05 occasional hard starting - JeepForum.com
 
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post #1 of 4 Old 12-24-2015, 03:43 PM Thread Starter
LA2
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Join Date: Dec 2015
Location: Orange City
Posts: 6
05 occasional hard starting

my 05 WK recently became hard to start occasionally. new battery and diagnostics show no problem. it will start fine for days then wont. cranks and acts like a fuel problem. after 3-4 tries it starts. changed the fuel relay with no difference. once started it runs perfectly. of course when in the shop it starts fine. I am new to the form but desperate to find a solution. I will check back but if you know of this problem please email me lad@ladart.com

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post #2 of 4 Old 12-25-2015, 06:59 AM
RCS1300
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2005 WK 
 
Join Date: May 2014
Location: Stamford
Posts: 694
Connect an oscilloscope to the crank and cam sensors and check to make sure that they are operating correctly. Also, connect a fuel pressure gauge to the fuel rail and see if the fuel pressure is within specification.
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post #3 of 4 Old 12-25-2015, 08:50 AM Thread Starter
LA2
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Location: Orange City
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I know the fuel pressure was checked but thanks for the tip on the crank and cam sensors - will try that
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post #4 of 4 Old 12-25-2015, 07:44 PM
92JEEPWRANGLERY
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1992 YJ Wrangler 
 
Join Date: Jul 2009
Location: Chattanooga
Posts: 111
Sounds exactly like the symptoms on our 05 5.7. I put a fuel pump in it and all is well!
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