Hi, This is my first post and I really need help with my 2006 Rubicon 4.0.
CODES: P0171 AND P0174 FUEL SYSTEM LEAN
Issues
A very trusted mechanic said it was the PCM. So, I replaced it and I'm still having issues. He suggested something was getting too hot and sending the codes.
So, I started going down the list of possible causes and replaced several items.
Re-installed my PCM
Replaced
Issues that have gotten worse or the same
The crazy thing is that it does "ok" when driving during cooler temperatures or the rain.
Once I'm on roads that are warmer, the power loss increases.
Here is a list of all parts replaced:
CODES: P0171 AND P0174 FUEL SYSTEM LEAN
Issues
- Rough idle
- Misfires / Backfires
- Stuttering / hesitation while stopped
- Power loss while driving over 50 mph
- Will not start after it’s been running for awhile
A very trusted mechanic said it was the PCM. So, I replaced it and I'm still having issues. He suggested something was getting too hot and sending the codes.
So, I started going down the list of possible causes and replaced several items.
Re-installed my PCM
Replaced
- CRANKSHAFT SENSOR
- MAP SENSOR
- AIR TEMP SENSOR
- Rough idle
- Misfires / Backfires
- Will not start after it’s been running for awhile
Issues that have gotten worse or the same
- Stuttering / hesitation while stopped
- Power loss while driving over 50 mph
The crazy thing is that it does "ok" when driving during cooler temperatures or the rain.
Once I'm on roads that are warmer, the power loss increases.
Here is a list of all parts replaced:
DATE | PART |
08/07/24 | O2 SENSORS |
10/11/24 | FUEL PUMP |
10/11/24 | IGNITION COIL |
10/11/24 | SPARK PLUGS |
11/01/24 | TSTAT |
11/01/24 | COOLANT TEMP SENSOR |
11/07/24 | CRANKSHAFT SENSOR |
11/08/24 | |
11/12/24 | PCV ELBOW, GROMMET |
11/12/24 | MAP SENSOR |
11/12/24 | AIR TEMP SENSOR |