Hello all. Does anyone know where the IAC valve is located on the 2.0L? Many thanks for your help.

 

I do not think our cars have an idle air control valve.

 

Thank you for the info. Any of you guys have issues with the MAF sensor or throttle body?

 

Still having the issue with the start up, idle for a second, and they laying down on you?

It could be the throttle body, but usually faults with that will set a code/codes, the same holds true with the MAF.

Are you running a K&N filter or another brand of oiled filter element? Oil droplets can find their way to the MAF if the filter element is over oiled, those droplets will then contaminate the MAF and affect its readings.

 

I have a K&N cold air intake and air filter on it. I haven't oiled it for six months. I removed both to see if there was a difference and there was none. I read that a IAC valve could be the cause of a shutter/wanting to stall and a puff of black smoke from the exhaust at start up, which mine is doing. Yet, our cars don't have one. Do we have a IAC sensor?

 

IAC is a function of the electronic throttle using feedback from the MAF, combined with data from the engine temp sensor. This system also regulates fuel pressure at idle from approximately 752 psi to 2,250 psi at WOT(Wide Open Throttle).

A slight lag in the response time of the fuel pressure regulator will result in black smoke in certain conditions, cold start, WOT, engine overrun when the throttle is closed suddenly during shifts at or near WOT. Its a trait of DI engines.

I'd take it back to the dealer and insist pretty strongly that they get their best diagnostic tech to put it on a real time scope. With the proper scope and a well trained tech, the solution to what seemed like a cut and dried case of fuel pump failure, will be more readily apparent.

 

Sounds good Mike, that's what I'm going to do. Thanks again.