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1997 BMW 740i 4.4L Surge, MIL Lamp on
Downstream and upstream o2 sensors seem to switch at the the same rate on both banks but only bank one code for cat efficiency returns. mil illumination coincides with a slight surge feeling,(reported by cust) Any help would be welcome.
FIX posted 9/26/2006
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Related Documents & Media | VIN | WBAGF8327V |
| Engine | 4.4 L / 8 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | Surge, MIL Lamp On |
| Occurs | Always |
| Misc. | Recent Catalyst |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed
Vehicle Data
1997 BMW 740i
| VIN | WBAGF8327V |
| Engine | 4.4 L / 8 cyl / GAS |
| Trans | 5-speed Automatic (Electronic) |
| Delivery | FI / SEFI |
| Emissions | OBD-II Compliant |
| Symptoms | Surge, MIL Lamp On |
| Occurs | Always |
| Misc. | Recent Catalyst |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
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