Rough Idle - Power Hungry Performance Forum

		Power Hungry Performance Forum > Ford F-150, Expedition, Navigator, Blackwood, Mark-LT, SVT Lightning and H-D Editions (Disabled) > 2004 to 2008 F-150 and Mark-LT
Rough Idle

2004 to 2008 F-150 and Mark-LT
4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs.

Wed, June 16th, 2010, 04:53 PM

Longshot270 Longshot270 is offline

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Join Date: Jul 2009

Location: DFW, TX

Posts: 1,878

Mine is a 4.6 and does the same thing but always has. You could try fixing it by raising the idle speed a little bit.

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