Gen 2 Cayman S: engine hesitates

[tony993]

Can anyone shed any light on this problem please?

We have a 2009 Gen 2 Cayman S. Sometimes (about one time in four), when I stamp on the throttle from lowish revs (1000 – 2200) in 2nd or 3rd gear, the engine does not respond. Nothing happens for what feels like a long time (maybe as long as two seconds) and, if I keep my foot in, the engine then gets its act together & builds revs.

I haven’t noticed a problem when accelerating gently from low revs.

Any idea what might be causing this & what I can do about it?

[Actus Reus]

Have a search on here - is a known problem with the DFI engine, that Porsche, allegedly, denies.

[tony993]

Thanks - that's good information. I've done plenty of searches but can't find anything, so if anyone has any more on this or can point me to one of these threads, that would be good.

It's strange that it doesn't always happen. It's not good driving a car that you can't control. It's not the only really annoying thing about the Cayman. It's a shame, as it's nearly a very, very good car, but it just seems like Porsche got so far with the design & development, then couldn't be bothered to finish it off properly.

[Jim1556]

Actus Reus said:

Have a search on here - is a known problem with the DFI engine, that Porsche, allegedly, denies.

Apparently it's Porsche's way of getting round type approval noise regs when accelerating from 30mph with wide open throttle. I think the Cayman R boys found it and one has video evidence of the throttle position vs throttle body (dealership called it a characteristic).

Utterly scandalous that Porsche should have to program this throttle delay in or that Euro regs are so ridiculously tight! Sports cars are meant to be noisy!

[mollytherocker]

Maybe we should be thanking Porsche for implementing this throttle stall to get around the euro regs?

[BubblesNW]

Have a look at this ...

http://www.youtube.com/watch?v=3ka4OsAQ_Wo

Cured by a remap but voids the OPC warranty.

[911p]

Very good video showing the problem.

http://youtu.be/qSOm1x9a_Is

[itsybitsy]

not all cars especially pdk do it for some reason my manual car shows no sign of throttle pick up problems even done the 3/4 gear acceleration at 31mph/50kph as per video.

[rob.kellock]

My Spyder does it. Solution would seem to be drop it down to 2nd gear if you want to floor it at 32mph. Can't say it is my greatest concern in life.

[Bumble SV]

There is a similar issue in the Boxster 987.2 S, which I feel as a hesitationr going through the 30-50 range. Less of an issue when in sport mode but still there.

After several OPC visits and acknowledgments by the Master Tech that it wasn't right, a long story later involving both Stuttgart and Reading, it turns out to be a "characteristic" as mentioned above, with Porsche officially denying it all.

In addition to the reasons mentioned, our UK CO2 bandings also appear to be to blame - the Boxster S is 231 rated in most countries but 223 in the UK (conveniently just below the 225 threshold).

It can apparently be mapped out as mentioned above but IMHO, now I know why, I can live with it and it doesn't bother me (too much anyway!).

[tony993]

Thanks everyone. It's the girlfriend's car and I normally only drive it one day a week. I guess we'll just live with it.