I have a 03 dodge 3500 with a fass 150/150 a Dr performance predator, and a duel feed line. Most of the time it runs great. Every once in a while it will just not run right. It is drivable but a serious loss of power. It seams to be happening more often. Another thing I don't know if this is related or not, but since this has been happening there has been a few times that it has had a rough idle.

 

Yeah i know what your talking about mines does it every once in a while, symptoms are major loss of power with erratic idle and surging during the drive until it eventually smoothes it self out. I changed everything on the fuel delivery side, filters, liftpump(fass), added a pre filter before the pump and a 2micron after the pump with the standard filter in the cannister and still nothing! We need HELP.

 

Sounds like it might be the wire short problem. I've read on here that there's a wire that shorts on the a/c canister or something. Search for that. Apparently it can cause intermittent problems.

 

That thread is sticked at the top of this section.

 

YEP, i already checked for that wire grounding and made some safety pre cautions on it when i bought the truck. So it isn't the wire thats causeing my problems. but thanks for the info.

 

Did you do the key ON/OFF/ON three times to check for codes?

Erratic idle and surging, the first thing I would check is the FCA on the CP3. Also could be an injector issue if it's running rough.

MikeyB

 

yep, already did the code check. NO codes to be found, also used a hand held comp. checker and stil no codes. It doesn't run rough all the time it's when your trying to accelerate is when it bogs down like no fuel or boost then it clears up and drives like a champ? go figure huh? Thanks for your response though.