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Old 10-15-2012, 11:05 PM
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95dodgeV10 95dodgeV10 is offline
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Default idle problem 01 cummins

i have a 2001 cummins that has recently started throwing a fit. Every so often (more frequently as time goes on) when i first start my truck the rpms start to settle and then it starts idling rough shaking the truck and if i give it some throttle it wont get over 1000 rpms even at full throttle. then eventually it will die if i let it idle long enough. then if i let it die or shut it off and restart it its usually perfectly fine. it hasnt caused the check engine light to come on so far. it has 100 hp injectors edge programmer and a bd diesel full pump. could it be the fuel filter (mounted near the tank) needs changed, or air getting into the lines or something else? also just noticed tonight my intake elbow is cracked down at the flange and appears to have fuel residue around the crack which seems very unusual. not sure if that might affect the idle or is a different issue all together. Hopefully someone has some suggestions cause i dont have a clue.
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Old 10-23-2012, 08:35 AM
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Default

Fuel system is bleeding down at the cracked elbow replace it also if you haven't replaced the fuel filter in the last 15,000 miles replace it. Any air in the fuel system will cause it to run ruff & be hard to start the VP44 injection pump needs to have 15-17 psi at idle.
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