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2006 997 C4S PSM Failure at high speed

jtellez

New member
Joined
13 Dec 2008
Messages
3
Hi Folks,

Regards from Mexico.

Few days ago I trade my 2008 Cayman 2.7 that I got it brand new for a used Carrera 4S with 5000+ Km, this 911 is equipped with the GT3 wings/spoilers kit in the back and front

When I tested the car everything looked and feel OK but never really runned more than 200 km/h for a while

The car was allready requesting service because the 2 years old so I forced the owner to take it to the Volkswagen Factory (is here in Puebla) who is the Porsche de Mexico representative.

The factory service the car and I went there and ask for any abnormally issues in the ECU, the technician sayd all was OK so I was confident to trade it for the Cayman and I trade it (+$20K)

The thing is that once I was allready owing it and I took for a speed ride, after some little while at more than 200 Km/h the PSM warning light came up and said "PSM Fail"... I basically "reboot" the car (turn off and on again) and dissapeir... today the failure came up again...

Something to say is that not all the time I drive fast that happends, has happend me twice and only at high speeds...

One friend of mine from the Porsche Club told me that he knew about a case like that and he heard that was the MAF (mass air flow) but sounds irrelevant to me since that is carburation not traction...

Any help I will thank it... if you can also reply to [email protected]

Happy holidays
 
I seem to remember hearing something about this happening when you hit something of a bump at high speed.

Could that be the problem?

As I recall, you had to 'reboot' just as you did, but it doesn't indicate that there's a fault, just that the system is perhaps a little too sensitive for its own good.

Now I think of it, I'm pretty sure it happened when I was driving a GT3 around the high-speed bowl at Millbrook - although there's no PSM, I think the traction control 'faulted' when I crossed an expansion joint at, well, quite a rapid rate.
 
thanks John!!!!

makes a lot of sense.... Mexico is not know to have the smoothest roads....

mmm...

I will test further and let u know... for example yesterday the error came up at low speed in a street full of speed bumps (I was pasing them sideways to clear the front spoiler) and error ocurr...

I will be monitoring with this new data....

Regards
 
jtellez said:
thanks John!!!!

makes a lot of sense.... Mexico is not know to have the smoothest roads....

mmm...

I will test further and let u know... for example yesterday the error came up at low speed in a street full of speed bumps (I was pasing them sideways to clear the front spoiler) and error ocurr...

I will be monitoring with this new data....

Regards

Could well be the sensor 'under' the brake pedal, failure of those can result in something similar.

Oh, welcome to 911uk! :thumb:
 

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