.........into second gear. it does it even worse under WOT. The hard shifting gets less noticeable throughout the gear. Its mainly 1st-2nd. Any suggestions or experiences with the auto trans. The car is an NA and will be converted in aout a 1.5 years when I rebuild a turbo engine and trans from bottom up as my next winter project. First I need to fix this for next summer so it doesn't piss me off.
Auto trans shifts hard.......
- Thread starter Suprastic
- Start date
my sisters car was shifting hard for a while and she was low on tranny fulid and i added more and the problem went away.
shifts very hard when driving normal and "whiplash" hard under WOT. Infact under WOT when it shifts into 2nd the back end swings out like some insane beast. Its kinda cool but cant be good for the trans. I've driven other cars in auto and none shift nearly as hard as this.
My '89 n/a with some light mods shifts hardest at the 1-2. There is nothing easy to do to soften it.
For normal driving I usually just wait until its in 2nd to hit the gas harder. :biglaugh:
For normal driving I usually just wait until its in 2nd to hit the gas harder. :biglaugh:
Ok, pay attention cause I been through this myself and I've dealt with just about every bad thing your a340e auto trans can do.
First of all, did you check the codes like I suggested in my previous reply? No, of course you didn't. I can't help you if you don't listen.
CHECK YOUR CODES!!!
What your probably going to find out is that either one of your speed sensors is malfunctioning (most likely) or that your shift solenoids or lock up solenoid is malfunctioning. Cant fix em, you have to replace them, although sometimes they're clogged up and you can clean them out or it's a matter of fluid getting past the O rings that seal them in your valvebody and you might try replacing the o rings. Also, unplug your ect (behind the passenger side kick-panel) and do the manual shit test. All this stuff is covered in the auto trans section of TSRM online.
Bottom line this is what you have to do or you're just going to be chasing your tail.
Don't bother to thank me.
First of all, did you check the codes like I suggested in my previous reply? No, of course you didn't. I can't help you if you don't listen.
CHECK YOUR CODES!!!
What your probably going to find out is that either one of your speed sensors is malfunctioning (most likely) or that your shift solenoids or lock up solenoid is malfunctioning. Cant fix em, you have to replace them, although sometimes they're clogged up and you can clean them out or it's a matter of fluid getting past the O rings that seal them in your valvebody and you might try replacing the o rings. Also, unplug your ect (behind the passenger side kick-panel) and do the manual shit test. All this stuff is covered in the auto trans section of TSRM online.
Bottom line this is what you have to do or you're just going to be chasing your tail.
Don't bother to thank me.
Or his throttle pressure is too high. That is adjustable. If you have recently been on the throttle body, and moved it, that is a possibility. Shift quality isnt affected really by the shift solenoids, only timing. Same with the TPS input.
The lock up solenoid is possible, but often the car will stall when trying to start off if the converter is locked.
The lock up solenoid is possible, but often the car will stall when trying to start off if the converter is locked.
Nick M said:
Trust me, if the solenoids are clogged or non-op or leaking through the O-rings it will do exactly as suprastic describes i.e. hard late shifts.
TPS is a possibility for erratic or incorrect shift points but not likely to produce the symptoms described in this thread.
Read your own reply nick, "shift solenoids only affect timing" what do you think a late shift is? :nono:
And as far as the lock-up solenoid goes, it is far more likely that if this solenoid goes bad the torque convertor will not lock up or lock up erratically rather then stay locked up which would cause the car to stall, but again, this isn't likely.
Also possible is stuck accumulator(s). If you find no codes (I doubt it) pull valve body and check accumulators.
Again, the first thing to do is check for codes so at least you have some kind of info to (hopefully) put you on the right track.
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I missed it where he said it was shifting late. Show me again.
Since shift quality is determined by the throttle cable that is the first to check. It requires no real thought or tools. Of course he should check for codes.
That is what I said.
What should I do? Take pictures of the A340E/F (f is 4x4) that I have taken out from the converter stuck due to the lock up solenoid? Im long gone from Toytota, but trust me, it is much more common or possible than you think. Stay on the subject and not on some worthless tangent.
Nick M said:
What "worthless tangent" are you talking about...no I take that back I don't care.
Hey Mr. Agro...relax, lifes too short. You're gonna give yourself a thrombo.
So we have a difference of opinion, so what? You got yours and I got
mine. But I'm not insulting you...yet. I don't care to have a pissing contest with you. So keep your comments general and don't aim them at me. I don't give a f*&@ what you think about me and neither does anyone else...ok? Back to the thread.