A p0171 on it's own is usually never a bad o2 sensor. You could still Change it as maintenance if you want to but it most likely will not solve the issue..........here is a good link explaining the code.Just want to update this, I believe the downstream o2 sensor fixed the po420 code but still have the po171.
Any1 got any advice?
had a feeling most people would jump to that conclusion.. I already replaced the hose and valve bout a year ago. Its not a vacuum leak and because of that, it kinda has me stumped. I feel like I've checked everything. I haven't done the fuel filter but it has been done within the last 30,000
Any1 know how to tell if the MAF sensor is shot or not?
To change the fuel filter back you car onto carramps. pull the fuel pump relay or fuse and start the car until it stops, on my 2002 the filter bracket was held onto the body by 1 bolt then the filter was held in the bracket by one bolt. look at the clips carefully and you will see how to disconnect them.I have a replacement filter here.. guess its from the previous owner. I read the directions over fuel filter replacement and I suppose I'll give it a try. Gonna do that and spray the MAF sensor with cleaner. We'll see what happens.
oh and with 4,000 posts you should have a more detailed signature about your carI have a replacement filter here.. guess its from the previous owner. I read the directions over fuel filter replacement and I suppose I'll give it a try. Gonna do that and spray the MAF sensor with cleaner. We'll see what happens.
No sawzall?Thanks for the input fellas. I didn't get to doing the filter today. Took us 7 hours to replace rear leaf springs on a 89 ranger. Hell of a day. We'll see what tomorrow brings.