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I am new here with a 2003 Dodge durango 5.9l v8 2wheel drive. The car is making a whistling noise when in idle. The noise is coming from the iac valve. The valve was changed recently but the noise came back, is it possible that the brand/type of valve used is just not extending or fitting into the area enough and is causing air to leak thus the whistling noise? It is not a vacuum leak and definately comming from iac throttle body area. when I disconnect the iac there is no whistle. Any ideas?
Clean the Throttle Body with Carb Cleaner or Throttle Body Cleaner (making sure you clean the IAC port REALLY good), get a new TB gasket and reinstall.
i would think it would idle funny if it were leaking around the iac .. but i could be wrong .. just double check the gasket/o-ring and clean it well inside that port and around it on the mating surface..
@hydrashocker, there is not gasket on it only an o-ring.
@neogeo, Sometimes it does idle a little weird, kind go up in rpm then down, but nothing really major but noticeable to me.