It's referred to the "OBD-II Driving Cycle".
- Bernd
At 10:59 AM 09/27/1999 -0700, you wrote:
>Hey all, just wanted to know if anyones had this
>problem! A buddy of mine drives a '97 4X4 Auto. He
>took it in for emmisions insp. last week and failed
>miserably! The only mod he's done is a drop in K&N
>filter. They asked him if he'd disconnected the
>battery anytime in the near past and yes he had (can't
>remember why.) They told him that more than likely
>the computer had dumped some settings when he did this
>and that's why it wouldn't pass. They gave him a
>little instruction sheet that led him through a series
>of steps he had to perform while running his truck to
>make his puter "relearn" some emissions settings.
>Something like start it with AC on, run at a certain
>RPM in N for 1 minute, drive at a certain speed for a
>certain amount of time, accelerate WOT to a certain
>speed, etc... etc... (He's got the instruction sheet
>at home and is gonna give me a copy if anyones
>interested.) He went out on the road, did what the
>sheet said, came back and they retested his emissions.
> He passed with flying colers! Anybody been through
>this? Seemed kinda wierd to me!
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