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4r100 Transmission Slipping, NO CODES!

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Old 07-13-2015, 04:40 PM   #1
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Default 4r100 Transmission Slipping, NO CODES!

Not sure if I've asked this question before but how could a 4r100 transmission in a 5.4l F150 have slipping problems without generating computer codes? My 92 5.0 Mustang generated codes if I shut the door to hard, not true but it generated codes frequently. I've never seen a code flash on the F150 but the transmission is about to go out. How can that be?
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Old 07-13-2015, 05:03 PM   #2
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It can slip an not throw a code. Time for a rebuild.
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Old 07-15-2015, 06:52 PM   #3
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Default Overdrive off light

Is your overdrive off light flashing after a short drive? Mine does, but it's getting a new trans soon.
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Old 07-16-2015, 07:59 PM   #4
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Originally Posted by Ryan_titchell View Post
Is your overdrive off light flashing after a short drive? Mine does, but it's getting a new trans soon.
Does not flash but when I first got the truck the OD "OFF" light didn't work at all, checked the fuse and it was burn. Thinking I just solved my transmission problems by replacing a fuse, lol I hit the highway with great anticipation but it wasn't the fuse. Lol, still have internal transmission problems. Can't ever be something simple and cheap like a fuse, well not with me anyways!
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Old 07-16-2015, 08:02 PM   #5
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Originally Posted by savatreatabvr View Post
Does not flash but when I first got the truck the OD "OFF" light didn't work at all, checked the fuse and it was burn. Thinking I just solved my transmission problems by replacing a fuse, lol I hit the highway with great anticipation but it wasn't the fuse. Lol, still have internal transmission problems. Can't ever be something simple and cheap like a fuse, well not with me anyways!
Cool! My O/D off light was flashing because I knew I had internal transmission problems (it doesn't always go into reverse, and its violent 1st to 2nd gear,) and its getting fixed now.
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