It all started when I was racing in the highway , when shifting from 6 to 5 or 4 , the car just clunk just like the gears were slipping and trying to get out of the car .also lately even on 1-2 2-3 I hear hard cluck and the car feels very unsecure unstable , stressed when shifting wtf ?
I read here and at rennlist about throtle body defect and tcu . I have checked before at porsche workshop and they said it look ok . No code . No signs at all .... again wtf ?
Until know I have changed driveshafts , fuel pumps , spark plugs , coils ..... so are these car so weak ? My car is a 957 cayenne turbo with 87.000 km
The only thing I have been told from the workshop tochange is that thing that holds the engine at the passenger side .....

Any idea would be appriciated . Thanks

 

I want to change transmission oil , but workshop doesng let me or is afraid to change it because they say it should be changed after 200.000km ??.. lets be honest no oil will last that much , my engine oil need to be filled every 5000km ... and the diff. Oil that I changed some month ago was all blacked out and burned and that oil was quoted to last 200.000km

 

So ... Today my car went limp mode in the highway . Called porsche servise shop , picked the car and check it with durametric via obdi and low fuel preassure showed up . So he sad that because of transmission oil etc . So I am going to change the oil , filter and some other parts and will tell how did it go , so someone like me can find an answer here

 

The 6-5 transmission clunk is very typical of a bad valve body. The 1-2 clunk is normally the transmission control unit. I would replace both. I've never seen a fluid change fix either of these issues.

 

I have spend around 10k this year fixing imaginary problems I read here . Like coils cardanshaft , fuel pumps etc etc . I have read about the valve body and tcu problem but I dont want to spend another 3k . Obdi reading was low fuel preasure only . I want to sell my car 35k since a year know and dont want to spend other money on it since I have replaced everything . Imagine it has only 40k miles. Should have bought a gallardo or f430 instead a long time ago .

 

I forgot to mention that my car broke down in highway at 4th gear , couldnt shift higher and went in limp mode

 

news : we changed the oil but the problen remains ....
so we will change valve body and update tcu and ecu . And in orderd to do so I should ship my car to italy . Really I should leave it there or trade for another car , but when you make a request they offer 20k for my car ? I asked for a panamera turbo , it was only 68 k euros and they ofered me my car plus 50k euros hahahahah and I said why not give you directly 68

 

Hopefully you can diagnose the problem and get it repaired without too much more expense.

 

Thanks denversteve . Porsche dealer told me they take full responsibility and will give me warrenty . What do you guys think is a good price to replace the valvebody?

 

so after 1790 euro repair , the problem is fixed or I hope so , but they told me I shouldnt downshift to much in the future because thats what apperantly broke it