Trans shifting ?

[iamadam1122]

My 2000 limited 4x4 shifts smooth normal. Harder when cold which I read is normal, but it shifts hard when wide open and shifting at redline. It has 285's and an aftermarket trans cooler.

Does anyone else's shift hard at high rpm?

 

[Whitson Metalworks]

How long has the fluid been in the trans?

 

[iamadam1122]

How long has the fluid been in the trans?

I bought it with 118k, did a drain and fill, now it's at 127k.

I'm scared to do a full flush at the dealer.

 

[theizzardking]

I bought it with 118k, did a drain and fill, now it's at 127k.

I'm scared to do a full flush at the dealer.

there's nothing wrong with flushing your transaxel, the issue comes in how it's done, if the shop uses the cars own transmission pump to cycle the fluid there is no problem with doing a complete transmission flush, the problem comes when shops use these high power motors with detergents to cycle fluid in the transmission, as what happens is the higher flow causes things to break off and pack up in bad places , when using the truck or the
cars pump the transmission fluid is pushed through with the same force as if you were driving it.....

as for your issue, could be the torque converter falling to drop the hammer at the right rpm's as opposed to anything being wrong in the actual transmission itself , if it was a clutch plate it would be the same thing regardless of speed and rpm's, that plate would just fail to grab/clutch most of the time through all ranges where a torque convertor can fail to get the fluid pressurized enough in certain rpm ranges and cuase slipping, i personally wouldn't worry about it these are not drag cars and if your on the pedal that much you should probably build your transmission and torque convertor to match......personally i never stomp on it, it's always a long smooth acceleration to get where i want to be, i just don't see the need to rev the motor to 5.5k , just wait for them to pass and then get over or just take a chill pill all together.....

 

[nevada]

My 2000 limited 4x4 shifts smooth normal. Harder when cold which I read is normal, but it shifts hard when wide open and shifting at redline. It has 285's and an aftermarket trans cooler.

Does anyone else's shift hard at high rpm?

sounds normal.
every auto trans rig ive driven was like that.
higher rpms means higher line pressure.

 

[iamadam1122]

there's nothing wrong with flushing your transaxel, the issue comes in how it's done, if the shop uses the cars own transmission pump to cycle the fluid there is no problem with doing a complete transmission flush, the problem comes when shops use these high power motors with detergents to cycle fluid in the transmission, as what happens is the higher flow causes things to break off and pack up in bad places , when using the truck or the
cars pump the transmission fluid is pushed through with the same force as if you were driving it.....

as for your issue, could be the torque converter falling to drop the hammer at the right rpm's as opposed to anything being wrong in the actual transmission itself , if it was a clutch plate it would be the same thing regardless of speed and rpm's, that plate would just fail to grab/clutch most of the time through all ranges where a torque convertor can fail to get the fluid pressurized enough in certain rpm ranges and cuase slipping, i personally wouldn't worry about it these are not drag cars and if your on the pedal that much you should probably build your transmission and torque convertor to match......personally i never stomp on it, it's always a long smooth acceleration to get where i want to be, i just don't see the need to rev the motor to 5.5k , just wait for them to pass and then get over or just take a chill pill all together.....

Thanks, do you think the Toyota dealer would be willing to flush it that way?

I usually don't get on it either, it doesn't really move any faster than half throttle lol. Just wanted to make sure nothing is wrong.

 

[theizzardking]

Thanks, do you think the Toyota dealer would be willing to flush it that way?

I usually don't get on it either, it doesn't really move any faster than half throttle lol. Just wanted to make sure nothing is wrong.

haha, yeah like others have said your probably fine, it's just the nature of being in the higher rev's , that said i can;t comment on how the dealership does thier trans flushes, i usually just go to a jiffy lube type place grill the guy for a minute on how they do the work, what they do and what they use then go from there, most of the time the 1st shop i stop at will do as it's not like they are replacing the filter or anything like that, just cycling fluid, is not that big of a deal.

i would say if you plan on going to a dealership then go on ahead, if they screw it up it's on them, that's the one saving grace of dealership work is they (most of them) actually fix their mistakes...at least a good one will....