Hey there my name is james, i have an 03 4.7 dodge ram(manual) and dual fuel(propane). I drove it last night with no issues then this morning had a really long start issue and it died out on me once On my way to work. I put a odb2 scanner on it this morning and it threw me a p0335 code, p0300, and p0335 again saying it had 3 codes. The engine light was also flashing. I unpugged the crank sensor but the connections seemed good. Any help on a good place to start would be greatly appreciated. Thanks jim

 

When was its last tune up? Check fuel pressures. Specifically fuel pressure bleed down. You may have a bad fuel pump. P0300 is a random miss fire code. Crank and cam sensor could also be an issue. P0335. I think is one of those.