I have a 3.2 911 Carrera, 1988. The rev limiter cuts in at 5400rpm instead of the red line some 1000 revs (and lots of power) later. I have changed the leads, plugs, rotor arm, distributer cap, fuel filter and the air filter. Changing the fuel filter did improve the cars performance but the problem is still evident, any help appereciated.
Has it been chipped? Perhaps an after-market chip is misbehaving? Never heard of it happening before but that doesn't mean it might not be happening now :?
Thanks for the tips, I changed the fuses and cleaned the earths yesterday, gave the car a good thrashing and the problem is still there, I'm thinking of trring an airflow meter from another car, I wonder if anyone has had any problems with that???
I drove the car to London this weekend and got stuck in loads of traffic, no surprise there, when i finally got free i released my tension by giving the car a good trash, unfortunatly it would not rev over 5000 rpm this time, i'm wondering about the engine temp sensor as I hear of problems and there is a modified one with an additional earth strap, i wonder if anyone has had a problem with that????
Phone Ray Northway 01189714333 a porsche specialist (between Reading and Newbury) - but very helpful and knowledgeable. Should be able to give you a few diagnostic options.
Thanks for the tip, I've telephoned Ray Northway and he has sugested that I check the ECU, swap with a friend maybe, and check the speed reference sensor that has a pick up on the flywheel, This would make sense as surely this is the only way the ECU knows how fast the engine is turning??