1991 BMW 520i 2.0L Excessive Emissions, Poor Idle Quality
The car has M50 engine without catalytic converter. It has poor idle quality (hunting) and excessive emissions. Idle speed fluctuated from 620 RPM to 850 RPM and sometime the engine stall. HC reading 1500 ppm at idle. It went down to 500 ppm when the A/C is on...
Summary posted 7/25/2005
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Message Closed w/Summary
Vehicle Data1991 BMW 520i
Trouble Codes
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Message Closed w/Summary
Vehicle Data
1991 BMW 520i
VIN | [No VIN Available] |
Engine | 2.0 L / 6 cyl |
Delivery | FI / DME |
Symptoms | Excessive Emissions, Poor Idle Quality |
Occurs | Always, Cold, Hot, Idle |
Misc. | E34 M50 Engine, No Cat |
Trouble Codes
3 | injector cylinder 1 |