No shift to 3rd gear - Ford Powerstroke Diesel Forum
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Old 01-28-2014, 02:31 PM
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No shift to 3rd gear

I have a 1999 F350 with auto tranny and recently went mudding and now the tranny won't shift out of 2nd but 1-2 is fine and reverse is fine. I checked all the wiring and all was fine so I'm thinking 2-3 shift valve in the valve body. Can u replace this with the tranny in the truck? How easy would it be to loose the check balls?
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Old 01-28-2014, 03:40 PM
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I had the same problem last fall , but it was intermittent , when it was completely warmed up ,and then shut off, and then left for awhile, but still warm it would not shift out of second. Sitting overnight back to shifting okay. This winter I have not had the problem shifts normal. It seems to be related to getting up to normal operating temperature . With my 6.0 transmission cooler it does not get as warm as it should in the winter.

I talked to Brian at BTS last fall when it started shifting funny, his thoughts were solenoid pack, he sent me one to try. Have not tried it yet because it is working okay right now. I will wait for warmer weather ,and see if starts acting up again. If the problem is not the solenoid, then most likely the 2-3 shift valve as you mentioned. Sounds like there is not too much of a problem removing them, and repairing the shift valve. Good luck
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Old 01-29-2014, 04:21 AM
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Can you remove it with the tranny in the truck?
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Old 01-29-2014, 10:21 AM
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Quote:
Originally Posted by powersmok View Post
Can you remove it with the tranny in the truck?

Apparently you can change the valve body with the tranny in the truck, I read all the time about guys upgrading their valve bodies, kind of doubt they pull the tranny for that. Hopefully someone will come along, and clear it up, hopefully Mark. I will need to know also if my problem is not the solenoid pack .
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Old 02-04-2014, 01:25 PM
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So I found the problem and it was the stuck 2-3 shift valve in the valve body as I expected. It was fairly easy to pop free.
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Old 02-04-2014, 04:29 PM
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Quote:
Originally Posted by powersmok View Post
So I found the problem and it was the stuck 2-3 shift valve in the valve body as I expected. It was fairly easy to pop free.
Could you elaborate on what you had to do, did you drop the valve body ???
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Old 02-04-2014, 04:40 PM
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Drain the fluid, drop the pan, take filter off. The front valve body is the accumulator body not sure if u have to remove it but I did. Be careful not to tear the black gasket behind it. Remove the main valve body, upper and lower as 1 unit by not removing the two short bolts that hold them together. Pull down while being careful to not tear or move the gasket. Rember that check valve balls are behind the gasket and if the gasket is removed they will fall out! I had to find the 2-3 shift valve and wiggle it shut with a pick.
I'm guessing if yours is intermittent that the valve is only sticking sometimes. You can buy a aftermarket valve that won't stick for $25.
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Old 02-04-2014, 05:52 PM
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Quote:
Originally Posted by powersmok View Post
Drain the fluid, drop the pan, take filter off. The front valve body is the accumulator body not sure if u have to remove it but I did. Be careful not to tear the black gasket behind it. Remove the main valve body, upper and lower as 1 unit by not removing the two short bolts that hold them together. Pull down while being careful to not tear or move the gasket. Rember that check valve balls are behind the gasket and if the gasket is removed they will fall out! I had to find the 2-3 shift valve and wiggle it shut with a pick.
I'm guessing if yours is intermittent that the valve is only sticking sometimes. You can buy a aftermarket valve that won't stick for $25.
Thanks, I will check it out, right now it's shifting okay. where do you buy this valve ??
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Old 02-04-2014, 05:55 PM
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