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993 Drive Cycle

 
Old 10-11-2017, 07:26 PM
  #1  
doridori
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Smile 993 Drive Cycle

I just received a mail from California DMV that I need to do a smog check for my 1998 993 C2S.

The car was out of battery a while ago and I have recharged it.

I think I need to complete a drive cycle before bringing it to the smog check.

May I know the exact drive cycle that I need to complete?

Thanks
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Old 10-11-2017, 07:53 PM
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gonzilla
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There's a sticky called "the official porsche 993 old ii test drive" on the forum's main page that can help you.
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Old 10-11-2017, 08:07 PM
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nine9six
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Originally Posted by gonzilla View Post
There's a sticky called "the official porsche 993 old ii test drive" on the forum's main page that can help you.
Or, the official porsche 993 OBD II test drive. The old one works better though.

https://rennlist.com/forums/993-foru...est-drive.html
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Old 10-11-2017, 09:17 PM
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FGL28
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I did the one my mechanic told me to do. Drive for 26 minutes under 4K rpm but not letting it idle for longer than 60seconds. I passed my test 4 times that way.
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Old 10-12-2017, 01:59 AM
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I followed the OBDII test drive that @nine9six referred to and provided my notes in the thread on what I did to pass it. The seller spent weeks trying to get my car to pass. I got it to pass on my first try.
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Old 10-12-2017, 09:11 AM
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pp000830
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If you have Durametric it will display the status of the drive cycle so one may know if they met that requirement before the state testing.

Last edited by pp000830; 10-12-2017 at 09:28 AM.
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Old 10-12-2017, 11:13 AM
  #7  
chsu74
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Buy a bluetooth OBDII reader for less than $20 from Amazon and connect it to your phone to read readiness codes status. Plus now you have a tool to monitor your AFR and read CEL codes in the future. Cant get any simpler than that.
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Old 10-12-2017, 01:35 PM
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Originally Posted by doridori View Post
I just received a mail from California DMV that I need to do a smog check for my 1998 993 C2S.

The car was out of battery a while ago and I have recharged it.

I think I need to complete a drive cycle before bringing it to the smog check.

May I know the exact drive cycle that I need to complete?

Thanks
you'll probably get many responses, but I recommend you follow the "bmw" drive cycle process.
It worked EVERY time for me on my former 96 4S, but you typically have to do it twice.
twice on different days with a cold soak in between.

ps, do the final 5 minute idle in NEUTRAL

Now if were only so easy on my 360..................

good luck.
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Old 10-12-2017, 07:49 PM
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Detoxx
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Or send the offending ECU to be fixed permanently and never have to worry about it again
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Old 10-12-2017, 08:53 PM
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Jay777
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I followed the OBDII test drive that @nine9six referred to and provided my notes in the thread on what I did to pass it. The seller spent weeks trying to get my car to pass. I got it to pass on my first try.
Samarai, can you provide a link to that thread? I have emissions issues on my Zenith.
Thanks, Jay
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Old 10-12-2017, 09:33 PM
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https://rennlist.com/forums/993-foru...est-drive.html

I think I am the most recent post to that thread. Detailed out what I did to get my car to clear the readiness blocks.
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Old 10-15-2017, 02:35 PM
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HalfGerman
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Jay that sucks that CT doesn't have a no testing required on older vehicles. In Mass it is 15 yrs, NH is 20 yrs. Good luck.
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Old 10-15-2017, 02:46 PM
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Originally Posted by HalfGerman View Post
Jay that sucks that CT doesn't have a no testing required on older vehicles. In Mass it is 15 yrs, NH is 20 yrs. Good luck.
CT does its at 25 yrs. they are all about the revenue.
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Old 10-15-2017, 09:12 PM
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gonzilla
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Originally Posted by nine9six View Post
Or, the official porsche 993 OBD II test drive. The old one works better though.

https://rennlist.com/forums/993-foru...est-drive.html
DAMN YOU AUTOCORRECT!!!
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Old 10-15-2017, 11:31 PM
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There is one good thing about CT......you can go through emissions with as many as 2 monitors not ready. That's how I was able to "pass" with a car that pretty much has a permanent SAI fault.

SOMEHOW....while driving around after clearing the code, I got into a state where all monitors were ready EXCEPT secondary air. My shop guy said "Get to emissions RIGHT NOW" which I did, and passed. I don't remember the sequence of events that got me there but at least I have 2 years to figure it out. If there's a different "drive cycle" that could reliably put the car in that state, it would be a great SAI workaround in states with similar rules. I'm pretty sure it wouldn't work in CA, which I think only allows EVAP to be not ready. Don't know about other states.

Not much time left this season to figure it out, but I'll definitely pick it up again in the spring and post results.
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