4r100 problem
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Freshman User
Joined: Jul 2016
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4r100 problem
Hi all.
Recently I have had an issue with my auto which was just rebuilt. About 500 kays after i picked it up it shifts dangerously hard and immediately into all gears at around 20-40 mph, converter also locks immediately. The speed sensor in the box was replaced with the rebuild but I'm having it replaced again this thursday just in case.
Just for the record I cooked it on the beach a while back, the speed sensor was replaced with the rebuild as it was doing the above, the od light also flashes when this occurs, before and after the rebuild.
Prior to cooking it never had an issue.
Does anyone know of this issue or what could be causing it? I'm starting to worry it cant be fixed, have done a google and tried a couple of things mentioned.
Code says wiring issue associated with speed sensor in box.
Any help appreciated, cheers, Wayne.
Recently I have had an issue with my auto which was just rebuilt. About 500 kays after i picked it up it shifts dangerously hard and immediately into all gears at around 20-40 mph, converter also locks immediately. The speed sensor in the box was replaced with the rebuild but I'm having it replaced again this thursday just in case.
Just for the record I cooked it on the beach a while back, the speed sensor was replaced with the rebuild as it was doing the above, the od light also flashes when this occurs, before and after the rebuild.
Prior to cooking it never had an issue.
Does anyone know of this issue or what could be causing it? I'm starting to worry it cant be fixed, have done a google and tried a couple of things mentioned.
Code says wiring issue associated with speed sensor in box.
Any help appreciated, cheers, Wayne.
Thread Starter
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Freshman User
Joined: Jul 2016
Posts: 29
Likes: 0
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Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,730
Likes: 2,658
From: SE Florida
There are three speed sensors, plus one on the engine. Just saying "speed sensor" isn't very helpful.
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