celsoglima
Member
- Joined
- September 29, 2008
- Messages
- 38
- Reaction score
- 1
- Location
- South MS
- City, State
- Hattiesburg, MS
- Year, Model & Trim Level
- 00 XLT 3.0L
I have a 2000 Ford Ranger 3.0 Flex Fuel (V) with 134K miles that has started running rough and thrown a few ODBII codes. Although the codes are O2 sensor related, I have been told by other forums members in the past that the codes alone don't tell the whole story, so I got a hold of an OBDII scanner with live data streams.
Would any of you guys know what the expected voltage readings on the pre-cat and post-cat sensors should be? This is what I noticed, and unfortunately I didn't note the voltage scale. Numbers were between 0 and 1:
Engine cold and at idle, the voltage on all sensors was all over the place.
Engine warm at idle: voltage on pre-cat sensors dropped down to near zero (< 0.02) and post cat voltage all over the place.
Would any of you guys know what the expected voltage readings on the pre-cat and post-cat sensors should be? This is what I noticed, and unfortunately I didn't note the voltage scale. Numbers were between 0 and 1:
Engine cold and at idle, the voltage on all sensors was all over the place.
Engine warm at idle: voltage on pre-cat sensors dropped down to near zero (< 0.02) and post cat voltage all over the place.
