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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 01-26-2011
99ranger_4x4's Avatar
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I am: Rob Knowles
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Check engine light's on.

I checked it, and the numbers 171, and 174 came up. What do you guys think that is?
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Old 01-26-2011
Redrocket's Avatar
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I am: Brandon Aldredge
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thats runing lean both banks.. check for vac leak. also could be the upper and lower intake gaskets
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