IAC issue VX II V6 3.8

[lout]

iac position is set when you turn the key off on V6

 

[kais3r]

Tip is same size, big enough to seat or end stop without going through the air intake lol, ouchies.

 

[kais3r]

What does everyone's car rev up to on initial startup, like in the first second? Mine seems to peak at around 1500 then drop down to 900 with a cold engine. Just thinking it should normally only reach 1000RPM.
Can see this live on the computer display by holding MODE+UP while Turing on ignition, then tapping MODE 10 times then starting engine.

 

[edals]

Most cars rev up to 1500 rpm for the first second then drops. The Yaris I drive for work cold start is around 2500 for a good few seconds before it starts dropping. If it's only a second and drops around 900 when cold it's fine. So long as at warm temp it sits between 650 and 750 don't worry about it.

 

[TI3VOM]

From memory, you need to rev the car at around 2-2500rpm for 20 seconds or something like that, when you first change it over.
Plus there are two types of IAC valves, one is longer than the other.

 

[kais3r]

Ok thanks, it might just be till the engine creates a vacuum condition as to why the first second is so high on revs. Still would prefer it lower if it were possible.

 

[kais3r]

Plus there are two types of IAC valves, one is longer than the other.

What is each one designed for, Different models? Do you know which each is meant for?

 

[Nut Kracker]

 

[kais3r]

Are those instructions for a VT cause this Pintle is out 29mm according to those measuring lines and there's still heaps of room for it to go out further before it hits anything inside the IAC housing on the throttle body.

I've also seen the IAC motors from VTs have a smaller Pintle diameter than the one in my car, was there a change for the series 2 VX? Maybe there was a different version for this car over the VTs.

 

[kais3r]

From what I've gathered 28mm is the right distance it's meant to be out for startup so seems to be ok.
My whole topic was regarding peak revs on startup, as I mentioned idle was fine. Just goes up to 1500 for the first second before coming down to normal quickly.