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1986 Ford Bronco II 2.9L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy
All symptoms parallel tech service bulletin no. 86-6-32, Rough Idle, Black Smoke With Manual Transmission. The only problem is that we hav an automatic. We did try a like used ECU, but no change. Do you think we need to spring for a new ECU? We also tested...
FIX posted 7/1/1999
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| VIN | 1FMCU14T2G |
| Engine | 2.9 L / 6 cyl |
| Emissions | US FED EMISSIONS |
| Symptoms | Excessive Emissions, Poor Idle Quality, Poor Fuel Economy |
| Occurs | Always, Hot, Idle |
Trouble Codes
| 42 | rich o2 |
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Vehicle Data
1986 Ford Bronco II
| VIN | 1FMCU14T2G |
| Engine | 2.9 L / 6 cyl |
| Emissions | US FED EMISSIONS |
| Symptoms | Excessive Emissions, Poor Idle Quality, Poor Fuel Economy |
| Occurs | Always, Hot, Idle |
Trouble Codes
| 42 | rich o2 |
Video