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I got a 2001 laramie. when i start it after a 4 hours or more down time it wont stay running unless i rev the engine to about 1500 rpms and hold it for 2 minutes. after that it will run fine. i have done a good tune up new plugs and wires plus tested all my fuel injectors. Could it be the o2 sensors or do i need to replace the fuel pump? i got no idea. any help will be greatly apprecieated
 

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It sounds like ur fuel pump there is a valve that when shut off holds the fuel in the lines if the valve is faulty the fuel runs out of the lines and back into the tank which makes it start as if it were out of fuel every time hope this helps
 
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