55mph engine shutter

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May 20, 2007 | 09:57 AM

reed66

Thread Starter

Junior Member

Joined: May 2007

Posts: 1

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55mph engine shutter

1994 f150 4.9 inline 6 cyl, shutters when reachin about 55 mph. Also shutters at all speed when humidity is high. (Feels like its out of gas) Help???

May 20, 2007 | 10:25 AM

projectSHO89

Senior Member

Joined: Oct 2002

Posts: 7,295

Likes: 125

From: St. Louis (Out in the woods)

Probably plug wires causing a misfire.

Give it a complete tuneup including a new fuel filter.

Steve

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