Hard down shift after atf flush
Brought my car into the shop to have a few maintenance work done (atf
flush, acc drive belt replace, pcv valve replace, spark plug replace and coils
driving it off the lot, I got up to 60km/h and then started to brake for a light,
the car dropped a gear either to late or too early either way it was noticable
shift in weight. My tranny was slipping a gear when downshifting. I assume
3rd gear to second.
I was told the car needed a relearn, and that i should drive it and it would
fix itself. nope. its been three weeks now, going to bring it back into the
shop now, any suggestions would be awesome? I cant tell if its getting
better or im getting use to it, but if i slammed on my brakes at 60 im scared
how hard the shift would be, trying to brake slowly but even then it will still
have a slight hard downshift. trying to coast into a downshift rather than
forcing a down shift I dont know,
im thinking a solenoid may need replacing or computer needs to be
reprogrammed but i was told the computer doesnt need work it needs time,
I dont like that answer :(
first thing i checked was the tranny fluid level its good, atf filter was changed, car bill included a little computer work what im not sure, second thought was my performance chip in obdi II port, rest the chip, no effect, after driving with the chip for a week, rest it again, now I have pulled the chip thinking it could be affecting the computer relearn process telling it downshifting now would be more effecient... literally any help is appreciated
It has been my experance that anytime a tranny is flushed something always happens internally, a piece of varnish comes loose and winds up in the valve body or a pressure passage, if it was a tranny shop that flushed it for you I would take it back and show what it is doing now, if it was a quickly lube place that did it then your going to have to go to a tranny shop and see if they can clean it or replace the parts that are crudded up. Probably won't be cheap.
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