4000 rpm Idle
I drove my 156 to the shops at the weekend, it was fine on the way there, but when I started it to come home, it revved up to around 4000 rpm and stayed there. I managed to drive it home, switching the ignition off at every junction to save embarrassment!. When I started the car this morning, it idled at around 2000 rpm, so i took it for a spin and by the time i got back home it was again idleing at around the 4000 prm mark. any ideas at to what might be causing this problem would be greatly appreciated.