BrainofJ
New Member
- Joined
- January 14, 2015
- Messages
- 4
- Reaction score
- 0
- Year, Model & Trim Level
- 97 Ford Explorer
97 Explorer 4.0 OHV (x engine)
Vehicle symptoms: approx 1-2 months ago, vehicle would start as normal & idle fine when cold, but would immediately miss/stumble when put in reverse or drive. I would pull forward a bit before exiting driveway & put back in park. Engine would return to smooth idle. I would then return to drive & exit driveway & all was normal for the remainder of the drive. Now (for approx. a week), the miss/stumble condition persists on the drive, especially under load at low rpm. Condition appears to be somewhat intermittent while driving. It will appear to have gotten better while driving at times, but will reoccur when stopping at a light & restarting or slowing down & then climbing a steep grade. Check Engine Light has never flashed or been present during this period. I had parts store scan for codes: (PO171 & PO174 lean bank 1 & 2) were the only codes present. Any thoughts given my unique symptoms?
Vehicle symptoms: approx 1-2 months ago, vehicle would start as normal & idle fine when cold, but would immediately miss/stumble when put in reverse or drive. I would pull forward a bit before exiting driveway & put back in park. Engine would return to smooth idle. I would then return to drive & exit driveway & all was normal for the remainder of the drive. Now (for approx. a week), the miss/stumble condition persists on the drive, especially under load at low rpm. Condition appears to be somewhat intermittent while driving. It will appear to have gotten better while driving at times, but will reoccur when stopping at a light & restarting or slowing down & then climbing a steep grade. Check Engine Light has never flashed or been present during this period. I had parts store scan for codes: (PO171 & PO174 lean bank 1 & 2) were the only codes present. Any thoughts given my unique symptoms?