Hey guys I've been having an issue lately with my truck. About a month ago my truck was cutting out at one point it wouldn't even crank, got it going took it to the shop found my driver side battery clamp cracked, replaced it aswell as the egr valve because I had a p0401 code. Valve was pretty gummed up. Now recently it started doing it again. It cut out and it started right back up then later that night drove it two blocks and died, turn the key on and my glow plug light stayed on and wouldn't crank, was checking over all my connections and nothing seemed to be wrong. And then randomly it seemed like everything reset and my injectors would buzz, glow plugs cycled and fuel pump kicked on and started right up and drove home. I replaced the pcm relay because one terminal looked to have gotten hot. Let her warm up in the driveway and she cut out twice but started right up. Checked over the connections again, replaced and cleaned both batteries, took it for a drive and no problems, later on started up again and let her warm up and cut out again, this time I got the p0401 code again. (Egr insufficient flow). I'm at a loss not sure where to keep going. Wonder if anyone would have any ideas. It's an 04 f350 with egr delete, banks turbo and intake, with edge juice with attitude tuner on level 3 never switched levels around. And some other add on and mods that could make the list go on.

 

If you have a delete, why are you worried about p0401? The egr needs to electrically work for fan operations, only a tuner can turn it off.

Whenever the glow plug light comes on, it's PCM commanded. So if you issues are indicating something like that, the PCM is probably got a ground or short issue.

Make sure your batteries and Alternator are up to speed or it will kill the FICM.

Have you checked your programmer, unload the tuner and disconnect it, see if it does it in stock form.