12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

no start when hot maybe ???

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Old 06-11-2009, 09:02 PM
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94 stock auto 4x4 does not want to start when hot , sometimes .most of the time it will . but if your 50 miles from home and have to be back asap your sol . sit for an hour or so and boom . it will take right off first flip????? i have switched relays ,flipped start solenoid ,swore ,only thing i have found that works is let it cool . its getting warmer outside not wanting to drive it . take your best guess i am out of ideas
 
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Old 06-11-2009, 09:12 PM
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next time it dose it leave the Key on after you try to crank it,( that is if it will crank) open the hood and see if you fuel shut off is in the up position. if not push it up by hand and try again, if it works then your Shutoff may be bad. Magnetic coils sometimes only act up when they are hot.
 
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Old 06-11-2009, 10:13 PM
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Beets i checked that ,its working. also cleaned all battery ends and grounds. still does it, but what has me is it doesnt do it all the time. cranks over realy fast,no start no smoke ,nothing not even a flutter.let it cool and start first flip????no stumble or anything
 
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Old 06-12-2009, 07:03 PM
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Same exact thing happened to me. Turned out to be the starter. I ordered the Larry B starter contacts and rebuilt my starter, no more problems. As a temp fix, mine would start if I climbed under and tapped the starter with something like a (insert tool of your choice to act as a hammer).
 
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Old 06-12-2009, 08:20 PM
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my friend had same starting issue but on nissan gasser and only would not start sometimes and only when hot.over winter it never acted up.we found that his ignition key had some kind of chip in it and was messing it up.he took spare key and it has been almost year no problem.if you have any security system i would try to disconect that to make sure good luck with your problem
 
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Old 06-13-2009, 02:33 PM
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Originally Posted by daveO
Same exact thing happened to me. Turned out to be the starter. I ordered the Larry B starter contacts and rebuilt my starter, no more problems. As a temp fix, mine would start if I climbed under and tapped the starter with something like a (insert tool of your choice to act as a hammer).
he said the starter would crank the Engine really fast. so the starter is working.
 
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Old 06-13-2009, 08:24 PM
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Originally Posted by Beets
he said the starter would crank the Engine really fast. so the starter is working.
Sorry, missed that part.
 
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Old 06-22-2009, 07:15 PM
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hey guys and gals it did it again today . what the heck is wrong with this thing . drove to work 58 miles turn it off try restart . starts first flip drive home 58 miles turn it off try restart cranks real fast no start . eat supper go back out turn key wait to start light goes out engage starter first flip its running sorry about being long since last post ,honey doooos
 
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