jmvb
Well-Known Member
- Joined
- September 19, 2015
- Messages
- 198
- Reaction score
- 5
- Year, Model & Trim Level
- 1998 Explorer XLT
After an off road trip, and just after a hard muddy hill, with slipping wheels and some full gas throttle, I got the check engine light
Back in home, connect the scanner tool and read P1131 - P1132.
I know it means "Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 1"
and "Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 2"
The thing is, all my o2 sensors are new, and also the upper and lower intake orings
I performed again the fog machine test, and no leak in the intake, but have a leak in the mid of the EGR valve and a little bit in the black knob to the IAC valve
Is time for a new EGR? also IAC?
Back in home, connect the scanner tool and read P1131 - P1132.
I know it means "Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 1"
and "Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 2"
The thing is, all my o2 sensors are new, and also the upper and lower intake orings
I performed again the fog machine test, and no leak in the intake, but have a leak in the mid of the EGR valve and a little bit in the black knob to the IAC valve
Is time for a new EGR? also IAC?