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1986 Ford Ranger STX 2.9L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy
I'm getting frustrated. Everything seems to check ok yet
runs rich at idle. Checked following readings at ECU. Also
checked injector resistance,(good).
FIX posted 2/15/2001
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Related Documents & Media 
| VIN | 1FTCR15T5G |
| Engine | 2.9 L / 6 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI / mpfi |
| Emissions | CA Emissions |
| Symptoms | Excessive Emissions, Poor Idle Quality, Poor Fuel Economy |
| Occurs | Always, Idle |
| Misc. | Xlt, 4X4 |
Trouble Codes
| 25 | KOER No Knock Signal during self test |
| 33 | KOER Insufficiant EGR flow |
| 42 | KOER EGO rich |
Message Closed w/FIX
Vehicle Data
1986 Ford Ranger STX
| VIN | 1FTCR15T5G |
| Engine | 2.9 L / 6 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI / mpfi |
| Emissions | CA Emissions |
| Symptoms | Excessive Emissions, Poor Idle Quality, Poor Fuel Economy |
| Occurs | Always, Idle |
| Misc. | Xlt, 4X4 |
Trouble Codes
| 25 | KOER No Knock Signal during self test |
| 33 | KOER Insufficiant EGR flow |
| 42 | KOER EGO rich |
Video