Just had the transmission replaced and while driving with cruise control engaged, the car shook and began slowing. Pulled over for a few minutes check dash for any clues and started back up. Noticed cruise light was not lite so pushed button again to reset it but did not lite or engage. Is there some corralation between these two?
It sounds like your cruise control shut off and that caused the shake and slow down as the throttle shut. Check the switch on the brake pedal. That's a common cause of cruise failure.
could also be the crusie control fuse and the new transmission could be installed incorrectly there could be a short circuit which kills the fuse
I answered in more detail in another thread - but basically, the Subarus seem to be very sensitive to low oil pressure, and a dirty oil filter might be the only problem. Sounds incredible, but I had exactly your symptoms, tried all sorts of thing, then changed the oil filter. Haven't had a problem since. Easy to buy a new one and find out!.
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