Is it possible to have a bad TPS sensor even if everything checks out?

 

What makes you think that its the TPS? What is your truck doing?

 

I think it's just a variable resistor and if the voltages check ok....it has to be ok. At least that's what I'm learning..lol.
You could have a bad lead or plug from it maybe......not getting the voltages where they are supposed to be. It's part of a circuit and has to go somewhere.

 

whats the truck do??

 

Surging idle at when the truck is warmed up, I just can't figure it out...

 

IAC?........Cleaned or replaced and many talk about cleaning the TB also......might help some.
Small Vacuum leak might cause it too....
Good Luck