Originally Posted by Jim_K

Here is the procedure I followed (posted by ecobb993 on 10/18/03) under subject "failed california emissions".

Kary,

That was my entry in response to jstahmann's need to run through the "readiness cycle". Our ever diligent fed & state smog patrol made sure that their evil constituents don't try to fool them by reseting the emissions trouble codes and dashing to the inspection station for a quick read before they trigger again.

At the same time the OBDII cpu codes are reset, the "readiness codes" are also reset. The readiness code indicates whether each of the 8 system sensors have completed it's diagnostic check. So the inspection station doesn't see a trouble code but also sees that the readiness code is off (actually it reads more than "0").

Once the CE light is cleared the following readiness cycle can be followed to reset the code or you could drive the car for a while in a variety of situations that would allow each system to do it's thing:

Start engine, idle cold for approx. 2 min, 10 secs.

Accelerate to 20-30 MPH, Maintain steady speed for approx 3 min, 15 secs.

Accelerate to 40-60 MPH, Maintain steady speed for approx 15 mins.

Decelerate and come to a stop. Idle in gear for approx 5 mins.



Following the start engine phase the sequence of test conditions may interchange.

routine will be discontinued whenever:


Engine speed exceeds 3000 RPM
Large fluctuations in throttle angle
Road speed exceeds 60 MPH


Hope this helps y'all.

The route that I took did have some starts and stops in it, but as long as you follow the instructions not to exceed 3k rpm, don't make large throttle fluctuations and don't exceed 60 mph until complete, it worked (as least for me).

Good luck and let me know if there are any other questions.

I'll post some pics and details of my drive from BOS to ATL ASAP.

Regards.

Jim

Originally Posted by 911

I'd like to say thanks to Jim here because this is what I did with my 997.1 GT3 yesterday and it worked after the first attempt.

Thank you, Jim!

Originally Posted by systemsc

You did the easier Porsche, i.e. not a 993!