Toyota 4Runner Transmission

[Big T]

2014 4Runner with Asian 750F automatic transmission at 336K miles. It is doing more hunter between gears at highway speeds and going up grades. Dropping from top gear done to next lowest gear even on flat terrain when accelerating. Seems more than normal. Any ideas? Is this transmission giving it up?

 

[Big T]

2014 4Runner with Asian 750F automatic transmission at 336K miles. It is doing more hunter between gears at highway speeds and going up grades. Dropping from top gear done to next lowest gear even on flat terrain when accelerating. Seems more than normal. Any ideas? Is this transmission giving it up?

From what I’ve read, these transmissions are notorious for hunting between 5th and 4th gears. I’m wondering if my wife just noticed it because she’s running ac in the warmer weather?

 

[Will L.]

Possibly that and the transmission is dealing with more heat since the cooler can’t shed it as easily.

 

[Big T]

104 going through Vegas. 107 in Baker. This. Is just gross.

 

[Will L.]

104 going through Vegas. 107 in Baker. This. Is just gross.

I can agree to that

 

[Big T]

I can agree to that

How many days over 100 does Vegas average per year?

 

[Big T]

So Vegas averages 74 days over 100. Phoenix averages 110 days over 100.

https://weather.com/news/climate/news/100-degree-temperatures-us-cities-average-most-records

It was 104 as we drove through St. George, Utah. It prompted me to comment: St. George exists for all the Mormons who are afraid of the cold weather further north. Another explanation is proximity to gambling in Mesquite or Vegas, NV. There is no other reason for St. George existence.

 

[Big T]

Further update: Transmission downshifted while coasting down a hill into Lahabra, CA. Don’t recall seeing that happen before. I estimate the hill at 1/2 to 3/4 mile long and of decent grade. Speed limit is 50 mph which is what we were going.

 

[Big T]

Further update: Transmission downshifted while coasting down a hill into Lahabra, CA. Don’t recall seeing that happen before. I estimate the hill at 1/2 to 3/4 mile long and of decent grade. Speed limit is 50 mph which is what we were going.

I found discussions on the internet about this and apparently it’s a standard part of the programming. Just haven’t been in the vehicle in awhile and I have my wife trained to point out things.