Guys, I could use some advice on where to start looking for this problem. I had a BDTD with the outlook and didn't have any problems. I recently got an Smarty S-04 and have been running it on level 4 with the outlook. After a few weeks my truck started dying on me while driving it. Everything seemed ok then felt like someone turned off the key, dead. I would either stop and put it in park or coast in neutral and it would start but only after 3-5 seconds of turning over. My buddy said it sounded like a loose wire to do with the fuel or lift pump. when I got into it I rattled all the harness I could but nothing happened. I ran the DTCs and got back 2. Low voltage at lift pump and the one about the MAP sensor being open too long. I cleared the codes but it still did it. It's very intermitant, I checked the codes again later and had P0236 Turbo/Super Charger Boost Sensor A Circuit Range/Performance and P0628 Low Voltage Detected At The Fuel Lift Pump Relay. I cleared it again and reprogrammed to level 5. I thought it stopped but it still does it. From time to time, at WOT, it does feel like its starving for fuel and other times it just goes. I also noticed my outlook monitor screen flickers like its shorting out. I unpluged it while it was running and the data stayed displayed, not updating of course but was still on WOW. I haven't done anything else that I know of except for a stero amp. Is it possible this could cause something. I never lost 12 power, altenator, and I'm not sure how to check the inline voltages. Any ideas?

 

Code 0628 is the lift pump code. The lift pumps will fail and re-start a number of times before they quit once and for all.

Wiggling the wires and clearing the code does nothing for it.

It might be something else, but that is the code for a failed pump and you are overdue on an '03.

 

typical lift pump going out of service. Fix it right with a Glacier, AirDog, or if you must, a FASS

 

Thanks guys for such a quick response. I thought the same thing but wanted to ask. This is my excuse to get the airdog I've been wanting anyway.

 

see, it all works out in the end

just never, under any circumstances, get addicted. Modding diesels is like a drug, and probably more addicting