Shatcher0428
Member
- Joined
- Oct 17, 2021
- Posts
- 32
- Reaction score
- 21
Good morning!!! Hey guys I am scratching my head on this one. I am getting a P0171 bank 1 and when it does it i get a missfire. It does not do it all the time. Does not happen whenever it first starts, just whenever I have driven it a good 30 miles or so. It may not do it every time either. When it does it lacks power and check engine light flashes. Since i have had it, I have replaced, fuel pressure regulator, fuel pump, both Front 02 sensors, new plugs and wires, new mass air flow sensor, does have a cold air intake, engine was rebuilt about 50k ago. i am scratching my head on this one. Any help would be appreciated. Ah also really noticable at idle, but if really get on it, its usually smoothes out after a few miles and quits doing it???? I am stumped.