Hey guys. I have a 2013 991 C4S. 6k miles. Firstly thanks for posting this info... I actually thought this was a perfectly normal scenario as I'm having the same issue on my car. Anytime I pull away in 1st or 2nd I experience engine throttle lag. It almost feels like the car is going to stall. If I stay in Sport mode there is less lag, however it's still there. Going to take mine in to the dealership to see what they can offer up...

 

Since its launch in 2012, there have been 28,000 plus 991's sold in the United States and Canada. Based on the poll results, the number having a stumble issue seems to be relatively small when compared to the total sold especially when you consider that the 28,000 does not include the rest of the world. Is it possible this is why we are getting little, if any, help from the dealer network or PCNA? Is 6speedonline.com a factor in other countries where Porsches are sold? If so, that would give us a larger group of owners to extract information from. It would be interesting to know how many owners outside of the U.S. and Canada are experiencing the stumble issue.

 

If 83 people have responded to the poll and 26 of those 83 are stumbling, then couldn't we simple extrapolate the data using a percentage with and factor for error?

I think this is the data that dux is attemting to gather to see if it's isolated to a certain MY batch of cars.

 

With all the companies who post on here that do engine work, and all the people who read through these posts, I'm very shocked that someone hasn't taken an actual car with this problem and tried to diagnose it. That's the most bizarre part of this whole problem. Am I wrong?

The Elephant guys basically dissect the whole suspension of cars in amazing detail, is there nobody else willing to try and get to the issue here? If it can be pinpointed and narrowed down, there would be more to address directly with PCNA in any lawsuits or lemon law filings.

At the end of the day, someone designed the car. It certainly be diagnosed and corrected. Many guys on here race cars and are in circles of people who could take this car apart and put it together with their eyes closed.

It's just when there is nothing to point to, it gives Porsche the easy out with all the pathetic excuses they've given.

Can someone compile a "best of" list of the dealer and rep excuses for this problem??

 

Has one person had their car looked at and diagnosed from anyone other than a incompetentship?

Unless there is a definitive diagnosis, expect it to remain the boogy man in Porsche's eyes.

If this is a problem that isn't severe enough in their eyes, they will do NOTHING about it. I'm sure it's not a cheap fix and once the can of worms is opened, where does it stop ??$$??

 

You are absolutely correct Money2536.
This is why I had requested that ALL 991 owners take the survey regardless of the presence of the stumble.

@STG991 - They had the audacity to tell me that ALL manual transmission 991's stumble but because they're so rare they can't prove this to me.

@dremaley.
The fact the ~28k cars have been sold in North America bolsters our argument that this stumble is NOT normal (contrary to what PCNA might have us believe).

The survey on 6Speedonline also has registered cases of stumbling in Europe and the Middle East, so it is NOT a US spec / gas or emissions issue (another excuse that I was given).

If in fact this is "normal" then logic would dictate that they should ALL do it. If less than 1% of these cars have developed a stumble, then that 1% are the abnormality and need to be fixed. And it really doesn't matter if it's 1%, 10% or 30%. "Normal" does not equate to a very small minority.

None of us expect them to willingly acknowledge the problem or do a damn thing until it becomes absolutely necessary, because damage control is clearly the PCNA preferred manner in dealing with thier customers.

The gathered information will help refute their onslaught of predictable excuses.

PS. If you want to hear your stumble, engage PSE (where applicable).

 

I'm fairly sure that the stumble is a North America only problem, and probably related to emission controls. I don't think the Germans would allow Porsche to get away with the excuses we are getting.

 

Europe and Middle East based survey respondents also affected...

 

Wow! Hard to believe that Porsche hasn't come up with a fix for this. That either means it's not a simple software patch or they still want everyone to believe it's normal!

 

Come on Porsche, stop the stumble, halt the hesitation, and fix the fishline!

 

As we have seen with the Nick experience.. The trick here to getting them to address it is to figure a way to get the news media interested in it.

For example, the yahoo article with some eye grabbing title: "Porsche flagship iconic 911 model has a built in flaw that is outraging thousands of owners and causing them to dump them".. (And then the two paragraph poorly written, researched and mostly incorrect article indicative of most news content these days)

Then it gets spread around because most of the population hates anyone who is perceived as having more money and this makes them feel good.

 

Please, allow me to clarify that statement:

And then the two paragraph poorly written, researched and mostly incorrect article indicative of most online news content these days.

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Hmmmm... that has me thinking. Why can't I write the story and submit it to Yahoo! myself? I only know of two people who have actually complained to Porsche and tried to get it fixed. And that's not enough. Is it time for another poll?

 

How about formulating a 50 word description of the issue and having folks here post it to Porsche FB site? I suspect only a small percentage of the 28K cars sold are members of this forum. Also include a link in the FB post to the survey to capture others.

 

Great idea. This forum is so niche and doesn't have a broad enough reach. Even with Porsche owners! Just look at the survey numbers. Realistically, it should be a couple thousand at least to make an impact on PCNA. It needs to be big enough to get their attention. They dismiss forums like this as Internet chatter and give it little consideration.

Setting up a FB site just for this issue would be even better I think.

 

Folks,
All good advice, however, we will need to let the process run its course.
I cannot speak to how many stumblers have notified PCNA, but that is an essential first step.
The intent of this survey is to;
1. Create awareness.
2. Assist in narrowing down the issue.
3. Validate or negate the random nature thereof.
4. Debunk the noise that we're being fed.

A survey does not need 1000's of responses in order to make it legitimate. Even less than a hundred participants can suffice, with extrapolation being the key to determining patterns.

The current survey already has 18 stumblers out of 50 responses.
The intention was to leave it up for at least a month to gather a decent pool.

Creating "awareness" within the media is currently being discussed.