i have a 03 3500 stock with 215,000 miles was having problems with fuel rail pressure put a clamp on to fix that now really sputtering could only get to 20 mph. coaxed it home and showing code p-0628. will replacing the lift pump fix both? can you install a fass system and leave everything else alone? tried the map sensor cleaned it then test drove ran great for a min. then barely got it back home. tried to bump start it and no noise from pump. where is the cheapest place to get a new pump? everything is stock high miles really no need for crazy mods what benifits do the fass sys. have? alot of questions not alot of money

 

lift pump.......

 

0628 is the lift pump code. Talk to Glacier Diesel.

John

 

installed new FASS pump and still nothing. i think there is a problem with the ecm not sending power to the pump or a wire is bad. any sugestions?

 

Did you install a relay? Can you hear the FASS running?

John

 

installed the relay that came with the kit. i hot wire jumped the pump to the battery and it worked but when i reattached it to the stock wire i get nothing.

 

Either a bad relay, wired wrong or no ECM signal. I don't know how to check the ECM output, but maybe you could just check for voltage on the old lift pump hot wire when the key is on. Are you sure the relay is wired correctly? I hope your truck didn't stop originally because of an ECM problem instead of the lift pump.

John

 

the wiring was all set up from FASS real simple hook up unless they messed something up i searched for e relay last night but was unable to find one only one i found was a fuel heater relay does this also control the pump? where would i even find another ecm as i know my luck and thats probable the problem.