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Old 10-13-2000, 08:55 AM
stevebfl stevebfl is offline
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
Each version KE has different meanings attached to the Duty-cycle IR values coming from the left side diagnostic port. Your year should give 70% key on engine off. If its a Ca version it should be 85%.

While running a fixed duty cycle indicates a code/fault. A 40% fixed duty-cycle would indicate a problem with the airflow sensor position indicator (B2). While running in closed loop the duty cycle will vary up and down as the mixture is corrected rich-lean. A properly adjusted car will have the oscillating duty cycle hovering around 50%. I usually bias my settings rich by setting mixture to a hover over 40%. It must be moving though to get a value otherwise a code is being set.
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