Re: 997 Rev limiter stopping me at 6k
911gh said:
Hi all - picked up my first Porsche, a 997.1 C2, recently and have found at around 6000rpm the car lurches forward as if I'm hitting the electronic limiter. Have noticed this in 1st, 2nd and 3rd (haven't had the room for 4,5,6) and the car is up to temperature.
I'm fairly certain this should be happening around the 7/7.2k mark? Any insight would be greatly appreciated!
You are right, there's probably something wrong with the car. Either the rev counter is under-reading or the ECU, crankshaft sensor, or some other engine control component is faulty.
According to Porsche's specification for the 997.1 Carrera (not S), maximum power is 325PS at 6,800rpm and the rev limiter is set at 7,300rpm.
7,000rpm in first gear is about 45mph, in second gear about 65mph or thereabouts.
What does your speedo read when the rev counter is showing 6,000rpm?
In first and second gear the engine ought to rev smoothly and effortlessly up to 7,000rpm and beyond, with only part throttle, ie: without any thrashing or abuse - as long as you've let it all warm up properly first. You can actually do more damage by treating it like a turbo-diesel and lugging the engine from low rpm.
The car should happily rev beyond 7,000rpm in higher gears if you push it a bit harder but then you're into illegal speeds.
If it seems to be otherwise running smoothly, but hitting an apparent limit at 6,000rpm every time, then something is definitely wrong. A failed coil pack would normally cause the car to run rough all the time so that's less likely.
I suggest you get the car looked at by an OPC or a specialist.