Hey guys,

Friend of mine has recently bought AE92 Corolla Sprinter with 4age smallport. Engine is MAP sensored and air temp sensor is on the back side or intake. He is wanting to put in an aftermarket intake but wants to know what this is for?? Someone has mentioned previously it might be aux idle up control for when the A/C is on but can't confirm this.

Cheers

hello mate!this is the air temperature sensor!it sends signals to ecu by changing its resistance, as the temperature changing !

apsogosGTi wrote:hello mate!this is the air temperature sensor!it sends signals to ecu by changing its resistance, as the temperature changing !

Cheers mate but the Air temp sensor is on the other side of the intake pipe, someone else of my 4age page has mentioned it could be something to do with cruise control the sprinter has. Ha so who know's.

NZ4age wrote:He is wanting to put in an aftermarket intake but wants to know what this is for??

That's the ISCV (idle speed control valve). It is a PWM solenoid valve and
makes a sound like a tiny steam engine when it is operating. Problem will
be that the valve is designed to work in the moulded airbox, and it is pretty
much impossible to get it to work (connect an air hose to it) when you take
it out of the box.

The solution I found was locating the exact same valve from some random
Toyota in a junk yard. The difference was that the valve mounted externally
on the back end of the intake plenum, and it had air-in and air-out spigots
so that you could connect hoses to it. Mount one of them somewhere (plugs
into the same plug on the loom) and just connect it with hoses between the
intake duct and the inlet manifold. You can see the small hose that leads
from the airbox to the manifold in your pic.

Cheers... jondee86

jondee86 wrote:

NZ4age wrote:He is wanting to put in an aftermarket intake but wants to know what this is for??

That's the ISCV (idle speed control valve).

Cheers... jondee86

Cheers mate, that helps alot, will pass it on to my friend.