Randy M '96 Silver 993

Mine was for the SAI CEL. The engine had major Carbon buildup. It has been flushed and I have about 13K miles with no CEL. Before the flush it was about every 200 - 300 miles

Good luck. I hope it is something easy.

FisterD

An Italian tune up will not correct the carbon buildup issue, if that is what the error is.

96C4S

So far it has corrected mine for now 3000 miles only time will tell ive learned not to baby the car. 3500rpm plus at all times.

trojanman

I had 85 miles since purchase when mine went CEL... in the shop now (on the dealer's nickel) trying to get it right. It's definitely SAI and the prior owner ( I learned after the fact) tried a lot of things (approx. $1k worth) to rectify with no success. I think I'm looking at a top end. Big time bummer.

Schnell 911

I will be getting my car back from detail tommorow evening. It goes up on jacks for diagnosis of CEL, short shift install and I will be hardwiring in my Valentine1. I will post the diagnostic trouble code and share any information I can gather, or I will asking for advise here! Thanks all for the responses in which I value.

kkim

Dannen,

Sorry to hear of your CEL problems with your new baby. Be sure to let me know when you're on Kauai next so we can get together for P-talk.

You will love the short shifter improvement.

Good luck!!

JasonAndreas

We need to educate Porsche dealers, independent mechanics and potential owners to check the readiness codes during a PPI. It might not catch all SAI problems but it will definitely help.

If your problem is more than a bad check valve then there is an electronic fix if you don't want/can't fix the real problem (valve guides).

fbfisher

There has also been a thread within the last year about a lower cost way to clear the ports. I'll see if I can find it to save you the trouble of slogging through a million SAI port threads trying to find it.

Arrwin

Has anyone read the last Excellence (June 2005)? On pgs. 52-56, the CEL problem is discussed and another method of clearing the passages was mentioned by John Williamson of Otto's. The process he uses is such: "He makes up some reservoirs by using old fuel-filter housings with new hoses attached to the bottoms, Then he removes the air-injection pump connection to the cam housing and connects his modified reservoir."

"He fills the reservoirs with BG Products, Inc. Induction System Cleaner (part #221) and leaves the reservoirs hooked up overnight. The next day, he reconnects the air-injection pump and drives the car. He says that after resetting the fault codes on teh OBDII system, the Check Engine line goes out and the car will pass a smog check".

He also goes on saying that he is offering the entire kit for $150.

Anyone ever use this method of heard of it? This is the first i've heard of it, but it seems like if you are only concerned about passing smog this will work.

Just an FYI.....

dhicks

I am interested in this.....any more info.....I will buy an excellence this w/e to inverstiagte further

fbfisher

Here it is: https://rennlist.com/forums/showpost...21&postcount=1

mrsullivan

so far no issues with this on my car... that I know of...

2nd owner, it has about 30k miles on it now... sorry to hear about your troubles...

Ray Calvo

Gotta agree with Shawn;. these cars like to RUN.

Give it several 1-hour+ blasts on back roads with plenty of Techron gas fill-up treatments. And stop driving it daily; I feel 2+ daily complete engine heatup/cooldown cycles aggravate this CEL/carbon buildup situation. I might just be old-fashioned, but have 87K+ miles on my '95 and engine is dry as a bone and I get 3Kmiles/qt of oil. No problems passing PA emission checks.

trojanman

My car had what I strongly believe was a modified version of Otto's fix done... cost the prior owner over $1k and didn't solve the problem.

Arrwin

I hope this is true. I usually only drive on the weekends and try to avoid the short trips, although often hard since i'm in NYC and everything is conveniently close. Also try to go out to LI as much as I can where there's less traffic and stoplights. I try to keep the RPMs high (4-5k) on the highway to avoid lugging. Right before an oil change i'll put in some Techron.

Hopefully all this will contribute in alleviating the carbon build-up and I will never see the CEL {{knock on wood}}.