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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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7 Replies Received
7 Replies Received
| 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 |
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 |
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