Hi everyone.
First off, the TL;DR version (too long, didn't read):
-Replace Valve body and internal harnesses with new ones
-Putting the car in reverse took about 5 seconds
-Didnt want to change up gears as readily as it should along with odd behaviour
-Ended up in limp mode/gear 3 where reverse going in instantly, but with the typical thud
-Throwing error P0732 Powertrain - Gear 2 incorrect ratio
It's a Hyundai i30 diesel automatic, built in Feb 2011. 4 speed.
Just replaced my valve body due to the typical issues. Replaced it with part number 4621023020, a new one from sparekorea.com. Also replaced with two wiring harness as I had to fix them in the past due to bad solder joints. Figured it was easier getting new ones at the same time
All seemed to have gone well. Turned the car on, all good. In fact it was running smoother than it has in a long while and more stable revs according to my OBDII scanner and Torque app.
Then I put the car in reverse... It took about 5 seconds to get in there, however it was very smooth and the car felt way more connected then it has for a long time. Placed in drive, and it went in immediately and drove off great... until I would have expected it to go in to second gear. The revs went up to around 3,000 rpm before it did, and it didn't feel right. It didn't seem to surge. It had issues with going in to other gears too. After going in to second gear it quickly changed to 3 then 4. After a few minutes, the gearbox went in to limp-mode and locked in 3rd gear. While in limp mode, it went in to reverse instantly, though with the typical thud.
The scanner showed P0732 Powertrain : Gear 2 Incorrect Ratio.
Any suggestions? My fear is I got some of the accumulator springs in the wrong spot! In my gearbox, the 3 together are green, and the one by itself was red. lol At least my P0748 and other errors are gone