Especially in one that has a tail! lol..hadn't see you posted in awhile, and I remembered a post from years ago...

GL getting u codes sorted out...

 

OEM tail: We are the unicorn of unicorns

How you been good sir? Haven't spent much time on Rennlist in recent years. I sold the 997TT, been busy starting a new business and playing with the R8
After 14 years of 993 ownership - I'm not modding or tracking anymore.. There's not that many threads where I add value or have technical questions.

But it's good to come around from time to time and see old friends!

 

If it were me, I would want to know what the above indicators mean, prior to trying to reset flags that are obviously not resetting?

Non-Porsche diagnostic code readers do not display all the codes that could be thrown in your car. This is a known fact. As a suggestion, maybe you need to find an indy with a PST-2, Hammer, PIWIS, or even a Durametrics diagnostics tool, and have the car diagnosed properly and completely?

 

This has never failed me. The last line of the instructions is critical and is the most difficult part. Good luck.

BMW drive cycle for 993

Start engine, let idle 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. Then:

Idle in Neutral for 5 mins. (manual trans.)

Idle in Drive for 5 mins. (Tiptronic trans.)

During the drive cycle, do not exceed 3,000 rpm or 60 mph.

 

Cela m'a jamais manqué . La dernière ligne des instructions est critique et est la partie la plus difficile. bon chance.

BMW cycle de conduite pour 993

Démarrez le moteur , laissez inactif pendant env . 2 min , 10 sec .

Accélérer à 20-30 MPH , Maintenir une vitesse constante pendant environ 3 min , 15 sec .

Accélérer à 40-60 MPH , Maintenir une vitesse constante pendant environ 15 minutes .

Ralentir et venir à un arrêt . Alors:

Idle à Neutre pendant 5 minutes . (trans manuel. )

Idle dans le lecteur pendant 5 minutes . ( Tiptronic trans . )

Pendant le cycle d'entraînement , ne pas dépasser 3000 tours par minute ou 60 mph.

 

I did a little research and remember from previous years, the flags do not go solid one at a time. When the drive cycle is done properly, they all go solid at once. There is no actual fault or problem.

I think the problem I've been having from the last two night is one of two details:
1) Backing up after idle to get underway.
or
2) Using the cruise control.

Tonight I will give it another try and I won't do either of those two things.

wish me luck.

 

Good luck, brother!

Yeah, I never did either of the two things you listed.

1) Backing up after idle to get underway. or
2) Using the cruise control.

Probably more importantly, the cruise ctrl. Modulate everything via the accelerator pedal.

As you well know...Lots of info posted on drive cycles...

 

Whenever I need to SMOG I've undertaken the agreed drive cycle with my Innova reader plugged in. You can literally observe in real time the flags reset. if you take each step and stay in that range until that flag goes green it should literally take you one drive cycle to get this done. I seem to recall my reader was like $80 a decade ago.....money well spent no further guessing or black magic required.

 

My Actron CP9580 produces the same results! I can literally watch the flags go to completed, as/if I successfully perform each of the drive cycles...

 

Don't think so.

Read here under "Porsche 993 Cycle Flag Basic":
http://www.systemsc.com/codes.htm

The problem that most don't understand is that if the engine is stalled or shutoff
before a successful "trip" (driving cycle) is fully completed, i.e. all six tests,
that driving time was totally wasted. Most 993s require a minimum two uninterrupted
trips, with the '96 requiring three trips. Without use of a Porsche factory tester, one
never knows when a successful trip is complete. A generic OBDII scanner will ONLY
indicate the setting of the monitors when ALL trips are complete. Furthermore,
without the Porsche tester, successive trips must be done after the engine fully cools,
i.e. SAI test, requiring a minimum of two days driving effort.

 

Yes Loren thank you. You are correct you don't see it's complete until the final one is green but in the last 13 years I've owned my 97 that last one has always been the only one I've had to deal with and so for my comments above I have indeed been able to observe my flags go green in real time as I've sat idling at the end of the drive cycle

 

3 weeks ago in my '96, I followed this to the letter, being very careful not to exceed the mph and 3000 RPM, and all my codes reset during the 40-60mph 15min portion.

 

good luck tonight, B-Line

where i live i would have 0% chance of being able to follow this procedure successfully

 

I did it again for the 4th time on Thursday night.. Flags did not reset.

But it was the first night I did it without the use of Cruise Control.

I'm going to give it another try cause sometimes it takes two runs to clear the flags. I'm going to make the assumption that the previous 3 runs did not work or even help or count because I used the cruise control.. So I've only had one run done properly and hopefully tonights second (but really 5th) attempt should clear it.

At least that's the narrative I'm selling myself.. lol.

I also haven't been driving the car much.. It's possible my 993 is punishing me for lack of use. Maybe I should give her a good canyon blasting... Let her sit and cool down for 4 hours and then try it.. Cause we all know.. 993's don't like to sit still.

 

The procedure can be interrupted. If I can do it in the heart of Hollywood, you can do it anywhere.
In other words, if you come to a stoplight it's okay. If you have to brake and start again.. it's cumulative. As long as you don't break the 3000 rpm or 60mph rule, you stay in the programming zone.