2007 Tundra Transmission problem

I have a 2007 tundra 5.7 with 261,000 miles on it. Recently when I come out in the morning if I don’t let the truck warm up it shifts in reverse fine but then when I shift into drive nothing happens until it sits and warms up for 8 to 10 minutes, if I warm it up before shifting into reverse, it works fine (works fine the rest of the day). I know I have a transmission leak which I’m going to get repaired but I’m hearing a lot of different things from garages etc. anyone else with experience with this?

 

If you have a leak, you are probably low on fluid. Low fluid level can cause what you are describing. I would check the fluid level.

 

I'd start at checking and adding more fluid

 

Suspecting the OP doesn't know the specific Toyota Tundra Gen. 2/2.5 transmission fluid level checking procedure..........and it is a VERY DETAILED & SPECIFIC process.......here's a video summary. If a dealer or GOOD shop or GOOD friend is involved they may have the Toyota proprietary Techstream computer software that allows you to monitor trany fluid temp on the laptop and not via the dashboard as the video shows you.

 

And if that doesn’t work try new speed sensors, or better yet swap them and see if it improves. The beck/arnley on Amazon are actually aisin (oem). Oem are on back order. I had some weird shifting and changing fluid didn’t help, but swapping those sensors did - so I replaced both.

 

I kept getting conflicting temperature ranges for when to check the trans fluid. Each Youtube video or service recommendation had different temperature ranges for when to open the overflow port and when to plug the port and let the fluid cool before checking.

I opened each of the attachments that Brums provided above.

Here are the temperatures in Fahrenheit for each transmission type.

TIS shows 5 different code transmissions for 2012:
A750E - 97 - 115
A760E - 127 - 138
A760F - 127 - 138
AB60E - 99 - 111
AB60F - 99 - 111

You can find the code for which transmission is in your truck of the inside of the driver's door. It is in the lower left corner of the sticker.