Hello,
I have a problem with my e30 325ic. Under hard acceleration at almost exactly 4500RPM (although sometimes it does it at 5000) the engine sort of "stalls" for a second, and then picks up again and pulls all the way up to 6000 Rpm. It is exactly as though I just took my foot off the pedal for a second (but I don't, lol), and happens consistently every time. Other than that the car runs perfectly.
I have tried changing the plugs, but no change. I have checked for vacuum leaks, but can find none. I took it to a BMW "specialist", and he had it for 3 days, and has no idea what the cause is. He tried changing the index ring for the crankshaft position sensor, but no change. The only thing he could tell me was that it keeps registering "a lot of different fault codes", but nothing specific.
Anyone else got any ideas? Any help much appreciated.
Thanks Rob