So Bay Vetter
Well-known member
I got an OBD II scanner (Carchip) to check my '96 LT4. I've changed the fuel filter which made a dramatic difference but it still feels like something's a bit off (missing, starving, maybe shorting a plug wire, idunno). Anyway, the scanner interfaces with my pc and allows me to monitor 23 different performance parameters (only 5 at a time though). I'm looking for answers to some of my readings.
The voltage on my O2 sensor constantly fluctuates (like every 2 seconds) up and down the scale from .01 to.09 volts. It seems to have no relevance to acceleration or RPM. Is that normal?
At 5500 rpm my throttle position was only 66% open (running lean?). Seems like it should have been 75-80% - or is throttle position related to miles per hour and not rpm?
Also I had no error codes at all. Is that even possible?
Any engine gurus with info? Thanx!!
The voltage on my O2 sensor constantly fluctuates (like every 2 seconds) up and down the scale from .01 to.09 volts. It seems to have no relevance to acceleration or RPM. Is that normal?
At 5500 rpm my throttle position was only 66% open (running lean?). Seems like it should have been 75-80% - or is throttle position related to miles per hour and not rpm?
Also I had no error codes at all. Is that even possible?
Any engine gurus with info? Thanx!!