I recently got some new tires and had to re-flash my computer to calibrate the speedo. Now I'm getting a CEL with the PO506 code.

The code is valid, (Idle lower than expected) as the idle is running low at about 650RPM.

I have cleared the code and re-flashed with another tune with no luck.

As per the service manual, I plan on clearing the KAM memory today, which should prompt the car to re-learn the idle set points. However, I'd like to inspect the idle air control valve. The manual does not show the location of the IAC, or even what it looks like! I remember what the one on my 1992 Stang looked like, but nothing is similar on my 05.

Anyone seen this thing?
What does it look like and where is it exactly?
Be specific... I'm slow but accurate.

 

As far as I know , there is no IAC valve on these cars ...

 

The "official" Ford service manual/DVD indicates there is one.
But I'll be damed if I can find it, and honestly I think your right.

The service manual I have covers most every Ford made.
Just maybe they got things confused?

 

I was told by a service manager at a local dealership that the GT's do not have the IAC. I was having issues w.my car stalling because my RPM's where to low. I had them clean the TB and my car seems to be ok now. Doug from Bamachips did post a thread about that scenario in here.

 

I have the same thing. Reflashing just turns the light off for a few days. It's my understanding from searching the forums on several sites [and talking to my trusty mechanic] that it is a throttlebody problem. Under warranty the dealer will replace the whole thing as the IAC is integral to the aluminum casting and isn't repairable.

If you're out of warranty, look at it as an encouragement to buy aftermarket or get bold and take the thing apart and see what you can do with it.

Good Luck.

Mike E

 

Ooooohhh don't say that!
My stang just turned over 50K miles, and the warranty is long since past.
I cleared the KAM memory today at lunch. The idle seemed to struggle. Hopefully it is learning. I intend to clean the throttle body this afternoon. Guess if that does not help, I'll get to see whats inside the throttle body in detail. Nooooooo!

 

Yeah, I'm at 50k too. I am lucky with my mech here who will work on the thing on the side... Though he got me a good deal to extend a couple of months ago. I haven't brought it in yet though...

Mike E

 

Well I fixed the problem.

Seems cleaning out the gunk buildup inside the throat and around the butterfly valves, along with clearing the KAM memory has returned my idle to normal.

I figured that after installing an in-line filter into the PCV line, the gunk would no longer be an issue. Seems I was wrong. And perhaps the K&N style filter I'm using is not doing as good of a job filtering as it should. Regardless, cleaning my throttle body is now part of my maintenance program.

Hope my experience helps someone else out of this computerized mess.

 

cool.. glad to hear it all worked out for ya!

 

Up until recently when I started my car in the morning , it would idle around 1200 - 1400 RPM to warm up. Now it idles around 2000 RPM while warming up , so I wondered if this might be the cause. I pulled my throttle body off this weekend , and man was it covered in black gunk. I used the stuff that Doug found for us and it worked very well. Like Maurice said , looks like this will be a regular part of my maintenance ...