So I had my 05 GT auto tranny rebuilt to the tune of $3800 plus taxes. Which I think is a ripoff to begin with but to top it off I don't think they knew what they were doing. I took it to Lyons transmission. I had heard good things about them. Anyways the issue is that pressure inside the tranny is at 50 psi where its supposed be at about 150psi. They tried many things to get the pressure up including different valve bodies with no change. I means it drives OK, just feels a bit sluggish to shift gears.
Anyways anyone have an idea what could be the issue? I'm supposed to drive it for 2 weeks and go back to the shop and let them know what I think. They thought it could also be an issue with CPU needing to learn my driving habits. But that didn't seem make any sense.

 

Wow. I haven't had to rebuild or replace my transmission yet, but that amount seems insane. I've seen them on Craigslist for less than half of that.

The PCM does take a little while to learn your driving habits after losing power, but there shouldn't be a major difference.

Getting a tune will firm up the shifts, so I'd think it's all controlled by the PCM.

 

do the Ford automatics still have a throttle valve cable?

the older ones were very sensitive to TV cable adjustments... my mark VII just moving the cable a serration or two on the adjuster was a Jekyll/Hyde difference... the TV on my old camaro was all important too...

Auto trannys can get insanely pricey... my camaros th700r4(85) has the original inferior forward sprag fail, my 8 yr old son helped redo it- 15 bucks for a used (improved 86-up) sprag, 50 bucks for soft parts, a bunch of oil, a few evenings time was all it took, luckily TC and bearings were fine... $85 transmission rebuild

funny story on the sprag- I pulled it apart, not knowing wtf was wrong with it, pulled the sprag and thought huh? I still had the first revised part in my toolbox- we built a drilling machine to drill the 3 lube holes on the new angle for the revised part in 86, we were supposed to drill parts for a few weeks until toledo hydramatic got their new machine onlne- we ran over a year and toledo bought our machine to replace the 1.2 million dollar inline transfer machine they'd bought that they couldnt get to work... I built that little dial drill machine out of old transfer line parts they'd paid us to haul away years prior from Parmas tranny plant... it was only a desk sized thing with a 17" table, ran a part every 5 or 10 seconds - their transfer machine was slower and the electrical enclosure alone was 3x the size of our little machine... I went up with the machine when they took it, could NOT believe how much money theyd wasted on the overcomplicated inline transfer...no wonder cars cost so much
Anyways when I pulled that busted up sprag out and saw what 'our part' replaced thought it was funny as heck...

second time for me too- went to IMTS show in '90, saw the same sprag having the face keys cut on a 'WERA Profilator"...weird machine- both part and tool rotate, come together, gearing causes the arcs to form line contact cutting perpendicular slots on the face of a rotating part... the tooling geometry goes from positive to negative thru the cut, but it made a nice looking part- cut 6 keyways in the face of the part in 1 second...one impressive piece of machinery, still makes me scratch my head thinking about it... German machinery/innovation can be pretty amazing

edit- sorry for the hijack, but thinking about that WERA machine again, just had to show this- isnt this a wild way to do face milling straight lines on a round part: