Truck runs fine for 15 min after unhooking battery

OK this is Jimnus i’m 54 years old with some mechanical skills and zero computer skills I bought my 07 tundra Neew for my wife because she traveled with her dog shows but when I got to 120,000 miles she refused to drive it so I happily took it I did have a little fender bender in itA couple years ago and got to know the front end very well because I completely dismantled it and rebuild the front end To everyone’s amazement it runs and looks fine are used to run fine needs a paint job though I picked the only color that cost $500 a quart that’s just my luck anyhow that’s a little bit about me and the truck

 

Welcome!

 

Yes the question was I’m having What I think it’s an electrical problem I had three codes come up mass airflow sensor 02 sensor and right bank of fuel Injectors. After changing the O2 sensor and a mass airflow sensor the truck will run fine for 15/20 minutes 15/20miles and then go back to running slow. The local garage says I need a new fuel injectors $2600 but if I unplug the battery let it sit for 15 minutes hook the battery back up in the truck will run like new for that 15 or 20 miles I could do this all day unhook the battery runs great for a short period of time. I’m just thinking if the fuel injectors were bad it would not run good at all that’s why I do not think it’s a fuel injector problem

 

Is it possible that the fuel pump is getting hot and quitting?

 

Welcome aboard from The Pacific South West.

 

I would find a new mechanic or at least get an app like Torque and see what the O2 sensors are doing.

 

Well, it's not because it's a lame-azz flex-fuel engine, because that didn't start until 2009. Have you tried a good thorough cleaning of the throttle body?