View Poll Results: Does your 911 stumble / hesitate

Yes - Stumbles / Hesitates (Appeared after xxxx miles)

18.37%

Yes - Stumbles / Hesitates (Started at delivery (0 miles))

13.27%

No - Smooth as silk (What stumble?)

68.37%

Voters: 98. You may not vote on this poll

Engine Stumble Poll

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Sep 29, 2014 | 07:25 PM

#91

naples991

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From: Naples, FL

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naples991 is infamous around these parts

Quote:

Originally Posted by rnl

Probably could be easily detected and recorded on a dynamometer This would most liked be a prerequisite to any lawsuit along with with the opinion of an expert

How expensive is this to do? I am sure it will chart HP output over time which is bound to show a drop.

Sep 30, 2014 | 07:55 AM

#92

ChuckJ

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Posts: 2,806

From: Dallas

Rep Power: 176

Quote:

Originally Posted by dux

Questionnaire will be posted shortly.
Awaiting a few more responses in order to have an adequate "stumble" pool.

Thanks in advance.

Hey dux. Could you include in your questionnaire if their standard RPM at idle is 600 and 800 in sport. Leaking vacuum would effect this.

Thanks

ChuckJ

Sep 30, 2014 | 07:57 AM

#93

dux

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Quote:

Originally Posted by ChuckJ

Hey dux. Could you include in your questionnaire if their standard RPM at idle is 600 and 800 in sport. Leaking vacuum would effect this.

Thanks

ChuckJ

Great point - will do . Thx

Sep 30, 2014 | 11:19 AM

#94

ChuckJ

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Posts: 2,806

From: Dallas

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Quote:

Originally Posted by dux

Great point - will do . Thx

We just have to make sure that people know it has to be fully warmed up to get this response.

Thanks again for working this issue.

ChuckJ

Oct 1, 2014 | 01:50 PM

#95

ChuckJ

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From: Dallas

Rep Power: 176

Quote:

Originally Posted by DallasDave

I went from a 997.2 to the 991 with 18 miles on the odometer. After my first few drives I noticed the hesitation immediately and reported it to the dealer. Lead service tech indicated that he had it before but offered no solution.

I'm now over 6k miles and have had the pdk reprogrammed with no change. It is annoying when I initially accelerate from a light and the engine bogs down before full acceleration is achieved.

Still waiting to hear/read of a solution.

Dave in Dallas

Dave:
Did you take it to Cliff Blackshear (469-951-5227) at Plano Porsche and ride with him? Did he feel it and try to take care of it? If he can't fix it, we're all in trouble. If not, I recommend calling Issac Madrid (214-576-1923) and scheduling it in when Cliff can look at it.

ChuckJ

Oct 2, 2014 | 07:26 AM

#96

dux

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Folks,
I'm coordinating with another owner regarding posting the questionnaire.
Any suggestions on your preferred method to return the questionnaire?

Working with surveymonkey.com but open to other suggestions..

Last edited by dux; Oct 2, 2014 at 07:47 AM.

Oct 2, 2014 | 09:04 AM

#97

stealthboy

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From: Northern VA

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Quote:

Originally Posted by dux

Something online and easy. Surveymonkey works for me.

Oct 2, 2014 | 12:46 PM

#98

dux

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Survey

Please complete the survey below.

http://www.sogosurvey.com/k/RQsRVUSWsRsPsPsP

Thanks to Weim911 for agreeing to collaborate.

Oct 2, 2014 | 12:48 PM

#99

stealthboy

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Posts: 325

From: Northern VA

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Quote:

Originally Posted by dux

Please complete the survey below.

http://www.sogosurvey.com/k/RQsRVUSWsRsPsPsP

Thanks to Weim911 for agreeing to collaborate.

Excellent, but I cannot submit since I have none of the options on question 7! Also, typo on question 20. Question 16 is also oddly worded - the question asks if it improves or worsens, but then the answer is yes/no. Does that just mean you're asking if it makes a change at all and you don't care if it improves or worsens?

Last edited by stealthboy; Oct 2, 2014 at 12:51 PM.

Oct 2, 2014 | 12:54 PM

#100

dux

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Quote:

Originally Posted by stealthboy

Please hold - addressing your observations.
Question 7 has been fixed.

Oct 2, 2014 | 01:06 PM

#101

dux

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Corrections and clarifications have been made.
Thank you

Oct 2, 2014 | 01:33 PM

#102

Money2536

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From: The Villages, FL

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Money2536 has a reputation beyond repute

Filled out. Thanks dux!

Oct 2, 2014 | 02:46 PM

#103

ChuckJ

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Joined: May 2010

Posts: 2,806

From: Dallas

Rep Power: 176

Quote:

Originally Posted by dux

Please complete the survey below.

http://www.sogosurvey.com/k/RQsRVUSWsRsPsPsP

Thanks to Weim911 for agreeing to collaborate.

Dux:
To clarify, this survey is only to be filled out by people who have the problem, correct?

ChuckJ

Oct 2, 2014 | 02:54 PM

#104

dux

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Quote:

Originally Posted by ChuckJ

Dux:
To clarify, this survey is only to be filled out by people who have the problem, correct?

ChuckJ

No - I prefer that everyone fill out the survey so that we can determine a pattern / trend to differentiate the stumblers from the non-stumblers.

The more data we have, the better. That way we'll be able to drill down further, should certain commonalities start to become apparent.

Thanks for asking.

Last edited by dux; Oct 2, 2014 at 02:58 PM.