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- DRIVEABILITY - ROUGH IDLE AND/OR HESITATION ON ACCELERATION - VEHICLES EQUIPPED WITH 5.4L OR 6.8L ENGINE ONLY
| Publication Date: May 5, 2003 |
| 2000-2003 E-350, E-450, EXCURSION, SUPER DUTY F SERIES |
Some F250-F550 Super Duty and Excursion vehicles equipped with a 5.4L or 6.8L engine, and some E350/450 vehicles equipped with a 6.8L engine may exhibit a rough idle and/or hesitation when accelerating. This may occur intermittently within the first 2-3 minutes after start when engine is not warmed up (ie., conditions other than hot restart). The condition is more likely to occur at ambient temperatures of approximately 60° F (16° C) and higher, and may be aggravated by an unmetered air leak or exhaust leak.
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