Unless you were worse with it than I was, it's not screwed up and you didn't need to pay Nissan almost a grand for a new one if you thought you did. I mean I did it all: you know that screw they say "do not touch" because it's "factory adjusted" ? Touched it. Took it apart. Took the butterfly valve out. Sprayed it with this, sprayed it with that, you name it.

Turns out all you have to do is do the idle air relearn. All you need to do is either go to the dealership or try it yourself with a Bluetooth thing or connect it to a computer or whatever, and do the idle air relearn.

I think removing the throttle body to begin with sets something off in the ecu that requires it to be recalibrated after regardless of what you do to it, because I've read about people here doing much less to their tb while cleaning it than I did and they had to replace the whole thing.

Maybe the dealership knows this and every time they replaced a tb, they also performed the idle air relearn and made it look like replacing the tb fixed things as opposed to just the relearn on its own.

 

Yes, that's all that's to it.
On the 2000 Maxima you don't have to do even that because the TB is controlled mechanically.
From 2001 on however, the TB is electronically controlled by the ECU. So, if you touch it/change it you have to do the re-learn so that the ECU is in sync with the new TB position.

 

mine's a 2000 GLE with a Nov11/1999 production date, is it the mechanic or electronic one? I honestly don't know. It *looks* mechanic, but considering the circus I had to go through it behaves like an electronic.

 

3.0L are mechanical, the TPS is of course electric.

3.5L are fully electric.

​​