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Porsche Parts at Dealer Cost
Hi all, need some advice...
Just bought a MY05 Cayenne Turbo and while crusing on the Motorway at 70 mph, if I put my foot down on the gas pedal it shifts down to 5th / 4th to accelerate - all good except that the downshift to 4th shudders the whole car and sounds horrendous. Is this just the car not being use to my driving style or is it something more serious...?
Also while going around town at 30mph, the down shift from 5th to 4th can be a little notchy as well, not sure if this is related or not.
Any advice greatfully received!
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Very Harsh Down Shift - 6th to 4th...
MultiQuote
#2
- Member
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- Group: Members
- Posts: 4
- Joined: May 13, 2009
- From:Orlando
Posted May 13, 2009 - 12:46 PM
How many miles on it...could be a bad front motor mount. I understand they go bad around 40000 miles.
boinging, on May 13 2009, 11:00 AM, said:
Hi all, need some advice...
Just bought a MY05 Cayenne Turbo and while crusing on the Motorway at 70 mph, if I put my foot down on the gas pedal it shifts down to 5th / 4th to accelerate - all good except that the downshift to 4th shudders the whole car and sounds horrendous. Is this just the car not being use to my driving style or is it something more serious...?
Also while going around town at 30mph, the down shift from 5th to 4th can be a little notchy as well, not sure if this is related or not.
Any advice greatfully received!
Just bought a MY05 Cayenne Turbo and while crusing on the Motorway at 70 mph, if I put my foot down on the gas pedal it shifts down to 5th / 4th to accelerate - all good except that the downshift to 4th shudders the whole car and sounds horrendous. Is this just the car not being use to my driving style or is it something more serious...?
Also while going around town at 30mph, the down shift from 5th to 4th can be a little notchy as well, not sure if this is related or not.
Any advice greatfully received!
#5
- Contributing Member
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- Group: Contributing Members
- Posts: 72
- Joined: December 25, 2006
- From:NorCal
Posted May 23, 2009 - 04:45 PM
Yep, had the exact same symptom on my 2004 CTT.... was a bad transmission valve body. The dealer also replaced the control unit for the transmission since there was an updated version. Runs about $2000 installed.
David
David
David - San Jose, CA
Current: 2004 Porsche Cayenne Turbo, EVOMSit ECU upgrade, PSE Porsche Sport Exhaust, Fabspeed bypass pipes, EVOMS intake, EVOMS Diverter Valves, clear sidemarkers, 20" GTS style wheels, Adjustable lowering links, Alpine Sub amp with 10" Image Dynamic sub, Dension Gateway 500 interface with I-pod and XM Radio, ... more to come
Former: 1999 Porsche 911 C2 - Black on Black
Current: 2004 Porsche Cayenne Turbo, EVOMSit ECU upgrade, PSE Porsche Sport Exhaust, Fabspeed bypass pipes, EVOMS intake, EVOMS Diverter Valves, clear sidemarkers, 20" GTS style wheels, Adjustable lowering links, Alpine Sub amp with 10" Image Dynamic sub, Dension Gateway 500 interface with I-pod and XM Radio, ... more to come
Former: 1999 Porsche 911 C2 - Black on Black
#6
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- Group: Members
- Posts: 3
- Joined: April 25, 2009
Posted May 24, 2009 - 12:59 AM
Reborn996, on May 23 2009, 05:45 PM, said:
Yep, had the exact same symptom on my 2004 CTT.... was a bad transmission valve body. The dealer also replaced the control unit for the transmission since there was an updated version. Runs about $2000 installed.
David
David
Thanks all, it's back with the dealer now for repair. Will be interesting to see what they say is wrong! I'll mention the valve body when I call them on Tuesday.
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