Ford Transmission :: 4r100 Won't Shift Replaced Valve Body


Aug 23, 2015

I recently purchased a 2000 Expy 5.4 with AWD. The issue is when in Drive it is only in 1st. I can manually shift it to 2nd. If I get it up to 40 and shift it back to drive it just reeves if I am going 30 and do that it throws it back in 1st.

So I searched a lot of the forums, I asked the previous owner some questions. Been 80 to 90k since the last tranny fluid change. Said he tighten the shift cable when it first noticed it was not shifting right and then it started to shift hard (squeal the tires). I ordered a rebuilt valve body assembly, came with plate, solenoid, accumulator and valve body. The supplier indicated this was the fix for my symptoms.

I dropped the pan. A bolt from the solenoid was in the pan. No magnet. The oil smelled more like axle grease, but did not really see signs of metal sludge in the pan or filter. Dropped all the components, yeah that accumulator plate is not for the faint of heart, I found all the rubber fortunately.

I found a couple decent pictures showing where they go in the tranny, the plate pictures were missing to many of the 'other' holes to use that as a guide. I saw a comment to use petroleum jelly to hold in place, I used that trick and it seemed to work. Put everything back together, torqued all the valve body nuts and bolts to 8 ft lbs, figure that is approx. 96 inch lbs and in the 80 -100 recommendation, new filter. Added 8 qts of oil back into the pan.

With it still on the stands started it up and went thru the gears down and up stopping in each one. Set it down and went for a test drive. Same exact behavior. Drive is first, can manually upshift to 2nd, put back in Drive at a slow speed and it goes to first, at a high speed it acts like it is in neutral. What I missed, do I have a clutch problem, or ?????

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Took it back out, found i built the Intermediate Clutch wrong. Fixed. At the same time, found a stuck valve in the accumulator VB, Fixed that, at least i think I did. all the valves snapped back under spring pressure.

Put the trans back in, Drove forward, all forward gears work. Drove 10 miles normally, w/ some time spent in all speed ranges. Temps good, outside temp was 73F

M1 = i get good engagement and engine braking

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