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Chrysler Repair/IAC motor: 2.7L '04 Sebring

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Question
Roland,

I'm getting P0505 readouts on my OBDII - the Idle Control System.

I bought the following (the  first one has yet to arrive in the mail, the 2nd I picked up in the store)

http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_idle-air-cont

and

http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_idle-air-cont

However, I don't see where the 2nd one goes.  The first one, from the pictures on the website, appears to be what's attached to the throttle body.  

I'm thinking the second one, is the wrong part?  Do you have any idea what the second one is and can you confirm which one I probably need to replace?

I need a small Torx screw bit, I think to remove it.

Answer
Hi Michael,
There are two different idle air control motors for the car and so you probably got one of each. They function differently depending upon whether you have the 2.0/2.4 or the 2.7L engine, but they look very identical. Another way of saying they are different is that one of them is for the situation where the vehicle has a seperate powertrain controller with two plugs and a transmission controller (with two plugs) while the other situation is where you have a combined powertrain/transmission controller in a single package (and which has 4 plugs side by side). I believe the former is for the 2.7L and the latter for the 2.0L/2.4L but check that out at the parts store.
Other than there being a problem with the harness/wires that plug into the idle air motor, the only other cause of a 0505 would be a bad idle motor or a bad PCM. So check the wire harness from the plug back to the where it disappears into a larger harness for any signs of heat damage and finding none I would believe that if you install the correct idle motor it should solve the problem. I believe also that the 2.0/2.4 motor will have new o-ring(s) near the tip, whereas that point is not made for the 2.7L idle motor installation process.
Please 'rate' my answer (see below).
Thanks,
Roland

Chrysler Repair

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Roland Finston

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Get a Free Fast answer to your repair question about a Chrysler/Dodge/Plymouth car, minivan, SUV, or truck. Problems with electronically controlled engines and transmissions as well as body wiring problems are my specialty. This free troubleshoot advice forum helps you diagnose faults, minimize repair costs or do-it-yourself.

I answer questions seven days a week and respond to you in about 30 minutes. "Maxed Out" means I am answering another question, briefly unavailable, or asleep overnight, so try again later.

I have do-it-yourself experience (50+ years) and a library of 100 1982-2012 Chrysler factory shop manuals and 20 multi-manual Chrysler Corp. CD's.

I was voted "Top Expert" 2010-2015, here at AllExperts, and have answered 20,000+ questions.

Experience

Five decades as a 'do-it-yourselfer' on domestic and imported cars.

Organizations
Yahoo Autos Group called The Chrysler Lebaron Club (co-moderator)

Education/Credentials
Advanced degrees in Physics/bruised knuckles

Awards and Honors
"Top expert" of 2010, 2011, 2012, 2013, 2014 and 2015 here at Allexperts. Quickest "average response time" at Allexperts (currently no. 1).

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