I have a 01 Durango 4wd 4.7l, It all started when I stopped for fuel. I started it back up after getting fuel and it started idleing rough. If I put in it drive or reverse it will die unless I give it alot of gas. Now if i'm able to run every stop sign and get to a straight road it will drive fine up to 70 mph. I thought it was bad gas, so i drained the tank, used Heet still the same. I changed the plugs, air filter. cleaned throttle body, tested TPS. The idle air control valve seems to be working fine along with the MAP sensor. I'm lost it's throwing any codes, so if anyone knows what is wrong please help me out.

 

When you cleaned the throttle body did you clean out the IAC port? Usually it can get gunked up with carbon and cause it to stick and not let air through. Also, how do you know the IAC seems to be working fine?

 

i agree with widow there is no way that i know of to inspect the IAC and your symptoms fit it to a T

 

Punisher:
Before you go any further, how old is your battery?

Our Durangos are very sensitive to a dead/dying battery. Have it load tested, and replace if it comes the least bit flaky.

A new battery may very well cure your issue.

Don

 

My battery is about a year old. I tested the IAC with a volt meter. It tested out right according to the mechanic.