about 2 months ago my CEL code came up and it showed P0171 lean the mechanics replaced my MAF sensor, O2 sensor with a denso brand. After driving it for about 900 miles it came back on so I took it back and they told me to use a chevron full system cleaner which I did but that didn't help and it came back on after a few days. Next I replaced the intake manifold gasket with the OEM part which everyone tells me that works for them but it didn't. They did a smoke test and a fuel pump test on my car and said everything turned out fine. I noticed that every time they clear the code it usually comes back on after 2/3 days around a certain amount of millage not sure if thats going to help. This problem is getting really annoying and I'm tired of taking my car to the shop so many times. Should I try replacing the fuel injectors?
my last resort is taking it to the dealership hoping their advance "code scanners" will find the problems I'm just scared that I'm going to have to pay an arm or a leg.
my last resort is taking it to the dealership hoping their advance "code scanners" will find the problems I'm just scared that I'm going to have to pay an arm or a leg.