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Thanks for the reply, tried the stall test. Engine will not go over 2500. Tried it several times, even did forward and reverse. When I can get a second body to help I plan to check wires from the ECM to the trans with an ohm meter.

I posted this over in the VB rebuild area but I think that may be the wrong place. Here is what has/is happening. 1996 Ranger 4.0 4R55E, 170,000 miles. Rebuilt May 2014, new torque converter, epc, clutch plates, (not steels), new OD drum, new OD and Mid bands, new OD and mid pistons. Ran...

Not the sprag, if that were bad I would only have forward when manually in low gear. I went in Tuesday evening and swapped out the coast clutch solenoid with a spare. I also took a chance and replaced the ECM with one from a salvage yard. It was $50, didn't make a difference, I figure I can...

I have a 96 ranger 4r55e with strange behavior. I rebuilt last year and it was working great until about 3 months ago. Started acting very strange, pulled the pan and found insulation missing on several wires in the harness causing shorts. Replaced the harness and all seemed fine at first. I...

I have a 96 Ranger with 4r55e, rebuilt it and replaced vb gaskets, also the torq converter and EPC solenoid. Was working fine for about a year until it starting having strange issues. Took it apart and found insulation on the wiring harness was cracked and falling off causing shorts. Replaced...

I have a 96 ranger with 4.0 and 4R55E, 150,000 on truck, unknown about the trans. When I bought it there were some trans issues and I expected to put in a full rebuild. Reading this forum, and having purchased a used core trans to rebuild lead me to believe it may have been a VB problem. Here...

I have a question about end plugs, specifically the one on the forward control. I bought the Transgo kit which replaces a spring here. This plug pretty much fell out when the retainer was removed. The plug measures .440 and all of the other similar holes measure .442. This hole measures .460...

Should delete, posted in wrong thread.

OK, I made a mock up of the bushing on which the rear sprag rides and the light bulb has lit. I now understand that first gear comes from the reverse ring gear driving the shaft forward and not from the forward planet carrier as 2, 3 and OD do. As I said before, a truly amazing contraption...

Thanks for the reply. I am currently leaning toward a valve body problem. I have the 44 trans all in pieces and now that I understand how it works I do not think there are any problems in the gear train. Plan to do the VB on Memorial day weekend. I plan to post youtube videos of how the...

Thanks to both replies, I am in Melbourne. I still do not grasp where first gear comes in. As I see it the low sprag simply prevents the reverse drum from turning backwards, freewheeling in forward. I will make a mock up of it and play with it on the bench tonight. As far as the rebuild. I...

I have spent quite a bit of time looking for this answer but so far no luck. If it is already posted please point me in the right direction. I am trying to get a better understanding of what happens inside this transmission (4r44e). I purchased a core with the intent to rebuild it and...

I have read a lot of forums that indicate the 4R44 and 4R55 are essentially the same, the 55 having extra clutch plates. I know that several have gone from 44 to 55, I am actually attempting to go the other way. I have a 96 Ranger with 4.0 having issues. I also have a core trans from a 95...