[TimKidder]

Replaced 02sensors, idle air control, plugs. 2006 zx4. Does not stall with AC on. Shop now says it's a bad PCM!!! After they got 1000 out if us. They said they had the Ford dealer check it out. I don't believe them.
Any help would be appreciated.

 

[pirite]

IIRC p0171 is a lean code?

if thats the case, check for vac leaks before anything else. with the motor running spray down all the vac lines with brake clean or carb clean and if you do have a vac leak when you spray the hose the motor should start running like crap.