|
Is it all gears? you usually loose one gear or sometimes two seemingly unrelated gears, due to a clutch or band going bad and starting to slip.
If, once it finds the gear, it stays there without issue, it may be something in the valve body, like contamination causing a valve to stick.
Being in Canada, I wouldn't expect you to manage to overheat the trans unless towing or loaded to the limit quite often.
|