IAC movement on power

[clacker]

Hi Guys,

When the car is turned to the "On" position, should the IAC open fully and then back again?

Mine only opens slightly and I've tried cleaning it.

Thanks

[njerald]

I've never watched my Intake Air Control Valve operate...does it stay open when voltage is applied?

[clacker]

Originally Posted by njerald

I've never watched my Intake Air Control Valve operate...does it stay open when voltage is applied?

I'm not sure, I've only tried it with key set to 'On" and the iac removed from the TB but still plugged in.

[new echo owner]

Are you cleaning it because it doesn't move or are you trying to get it open to clean it?

N.E.O.

[clacker]

Originally Posted by new echo owner

Are you cleaning it because it doesn't move or are you trying to get it open to clean it?

N.E.O.

I took it apart to check how smooth it was moving so cleaned it while it was apart.

My other car opens the IAC much wider on start but I know that doesn't mean anything.

I was just hoping to get someone else who had seen it moving when off the TB to see if it opens fully or just a few mill before dropping to leave 1-2 mm air gap ready for start.

Idle is often OK so I think it is something else but I thought it's worth an ask.



Thanks

[new echo owner]

What year is your car?

N.E.O.

[clacker]

Originally Posted by new echo owner

What year is your car?

N.E.O.

2002 2AZ-FE.

It's Australian..there were some differences with the cooling system compared to the service manual so it's possible something may be different on the IAC as well as I can't see a reference to it.

Thanks

[new echo owner]

There are difference, 02' 2AZ-FE here don't exactly have a IAC, it has ETCS, Electric Throttle Control System, drive-by-wire. I think it goes to a determine position during start up, and then varies from there. IAC is about the same way though, it doesn't necessary open up all the way.

N.E.O.

[TRD VVTi]

What IAC? I'd bring the car to a professional that knows what he's doing and which parts are which.

[new echo owner]

He is from down-under, maybe they do have IAC on ther 02' 2AZ-FE. Just because we don't have it here,not going to say they don't have it down there.

N.E.O.

[Cody the Mechanic]

if there is nothing wrong with the way the car functions, then dont worry about it. it may be opening halfway because thats the most the car needs it to open for the check.

[clacker]

It's definitely some from of air controller. It has two ports with a cylinder controlled by a motor that opens and closes to control airflow. It sits on the top of the TB towards the middle of the engine.

The idle is worse when warm so I'm doubting now that it's the IAC. I'm going to try cleaning the TB on the weekend but when I took the intake off, it didn't look that dirty.

Thanks

[new echo owner]

Doesn't look like it has ETCS, looks like there is a cable on yours. Here is a diagram of the ETCS on page 6: http://www.camrystuff.com/manuals/Ge...rol_System.pdf.

N.E.O.

[clacker]

Originally Posted by new echo owner

Doesn't look like it has ETCS, looks like there is a cable on yours. Here is a diagram of the ETCS on page 6: http://www.camrystuff.com/manuals/Ge...rol_System.pdf.

N.E.O.

Yeah my TB is different.

Thanks for not assuming like TRD VVTi.

Hopefully someone from Australia or another country with similar setup will be able to confirm the IAC operation.

[TRD VVTi]

Originally Posted by clacker

Yeah my TB is different.

Thanks for not assuming like TRD VVTi.

Hopefully someone from Australia or another country with similar setup will be able to confirm the IAC operation.

I didn't assume anything. It's not smart to try and work on a vehicle when you don't know what you're doing...