Symptom Diagnosis
WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 1998 BMW Z3, 1998 BMW M3, 1998 BMW M Roadster, 1998 BMW 740iL, and 1998 BMW 740i. However, it is still accessible from the selected car via links, so may be relevant.
Symptom checks cannot be used properly unless the problem occurs while the vehicle is being tested. To reduce diagnostic time, ensure steps in BASIC DIAGNOSTIC PROCEDURES and SELF-DIAGNOSTICS articles were performed before diagnosing a symptom. Symptoms available for diagnosis include:
- Engine Does Not Start (Will Not Crank)
- Engine Cranks, But Fails To Start
- Engine Backfires
- Loss Of Power
- Detonation (Engine Knock)
- Stalls At Idle
- Engine Runs Rough (Off Idle)
- Rough Or Unstable Idle
- Engine Misfires All Conditions
- Poor Fuel Economy
- Excessive Emissions