Rough Or Unstable Idle
WARNING: This page does not describe the selected car, but rather 34 other vehicles, including the 2001 BMW Z8, 2001 BMW Z3, 2001 BMW X5, 2001 BMW M5, and 2001 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.
- Fouled spark plugs.
- Burned or sticking valves.
- Intake manifold air leak.
- Incorrect valve timing.
- Ignition system malfunction.
- Fuel injector not operating.
- DME/Motronic control unit malfunction.
- Blown head gasket.