where is the IACV located, on the throttle body unit or the side of the engine?

 

right under the TB, where the hose meets the TB butterfly section

 

There is a diagram in the FSM for a 2000 Maxima on page EC-503 or 509, depending on which version of the FSM you have.

 

My IACV is also bad and needs to be changed. But my TB doesnt look like the one in Puppetmasters pic. Is the 2k1 TB that much different from the 2k? I have a 2k1 SE.

 

its the same.

 

My TB doesnt have that part that is under the word "intake" in the pic.

 

what does a IACV do? does it help replacing it, i get 71000 miles on my car.

 

According to the 2001 FSM, its in the same spot.

 

I should have looked first b/f I posted but it was late last night. Thanks.

 

its not a maintenance item, dont replace it unless its givng you problems...

 

When you are not pressing on the gas pedal at all, on a fuel injected car, the throttle plate is completely closed (TPS at 0%.) Obviously, the engine has to have SOME air to idle, and to keep the engine from stalling when you take your foot off the gas.

IACV is a motor or solenoid that opens a bypass (passage) in the throttle body, allowing some air to pass by since the throttle plate is fully closed. In carbureted cars this was done mechanically with an idle stop screw or a kicker solenoid.

Bad IACV causes poor idle, no idle, or stall on deceleration problems.