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Need some help with an E 250 van
Hello everyone I have a poor E 250 van that runs poor at an idle and also sets a P0171 lean bank 1, at an idle long term FT is at +25%. Raise the RPMs just a tad so that the vacuum drops in the intake and the trim drops to 0, confirming a vacuum leak. Smoke te... Login to read more. 
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| Engine | 5.4 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
1999 Ford E-250 Econoline 5.4L
| Engine | 5.4 L |
| Trans | 4-speed Automatic (Electronic) |
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