Before I start I just want to say that I've been searching like crazy for the past few weeks and everything I've searched so far just seems to be a dead end. Broken link, no pictures, etc.
My siblings and I bought my dad a 2000 Tundra this past fathers day. When we bought the truck the CEL was on. The owner said it was just because of the O2 sensor. He had recently gotten the frame replaced by toyota and had the engine replaced by another mechanic, so I figure it couldn't have been anything major.
About a month after I finally took the truck to autozone and found out it wasn't the O2 sensor. The code was P0770 or P0773, can't remember which but it was the one with shift solenoid E. The truck shifted fine so I didn't think much of it.
Now the transmission is slipping quite a bit from a dead start. Once you get it going then it seems ok. Starting in L or 2 doesn't work but once it's going you can shift it down and it will work. When putting it in reverse there is a big clunk.
My dad drained the transmission this past weekend and refilled. I drove it around the block a few times. When I stopped it was smelling pretty bad. So I drained the transmission fluid, the fluid smells burnt. I pulled the pan off and took off the filter.
So my questions is how many solenoids is in there and which one should I check? How do I check the solenoid? It seems like there are two wires on the connector, does it matter which one I apply power too and quick one I connect to ground?
Can the shift solenoid cause the transmission to slip or could it be the torque converter clutch? How hard would it be to replace that?
Here is what I plan to do.
1. Test and replace the solenoids, hopefully someone can help me out on how to do this.
2. Replace the filter
3. Refill and apply autoRX, hopefully the tranny will be good enough to run for 1000 miles
4. Flush tranny next spring