Tranny experts,
I have investigated so many things and now I'm wondering what you tranny experts think could be causing the problem.
The problem is 2nd gear slips in [D] and (slightly less) in [2].. Also
2-3 shift is sometimes delayed and harsh.This is a 93 camry 4 cylinder w/ 60kmi on a rebuilt A140e tranny.
If anyone has a good suggestion I'll post my result of the fix/test.
fwiw, here are my notes:
Shift feel
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1-2: a) normal bump/flair when shifting but 2nd slips. b) sometimes there's the normal bump, then it seems somewhat in second, then about 1 second later there's a second more noticeable 'bump' and it seems it is slipping much more now. This happens in [D], not sure about [2]. 2-3: sometimes delayed and harsh, especially if forced by letting off gas abruptly. 3-4: perfect 4-3: perfect 2-1: perfect 4-4lockup:perfectShifts all seem to occur at reasonable speed/throttle. Shifting w/ manual lever works like above.
Gear feel
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1,3,4,4locked: perfect, no slipping when given lots of torque, etc.2 in [D]: slips w/ any throttle, very light throttle will allow enough slow acceleration to eventually get into 3rd.
2 in [2]: Less slipping--Seems to not slip too much if using less than 1/4 throttle. Engine breaking feel seems minimal. Engine speed seems (only roughly) related to wheel speed (due to slipping?).2 going from [D] to [2]: Can't hear/feel one-way deactivating or break activating. seems to slip slightly less in "2 in [2]". Is one-way clutch engaged in both? Maybe air test the break on 2nd's one-way clutch?
The first day it did this it seemed to happen after warming up and while turning. After tests and extensive road tests 2nd seems to slip when cold too.
Tests
----- Torque Converter Stall: passed. (2450RPM at R and D) Engagement delay test : passed. (N-R < 2 seconds, N-D < 1 seconds.)
Electrical system : passed. Sol1, Sol2, SolL signals from ECM are good. Solenoids : passed. Resistance good. 70psi shop air causes only small leaking at 0V, air rushes with 13V. DTC : "Code 63--Sol 2 failed" existed when starting debug, but the sols were tested above to be good. Throttle cable : passed. Seems 'taught', +1mm and -1mm adjustment didn't seem to impact slipping 2nd. Hydrolic : pending.
Flushed full 7qt Fluid: No effect. Original fluid was dark but still smelled good. No hint of burnt. Valve Body : Rebuilt it. Looked clean, all balls, seals, gaskets, valves seemed superficially ok. Paid particular attention to
1-2 Valve. Didn't measure spring tensions. Rebuild didn't seem to affect 2nd gear slipping.--------- What do you guys think could cause this slipping? Anything new I should check? Anything I checked that I should re-check?