
2008 BMW 550i 4.8L Poor Idle Quality, Surge, Misfire, MIL Lamp on
This vehicle has strange intermittent lean condition, it only occurs once during drive cycle & only after sitting overnight, it only occurs when temperature is cool out. Engine starts up fine idle stable, but after 1/2 to 1 mile of driving only when coming...
FIX posted 2/28/2020
![]()
iATN Members:
Login to view full TechHelp request Auto Repair Pros: Join iATN to read this TechHelp request Vehicle Owners: Find a nearby iATN member to repair your vehicle (View Replies)8 Replies Received(Hide Replies)8 Replies Received
|
Message Closed w/FIX
|
VIN | WBANW53518 |
Engine | 4.8 L / 8 cyl / GAS |
Trans | 6-speed Automatic (Electronic) |
Delivery | Fuel Injection / SEFI |
Emissions | OBD-II Compliant |
Symptoms | Poor Idle Quality, Surge, Misfire, MIL Lamp On |
Occurs | Cold, Idle, Intermittently, Only Once After Sitting Overnight |
Trouble Codes
P0300 | Multiple Misfire Detected |
P0301 | Cylinder 1 Misfire Detected |
P0302 | Cylinder 2 Misfire Detected |
P0303 | Cylinder 3 Misfire Detected |
P2187 | Fuel Trim System Rich At Cruise Or Acceleration (Bank 1) |
P2189 | Idle Speed At Startup Too High |
Message Closed w/FIX
Vehicle Data
2008 BMW 550i
VIN | WBANW53518 |
Engine | 4.8 L / 8 cyl / GAS |
Trans | 6-speed Automatic (Electronic) |
Delivery | Fuel Injection / SEFI |
Emissions | OBD-II Compliant |
Symptoms | Poor Idle Quality, Surge, Misfire, MIL Lamp On |
Occurs | Cold, Idle, Intermittently, Only Once After Sitting Overnight |
Trouble Codes
P0300 | Multiple Misfire Detected |
P0301 | Cylinder 1 Misfire Detected |
P0302 | Cylinder 2 Misfire Detected |
P0303 | Cylinder 3 Misfire Detected |
P2187 | Fuel Trim System Rich At Cruise Or Acceleration (Bank 1) |
P2189 | Idle Speed At Startup Too High |