Question about Subaru Impreza
My car has shifting problems when its cold its a 4 speed auto trans with overdrive and when its cold it gets stuck into 3rd until its warms up a little 4th will start working and then a couple of miles later after it fully warmed up overdrive works. i changed the fluid and the filter. when its warmed up it shifts like a new one very smooth
Too heavy a motor oil can cause hard shifting also,but when its cold out let your car warm up longer before you take off,it might help
Posted on Jan 19, 2013
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Posted on Jan 02, 2017
SOURCE: overdrive lockup
On the passenger side of the trans there are two servos.A servo is a steel piston with rubber lip seals bonded to the steel.The servo piston strokes in or out,applying or releasing a band.There are two servos,each hidden behind circular aluminum covers held into the case with snap rings.The rear servo actuates the 2nd gear band,and the front servo actuates the 4th gear,or O.D. band.The rubber lip seals on the servo pistons are soft and pliable when new,but with hot and cold cycles,and years of use,the rubber hardens and doesnt seal very well,causing loss of gears.It is very possible the servo has hardened,and that's why you are losing 4th.The other possible cause is electronic.This trans,the A4LD has 2 electrical solenoids inside the trans,4th gear solenoid and lockup solenoid.These are the ONLY electronics inside the trans,another possible problem area.I would remove the servos first for inspection,but before removal,take a scribe and scratch into the aluminum covers,"F" on the front one,and "R" on the rear one.These servos are different diameters,and MUST go back where they came out of.On the servo covers you will see cast into the covers 2 letters identifying the servo it requires....AB.....BB.....ZC...etc.These are examples,and yours will likely be AB and BB.If you DIY....use plenty of vaseline on the rubber lip seals,and the servo bores, to prevent cutting the new servo seals and O rings.Good luck.
Posted on Sep 09, 2008
Synthetic fluid is NOT recommended for your transmission. The best advice I can give you is to go and have the transmission completely flushed, and put the correct fluid, from Toyota, into the transmission. If you keep driving it with the synthetic fluid, you are going to damage the transmission beyond repair.
Also, get your money back from Sears.
I hope this helps you out. A FixYa rating for my assistance would be greatly appreciated. Thanks for choosing FixYa for assistance.
Posted on Jan 21, 2009
the solenoids are attached to the valve body. you nust remove the side cover to replace the solenoids. Your problem is probably burt clutches in the third clutch When you changed the oil was it black? this is an indication of burt clutches. only repair would be to replace the transmission.
Posted on Apr 17, 2009
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