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1990 Ford F-150 Custom 4.9L Misfire
First post. Vehicle runs extremely weel until egr valve opens @38-40 mp. Chugs and bucks severely. Saw many posts in archives but no fix. No codes in computer. Nothing abnormal on scope when run on dyno. Ford only parts used on this unit. Any help would be app...
FIX posted 7/16/1998
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Related Documents & Media 
| VIN | 2FTEF14Y4L |
| Engine | 4.9 L / 6 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI / EFI |
| Symptoms | Misfire |
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Vehicle Data
1990 Ford F-150 Custom
| VIN | 2FTEF14Y4L |
| Engine | 4.9 L / 6 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI / EFI |
| Symptoms | Misfire |
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