4R100 wont shift beyond 2nd!!! - Ford Powerstroke Diesel Forum
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Old 10-28-2009, 12:53 AM
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4R100 wont shift beyond 2nd!!!

Ive got a 2003 F250 7.3L with the 4R100 auto trans. About a week ago started not shifting beyond 2nd gear. Runs 1st, shifts flawless to 2nd, then runs all the way to redline. Truck is creeping up on 200K miles and not a real great time to be lookin into a replacement. Any help would be appreciated. Oh and the only time OD has flashed was when i tried running with OD manually turned via push button. Thanks a million.
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Old 10-28-2009, 12:58 AM
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Bring it somewhere to get it checked where they can hook it to a computer, if the pcm tells the tranny to shift and it doesnt well its inside the transmission, if not its probably the pcm,that is exactly what my brother in law truck just did last week-end.

Last edited by builtnotbought; 10-28-2009 at 10:38 AM.
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Old 10-28-2009, 06:34 AM
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Thank you, Im going to set something up today. Ill get back when I know whats up.
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Old 10-28-2009, 10:59 AM
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Likely a bad solenoid in the valve body, but you’re on the right track.
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Old 10-31-2009, 01:27 PM
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Finally got the error code read today. P0782 2-3 shift error. sounds like ill be doin a solenoid body. Any tips on that job?
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Old 10-31-2009, 03:27 PM
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Quote:
Originally Posted by Cowboymike View Post
Finally got the error code read today. P0782 2-3 shift error. sounds like ill be doin a solenoid body. Any tips on that job?
Ebay is a good place to get the solenoid if you have time.
May as well drain the converter and cooler and get a complete fluid change out of it.
Clean the top of the tarns housing where they plug into the harness before you even pull the pan down.
Buy or make one of these filter clips:
Buy clip here. they also have all the other parts.

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Old 11-27-2010, 10:30 AM
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I have a similar situation but my problem is intermittent. Sometimes it will shift normally without issue but sometimes it seems to slip. I start in drive and it seems to slip then I drop it into 1st and get up to speed I then shift up to 2nd but it does not seem to shift, then I put it in drive once I have some momentum and it will do ok. when I do have the issue the OD light flashes and when I am not having the issue it does not. Some times I will start out with the issue and OD light flashing and get a couple of blocks down the road and it goes off and the issue goes away. I am thinking solenoid???
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Old 11-27-2010, 12:29 PM
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If you get a flashy light you should have a code in there that will help sort it out. Could be solenoid but that could also be a leaking O-ring on a clutch pack, worn clutch pack, low pressure, and a host of other stuff. Pulling the codes or having them pulled is the place to start, that will narrow it down a bunch.
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Old 12-11-2010, 11:35 AM
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I had a similar problem yesterday on my way home after plowing. Only had 1st and 2nd. It sat for about an hour then took it out and scaned it. it was shifting fine again but these were the codes I pulled:
P0705 Transmission Range Sensor Circuit Malfunction (PRNDL Input)
P0732 Gear 2 Incorrect Ratio
P0733 Gear 3 Incorrect Ratio
P0781 1-2 Shift
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Old 12-11-2010, 08:51 PM
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I had this on my plow truck also, a snow/ice ball had smacked the range sensor and knocked it out of adjustment. The range sensor is on the trans where the shifter linkage goes into the trans. Replacing it with a new one and adjusting it should fix it.
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