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F150 fuel trims stuck
truck had a badly installed cold air intake. vacuum leaks drove the fuel trims to max. repaired the intake system with all factory parts. ST trims are now -20 as I would expect. LT is +20, but not decreasing. I would expect the negative ST trims to eventually ... Login to read more. 
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| Engine | 4.6 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2007 Ford F-150 STX 4.6L
| Engine | 4.6 L |
| Trans | 4-speed Automatic (Electronic) |
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