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Since Engine Swap Trans not shifting properly


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Since swapping my engine on my 01 Outback, now when accelerating my automatic transmission doesn't want to shift from 2nd to 3rd, it just hangs there even at 3500 rpm, but if I let off on the accelerator it will shift. Could it be a speed sensor?

Thanks

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Welcome to the USMB.

 

I'm going to move your thread to the new gen forum. Can you provide any additional information as to the new engine, why did the old engine get removed, did you do the work, did a shop do it, are there any warning lights, etc. ?

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Did you fill the torque converter BEFORE bolting it up? Any time you pull an auto trans, you should drain the old fluid from the pan AND the converter. Fill the actual converter back up so it's at least at spline level (pour in through spline opening). Then add a ballpark amount of fluid to the trans (like 75-80% of what it's supposed to hold, taking into account what's in the converter). Start engine, let it warm a bit, then manually shift from "P" to "R", to "1-2-3-D", back to park, repeat again, then check dipstick levels. If too low, add a little more and repeat the process again, recheck level. Keep doing this until it's in the correct range. Do NOT overfill.

 

 

Not doing this (or worse, installing the torque converter dry) can manifest trans troubles.

Edited by Bushwick
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