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Chugging

Old Jul 17, 2007 | 04:15 PM
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jefxxo
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Chugging

Trying to solve a chugging problem with a buddies truck. 91 f150 I6, feels like a plug is miss firing but has a COMPLETE tune up. I did notice, on the back of the motor up by the valve cover on the drivers side there is a bracket holding 3 "things" that have 3 plugs that plug into them. The one in the very back is missing. And the plug is hanging there. What are these and could this cause the problem?

My guess other than that would be, fuel injectors, or the tranny Im not sure if its set right being it shifts hard into gears when driving it. And if it were to shift to early in OD I could seeing it making the truck Jump/chugg. Thanks all Let me know what you think.
 
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Old Jul 22, 2007 | 11:01 PM
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*Bump* Anyone have any idea what the last plug in is used for?
 
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