Michael7S
New Member
- Joined
- Jul 26, 2022
- Messages
- 3
- Reaction score
- 2
- Points
- 3
- Location
- Santa Cruz, California
- Vehicle Year
- 1997
- Make / Model
- Ford Ranger
- Transmission
- Manual
It's like my Ranger knows I'm getting close to the smog check station!
My 1997 Ford Ranger 2.3L 4x2 throws P0135 & P0141 simultaneously while driving to clear the monitors for test. Usually fine for 3-12 miles (slightly rough idle), then boom.. both codes.
So I installed two new O2 sensors, confirm 4.n ohms for each heater, and confirmed 12v through fuse 20 (light blue/orange wire), confirmed PCM switched ground at both sensors. Wires appear unscathed.
I clear the codes, drive 3-12 to clear readiness monitors.. and within a mile of the Smog Check station.. it then throws P0135 & P0141 simultaneously.
What would you check next?
Thanks,
-Michael
P.S. If it matters, this is a manual five speed with about 150K miles
My 1997 Ford Ranger 2.3L 4x2 throws P0135 & P0141 simultaneously while driving to clear the monitors for test. Usually fine for 3-12 miles (slightly rough idle), then boom.. both codes.
So I installed two new O2 sensors, confirm 4.n ohms for each heater, and confirmed 12v through fuse 20 (light blue/orange wire), confirmed PCM switched ground at both sensors. Wires appear unscathed.
I clear the codes, drive 3-12 to clear readiness monitors.. and within a mile of the Smog Check station.. it then throws P0135 & P0141 simultaneously.
What would you check next?
Thanks,
-Michael
P.S. If it matters, this is a manual five speed with about 150K miles