So a couple weeks ago I started noticing that my transmission couldn't decide on the right gear to stay in... typically when feathering the throttle in the 1500-2000 RPM range. I figured overdrive was having an issue so I started just putting the transmission in 4th gear when surface street driving and then kicking it into D when I got up to 60 or so on the highway. It's been a while since I changed the ATF, maybe 80-100K.
I decided my first plan of attack would be to do a soft swap of fluids: drain and drop the pan, clean the screen and then refill. It's helping but after discussing with some friends at ACC it looks like it may be a stuck solenoid. We scanned it with Techstream and there are no codes in the ECT, so we're flying blind a bit.
Cleaned up the pan and screen before putting it back together and it looked remarkably pristine upon initial examination. The residue was a carbon black but very very fine and just a small amount of film stuck to the magnets. An even finer "patina" on the metal screen filter assembly but it wiped right off.
I decided my first plan of attack would be to do a soft swap of fluids: drain and drop the pan, clean the screen and then refill. It's helping but after discussing with some friends at ACC it looks like it may be a stuck solenoid. We scanned it with Techstream and there are no codes in the ECT, so we're flying blind a bit.
Cleaned up the pan and screen before putting it back together and it looked remarkably pristine upon initial examination. The residue was a carbon black but very very fine and just a small amount of film stuck to the magnets. An even finer "patina" on the metal screen filter assembly but it wiped right off.