4R70W - NO 1-2 shift
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Joined: Jun 2011
Posts: 634
Likes: 21
From: Indiana
4R70W - NO 1-2 shift
working on a 2004 E-250 van.
https://www.ford-trucks.com/forums/1...-vans-too.html
I went through this transmission completely, its back in the van and I get no 1-2 shift.
when I first put it together, I missed the hole in the flex plate for the torque converter stud and started tightening the bell housing bolts down, I heard loud "POP" and realized what I had done. maybe I damaged the pump?
forward and reverse engagement is firm, both give a nice bump when it goes in gear. This tells me the forward clutch is working, but the intermediate clutch is not applying to make second gear happen.
I have done all the easy stuff I can think of, replaced the shift solenoid and put in a new 1-2 accumulator piston. I guess i need to air check the intermediate clutch piston again and make sure its applying. this a 2004 model trans, so it has the new style pump and intermediate piston.
any thoughts of what needs to be checked before I rip this POS back out? I am pretty frustrated at this point.
https://www.ford-trucks.com/forums/1...-vans-too.html
I went through this transmission completely, its back in the van and I get no 1-2 shift.
when I first put it together, I missed the hole in the flex plate for the torque converter stud and started tightening the bell housing bolts down, I heard loud "POP" and realized what I had done. maybe I damaged the pump?
forward and reverse engagement is firm, both give a nice bump when it goes in gear. This tells me the forward clutch is working, but the intermediate clutch is not applying to make second gear happen.
I have done all the easy stuff I can think of, replaced the shift solenoid and put in a new 1-2 accumulator piston. I guess i need to air check the intermediate clutch piston again and make sure its applying. this a 2004 model trans, so it has the new style pump and intermediate piston.
any thoughts of what needs to be checked before I rip this POS back out? I am pretty frustrated at this point.
Thread Starter
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More Turbo
Joined: Jun 2011
Posts: 634
Likes: 21
From: Indiana
good points, Mark. I am in the process of pulling the valve body off now. I will inspect the #8 check ball, inspect the 1-2 shift valve and air check the intermediate clutch.
.
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