4.0 auto trans 90 ranger

[sytherstrike]

Today I was going down the free way and pushed the gas, it felt like I hit neutral, as soon as I let off the gas it went back into od and when I eased into the throttle it started acting normal again. I then got off the freeway and when I stopped at the light at the end of the off ramp, nothing nadda no go. I shut the truck off put on my 4 ways. I waited about 15 minutes and decide to try one more time before calling a tow truck. So it hesitated but went into gear and shifted through all gears with slight hesitation in each one. I than did a trans flush and fill, just to see. I do the flush and fill and the hesitation is almost gone, but I have to manually shift into od. Its weird cause I can start in normal drive no problems shift up to third no issues, and then manually put it in od and its all good, but if I put it in od to start its like its in neutral. I figure my trans is prolly toast and needs a rebuild anyways, but it just seems so weird I've never had a trans act like this before. Do you guys have any ideas on whats wrong or could cause this?

 

[link040188]

sounds like thats what happened to mine i overhauled it and the converter had damage so it was replaced and the pump too it was letting fluid go back so it didnt have pressure to shift

 

[Bruce]

Sounds like OD sprag is bad or getting bad..in od the od sprag holds and in D or low the overrunning clutches turn on.

 

[sytherstrike]

Well I did some searching and found a manual transmission at my local yard for 300. They said they had a few manual rangers out in the yard so I can rob the clutch master and slave and pedal from their. Now I'm a bit confused on a few parts of this. The manual is from the same year truck as I have a 90. Now will I piss my computer off by pulling the automatic, or will it be ok? Also will I have to change my drive shafts?

 

[cocoasranger]

I put a Mazda manual trans in my 89 4X4 2.9L Ranger and kept the auto computer without anything bad happening. Some posts say it will throw codes, but I never checked that so I don't know (or care). There is also something about the manual computer shutting down the injectors when you shift resulting in about 1/2 mpg better mileage than when leaving the auto computer in. I don't think that is enough to worry about; just make sure your tire pressure is right and drive reasonably and it more than makes up for it.