Like the title says, replaced IAC and now idle at 1500-1600 RPM. I have no knowledge when it comes to engines. Changed IAC on posted advice I found here on forum. Changed because engine would die at start up unless given gas for 2-3 min. IAC was black as hell, Durango has 144,000 miles. Engine is 5.9 L
Any help would be great and appreciated. Thanks.

 

Did you reset the PCM after doing this? My guess is you didn't, and your computer has to relearn now that it has the proper IAC valve working again

Remove the negative terminal of your battery (10mm wrench).
Turn your ignition key to START and hold it there for about 15 seconds.
Turn your ignition key to OFF and remove it.
Connect the negative terminal of your battery.
Start but do not hit the throttle. Idle for about 10/15 seconds then turn off.
Restart the truck and drive as usual. It will take at least 12 starts and 48 miles to fully retune the computer. Hard Codes leave a shaddow for 40 full cold starts.

 

Clean the Throttle Body and reset the PCM.

https://dodgeforum.com/forum/1st-gen...ttle-body.html

https://dodgeforum.com/forum/1st-gen...ine-light.html

 

Yeah WhiteWidow I did that. I saw it on the post that led me to change the IAC.
Think I should do it again?
On my road, the Speed limit is 40mph. Now that is where it idles.
Thanks for getting to me sooooo quick, espically while playoffs are on.

 

I used these 2 forum post? as my outline.
I think I will try to reset the PCM again.
Thanks for answering so quick hydrashocker

 

And also make sure you clean out the IAC PORT as over time there can be sludge that accumulates.

 

When resetting engine code, Turn your ignition key to START and hold it there for about 15 seconds.
Does this mean Start, to hold key like I am trying to turn the engine over?Or does START mean, turn key to ON position?

 

I just went out and checked the code, this is what came up.
P0505 Idle Air Ctrl Motor Circs
Also, I start Durango, let it idle. If I so much as touch the gas pedle, it goes up to 2300 rpm and stays there until I put it into gear.
Man I hope I didn't screw up bad.

 

Yes it means you are supposed to turn it as if you're starting the truck.

You didn't extend the plunger because you're not supposed to touch the IAC plunger as it can cause problems.

A P0505 code is due to something messed up with the IAC unit so I'd take back the one you just bought and tell them ira defective and get a replacement.

 

Thanks. I will take it back to Auto Zone and get a new one. Sucks because its 70 miles one way. Had the new one picked up for me. I'll def. take it back. Thanks WhiteWidow and hydrashocker.