In a message dated 96-06-10 09:42:40 EDT, you write:
<< he system open loop function
mixture is liable to be a mechanized bad guess without it. If the
lambda input is floating down to 0V, the "computer" will think it's
way lean and will compensate by drooling gas.
Keep in mind that if your in open loop the computer doesn't look a o2
readings...
It is possible to get a
semblance of proper tuning -at some point or limited range- but only the
closed loop mode will hold things tight from idle to top end and load. >>
In my opinion, a bad o2 sensor will not cause such a rich condition, Coolant
temp sensor, Air/flow meter, or bad fuel pressure reg...
John P Spofford
Automotive Vocational Instructor
ASE, L1 Master Tech
ASE Master Machinist
Proff. Mech. Assoc.
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