2002 ford f550 7.3 powerstroker
When I'm driving on the hwy about 45 miles hour it drops to under 2000 rpm then when I get up to 60 - 70 miles it's about 2700 rpm. It shift all 4 gears good. What could it be.
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chriscozi
Diesel Bombers Introduction
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Oct 19, 2012 02:53 PM



