|
Help - odd O2/frequency valve - resolved
Just wanted to follow up on this for the archives.
I think I mentioned it in one of my posts but, I had installed a cat converter early spring and I suspected the mixture was set up with the straight pipe (by the previous owner).
After some reading and little head scratching, I suspected that the system was running very rich with the cat installed and that possibly the lambda system just couldn't adjust the mixture to the stoichiometric area (50% duty cycle) due to the limited range of the of the control system.
I got the system working properly by adjusting the mixture 1/4 turn CCW (lean) while watching the frequency valve duty cycle. Once I turned the screw the duty cycle moved near 50% and started fluctuating.
Car runs great and the exhaust doesn't smell at all. It's rather strange to have the car idling in the garage and not smell anything!
Mike
|