2005 Porsche 911 Carrera Unintended Engine Acceleration

Tiny
DSCHANIN
  • MEMBER
  • 2005 PORSCHE 911
  • 6 CYL
  • 2WD
  • MANUAL
  • 12,000 MILES
When driving in first or second gear, while accelerating, the car will jump and knock between 2500 and 3200 RPM. Dealer is clueless and still under warranty. Feels mechanical in nature. Does this model have VarioCAM and could that be sticking so it shifts suddenly from one setting to the next instead of smooth slide? Also happens after throttle lift-off and re-application of throttle while on the highway. Thanks.
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Monday, October 27th, 2008 AT 9:12 PM

3 Replies

Tiny
IMPALASS
  • EXPERT
Hello

I show several 911 Carrera. Not sure which one you have but the 911 Carrera, 911 Carrera 4S, and 911 Carrera S all have recalls on the manual transmission depending on the transmission you have. I have attached the Recall for you.
As for the way it is driving, I don't show anything at quick glance for what you describe. However, as you said, the car is still under warranty. The dealer must fix the car. He can not just keep giving it back. There is a lemon law which you can impose if he will not properly repair your car.
First I would defiantly check on the recall and ensure it did not affect your car and if so it was repaired. Next, I would insist they fix it or invoke the lemon law which would require an attorney.
You have paid a lot of money for the car. They should provide good service.
911 (997)
2/05

October 21, 2005
Section - 3, Tiptronic Transmission
W562 - Replacing Tiptronic Transmission
(Workshop Service Action)

Vehicle Type:
911 Carrera (997)/911 Carrera S (997)
Model Year:
2005

Concern:
Replacing Tiptronic Transmission (I No. 249)

Information:
This is to inform you of a voluntary Workshop Service Action on certain 2005 model year 911 Carrera (997) and 911 Carrera S (997) vehicles. Due to a defective component in the Tiptronic transmission, transmission noises may be produced at high engine speeds, or the Tiptronic transmission may change to the limited operating program. To remedy the situation, the Tiptronic transmission identification number needs to be checked and depending on the transmission number, the Tiptronic transmission will need to be replaced.

Affected Vehicles:

A total of 269 U.S. and Canadian vehicles fall within the scope of this Service Action.

Very Important! Not every vehicle in the below listed range may be affected. Use the ranges below as a general guideline. Refer to Attachment "A" to determine if a particular vehicle is eligible for this service action. Alternatively, the VIN can be checked in the Porsche e-DCS/WWS for confirmation of an open service action.


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The affected Vehicle Identification Numbers are contained in the VIN Ranges shown.

Work Procedure:

See Attachment "B"


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Time Allowance


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Parts Information


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Tools

Administrative Procedure:

See Attachment "C"


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Attachment "A" VIN Lists

Attachment "B" Work Procedure:

Check the Tiptronic transmission identification number and depending on the transmission number, the Tiptronic transmission will need to be replaced.

1. Lift vehicle with platform lift according to > Workshop Manual '401000 Lifting the vehicle'.

2. Read off transmission number on Tiptronic transmission.

- Transmission # in range, from A9701-1002245 to A9701-1003550, go to with Step 3.

- Transmission # not in range, from A9701-1002245 to A9701-1003550, go to with Step 7.

3. Remove engine/transmission unit according to > Workshop Manual '100119 Removing and installing engine - section on "Removing".

4. Remove Tiptronic transmission according to > Workshop Manual '373527 Removing and refitting automatic transmission - section on "Removing".

5. Install new Tiptronic transmission, part number, 000.043.300.51 according to > Workshop Manual '373527 Removing and refitting automatic transmission section on "Refitting".

6. Install engine/transmission unit according to > Workshop Manual '100119 Removing and installing engine - section on "Installing".

7. Lower the platform lift.

8. Enter the Workshop Service Action in the Warranty and Maintenance booklet.

Attachment "C" Administrative Procedure, Workshop Service Action W562

Warranty claims should be submitted via e-DCS

Note: Always check for open recall status under the appropriate e-DCS menu options.

Affected VINs: See Attachment "A"

Labor Operation:
Will be automatically inserted along with the necessary parts when the damage code is entered.


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Time Allowance


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Parts Information


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Wednesday, October 29th, 2008 AT 12:12 AM
Tiny
DSCHANIN
  • MEMBER
Hi - your answer was really not responsive. The service notice you sent was for an automatic transmission, and I have a manual. I have a 911 Carrera - not 4 or 4S. I asked about the VarioCam or some other adjustable camshaft, and whether this car has such a feature. If it has such, is this feature designed to provide a smooth transition from one setting to the next and is it therefore possible that the controller for this is sticking and hence causing the problem I am having? It is my feeling that this is a mechanical issue and not electronics or controls. Thanks for your assistance.
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Wednesday, October 29th, 2008 AT 3:16 PM
Tiny
IMPALASS
  • EXPERT
Hello -

I am sorry you did not get the proper response. I will try again and if it still isnt' what you are looking for I will forward this to another moderator.

You wanted to know does your car have a VarioCam or some other adjustable camshaft. I don't show if this is the VarioCam that Porsche designed though it would make sense if they designed it then it would be it. You car does have adjustable cams.

Is this feature designed to provide a smooth transition form one setting to the next. The cam since it is adjustable is designed to adjust the timing advance or retard it as required.

Also is it therefore possible that the controller for this is sticking and hence causing the problem. I don't show a "controller" for the cams. You adjust them using special tools.

Since the car is still under warranty I would have the dealer check the adjustment on them to ensure they are set correctly.
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Wednesday, October 29th, 2008 AT 11:44 PM

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