so I read the code on my cheapy reader. It said p0171 system lean bank one. So far I've cleaned the maf sensor, changed out the bank 1 o2 sensor with a denso one. Also changed the intake manifold gasket and I'm still having issues. When I first changed the intake manifold gasket the check engine light turned off. And then then the next day the light turned back on. I'm having hesitation and very random times. Some days If will do it while driving, then days go by and if don't do it's very random. Injectors all seem to firing fine, I did the old school method of holding a screw driver up to them and listening and they all sound uniform. I do have a massive exhaust leak right where the header donut gasket is. I don't know if that could be causing the issue. The only other things I know to do is fix the exhaust leak and maybe change out to a new maf sensor and to check again for any vacuume leaks. Any help is appreciated.
2000 p0171
- Thread starter Blake
- Start date
