4R100 transmission issue - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 04-02-2014, 12:58 PM Thread Starter
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4R100 transmission issue

I have a 1999 F-350, 2 wheel drive, 7.3 and 4R100 trans. The other day when it should have shifted into overdrive it acted like it had no overdrive. I mashed the OD button and it went back to drive then it went into OD. Today when it shifted to OD it slowed down the truck like it was hung in two gears. Once again I pushed the OD button off and it went back in drive and seemed fine until I tried OD again. It feels like it holding the truck back. Any idea what this could be?
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post #2 of 2 Old 04-13-2014, 05:47 AM
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is the overdrive light flashing at all? May have a torque converter clutch soleniod acting up. hows the fluid condition?

2002 f250 ccsb 4x4, stock sticks,5 inch mbrp,itp boost fooler,fuel spring upgrade, ais intake, sluggish 4r100, 140 idm mod, lifted 2 inches, leveled,

2006 f350 ccsb 6.0, sct tuner 3015 canned for now, studded, deleted by me, custom fuel system to follow, along with custom tunes
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