ERUSH97XLT
Well-Known Member
- Joined
- October 9, 2008
- Messages
- 236
- Reaction score
- 1
- City, State
- Omaha, NE
- Year, Model & Trim Level
- 01 XLT, 03 XLT, 13 XLT
Ok everyone! Sorry for the rather late reply. My explorer is still having issues, although some symptoms have changed:
1. Rough idle still exists
2. Driveability issues seem to have gone away after several doses of HEET for the past few months. I guess water got in the system. Thanks for that solution, Bubba!
3. My CEL is on now. Its the P0171 code: "System Adaptive Fuel too Lean (Bank 1)".
I've googled around for solutions to these issues. Here's what I've come up with:
1. Common causes for the P0171 are due to dirty MAF sensors and vacuum leaks. Based on my previous posts, I have no vacuum leaks and my MAF sensor was freshly cleaned.
2. Another cause I found is a faulty DPFE or EGR. Earlier, James seems to agree. This seems like a likely culprit becuase of my poor idle and previous driveability issues.
3. A "last resort" cause could be a malfunctioning oxygen sensor that "tricked" the PCM into thinking it was running lean. This seems unlikely (or is it?) because of my driveability issues.
I think my next course of action will be to replace the DPFE. It seems like the most likely cause of my explorer's problems. It's relatively cheap (~$50) and if its not the cause, I guess that's one less thing to worry about down the road.
What do you all think? Anything else come to mind? Any input is appreciated!
1. Rough idle still exists
2. Driveability issues seem to have gone away after several doses of HEET for the past few months. I guess water got in the system. Thanks for that solution, Bubba!
3. My CEL is on now. Its the P0171 code: "System Adaptive Fuel too Lean (Bank 1)".
I've googled around for solutions to these issues. Here's what I've come up with:
1. Common causes for the P0171 are due to dirty MAF sensors and vacuum leaks. Based on my previous posts, I have no vacuum leaks and my MAF sensor was freshly cleaned.
2. Another cause I found is a faulty DPFE or EGR. Earlier, James seems to agree. This seems like a likely culprit becuase of my poor idle and previous driveability issues.
3. A "last resort" cause could be a malfunctioning oxygen sensor that "tricked" the PCM into thinking it was running lean. This seems unlikely (or is it?) because of my driveability issues.
I think my next course of action will be to replace the DPFE. It seems like the most likely cause of my explorer's problems. It's relatively cheap (~$50) and if its not the cause, I guess that's one less thing to worry about down the road.
What do you all think? Anything else come to mind? Any input is appreciated!