Quote:
Originally Posted by massmike
So Tony has been through this WUR in August of this year. He listed a warm control pressure of 52psi. I am wondering if my cheap gauge set is not 100% accurate, since I am reading 49-50Psi.
Also for my knowledge, does 1-2psi make that much of a difference to a CIS system?
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Remember, you have very a subtle problem which may be attributable to the control pressure being too low in closed loop.
Try changing it. You can always readjust it back.
The key point with your CIS system is once the O2 sensor is connected, the system becomes a closed loop servo, having positive feedback will cause
oscillations, i.e. surging. The solution to servo systems with positive feedback is to reduce the feedback, reduce the input signal (O2), the system signal gain,
or the feedback signal phase. It's not always a simple solution.