mymac

I ran a diagnostic eval on my new to me 2012.5 991 CS. Found a few faults of no concern, but did see an ( 1 ) over rev " Over rev range 1: 95/8380.32 h " . Should I be concerned ? How is an over rev even possible these day's with all the built in safe guards " rev limiters" ??

Joec500

Range 1 over rev? and only one incident? I wouldn't worry about it. Porsche will still CPO cars with that report.

Is this is a PDK? If so, it was probably a glitch or misread as I am unclear how one can over rev a PDK tranny.

Stevelev

I understand it isn't possible with PDK but definitely is with a manual ...

Jaws1

No concern at all if you visit range 1 or 2. If >3, Porsche can supposedly deny warranty. You don't mention if you have a PDK or MT, but if you bounce off the rev limiter on an upshift it's a range 1 over-rev. I got carried away the other day and hit fuel cut off in 1st. The higher range over revs are caused by a missed downshift (ie 4 to 1) where the engine is physically connected to the wheels so fuel/ignition cut off does nothing to reduce engine speed. Quick clutch foot and a prayer is the only solution in those situations.

hbear

mymac

Sorry, yes it is a PDK.

LexVan

The way I read this, is you have 95 over-revs in range #1 with the last recorded event at operating hour 8,380. Normal. No issue. And proof positive a PDK can be over -reved. No surprise there either.

LexVan

Wait. Something is not right. How many total operating hours? Approx 8,380 can't be right unless you have over about 250,000 miles already.

mymac

30K

LexVan

Are you sure your hour time stamp is correct? Do you mean 838 hours? Now way you have 30,000 miles and +8,380 operating hours. That's a brisk walking pace.

mymac

30,672 miles, and 8380 is correct.........

friar93

Man, I thought my commute was bad....

LexVan

NFW. I've read over a 1,000 DME reports. I've never seen an average MPH of 3.66. Never. Ain't correct.

Mark993TT

Churchill

Is it really possible to overrev a PDK? You can't money shift it, and the computer cuts off throttle at redline. Genuinely curious, as I always thought it was impossible.