Hi guys,

I'm hoping that someone can help me out. I have an '06 Scion xA that I'm quite a fan of so far. However, I have encountered a slight problem.

The car starts and idles fine on a cold start. However, once warmed up, the idle tends to "hunt" a little, but only intermittently. It is by far the worst on a hot start (eg. after refueling), where it feels as though the engine is about to stall.

I have been battling an engine code (PO171, lean code) that only arises once again, intermittently, and only while idling.

The car has a Strup axle-back and a DC Sports SRI. I have already cleaned the MAF, and checked for air/vacumn leaks. I am considering going back to the stock air box, as none of these issues arose until I installed the intake.

Before I go back to the stock box, does anyone have any other input as to what might be the issue?

 

sounds like you need to clean your TB and the such

 

Can of Sea-Foam, New Plugs and Air Filter.

Do the cheap and easy things first.

 

I did the plugs, coil pack and new IAT but what actually fixed it was new motor mounts. Did all three. About $95 from Rock Auto plus $250 in labor.