Acceleration problems

Just changed the transmission with a used one that supposedly had 140k. A little back story, purchased the car without a transmission, the car had been sitting for two years in a garage with original owner and 1 year outside with me. The car has problems accelerating from stop and up hill but no check engine light. Any ideas

 

Car or do you mean truck?

 

Fluid level, linkage not adjusted right, bad transmission. Lots of possibilities.

 

Previous threads somewhat related in last month for reference....

2003 3.4 2wd

Acceleration issues

Toyota tundra transmission

 

You know the definition of insanity ...

 

or DeJaVu

 

My dumb a... er um silly butt even responded twice, and I forgot

 

So since the last post I removed and returned that transmission and put another used transmission, the previous transmission had a grinding noise that was the torque converter and also transmission issues, this one has no grinding noise but does have problem accelerating and going up hill. Hooked up the computer and it gave me a code for p0031 bank 1

 

P0031....Oxygen (A/F) Sensor Heater Circuit
Low (Bank 1 Sensor 1)

 

I’ll take a look at that, change the 02 sensor and see if that fixes the problem

 

Gonna need to go into more detail here. All we know is that you have "the car" what year, what body style, what engine etc would help here.

 

2003 Toyota tundra 3.4 2wd

 

I'll bet it's just the O2 A/F sensor since there's only one on the V6.