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HELP!!! 6.7 CR surging

Posted

Ok fellas I need help on a 07.5 2500 6.7. When you first crank the truck being cold, it runs fine. When it reaches operating tempature, it dies. Using diagnostic tool the fuel rail pressure is running about 7500 psi at idle cold as it warms up it drops to zero. After it hits around 2200 it dies totally. I've replaced the CP3, fuel rail, limiting valve, rail sensor, injectors, junked the AD165 replaced it with new Velocity 200 fuel system from Eric at Vulcan, new plumbing on low side! I am out of options!!!:banghead::banghead::banghead::banghead::banghead::banghead::banghead::banghead::banghead::banghead::banghead::banghead:I need help please and soon!!!

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Think its fixed for the time being. It has the Vulcan jeep liberty fuel upgraded module.

What did you find?Were you able to pinpoint it to a certain coolant temp?

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