #1
ApocalypseJeep
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1993 YJ Wrangler 
 
Join Date: Mar 2011
Location: Reno, Nevada
Posts: 75
Strange New Starting Issue

So, recently over the last couple of weeks when I go out to start up the rig in the morning it stalls out on the first start up. What I mean is when I crank the motor, it starts fine, then drops in revs and sputters out untill it dies. When I restart it it runs fine. Then for the rest of the day, any time I restart it, no problems at all. So for the last week when starting it, I give it a light rev to keep it from stalling and it's fine. All vaccum lines are new, and I'm not getting any trouble codes.
Has any experienced these symptoms before, to find out what the problem was later? It runs and drives fine, just that little issue in the morning. Any ideas? My guess it's a fuel issue, but I could be wrong.

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Unread 10-24-2011, 07:33 PM   #2
ApocalypseJeep
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1993 YJ Wrangler 
 
Join Date: Mar 2011
Location: Reno, Nevada
Posts: 75
Really, no one has ever heard of these problems? Wow, hard to believe.

BUMP!!!!!!
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Unread 10-24-2011, 08:44 PM   #3
kloppk
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1992 YJ Wrangler 
 
Join Date: Oct 2006
Location: Massachusetts
Posts: 2,693
Could be a fuel delivery issue.
Check the fuel pressure at the fuel rail to see if it's within spec.
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Unread 10-24-2011, 09:39 PM   #4
dodger889
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1989 YJ Wrangler 
 
Join Date: Jan 2009
Location: mi
Posts: 4,162
Check the connectors at Cam Position Sensor and Crank Position Sensor. Pull them part and check for corrosion. Then the other has been mention above.
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A 89 yj with a 4.0 aw4 sye out of an 92xj. Now the hard part is done time to get it up in the air just a bit. Working on 8.8 with 3.73 and lsd for the rear. and new D30 hp with 3.73 .
For those who have not figured this out I'm old school but can handle the new too.
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