Cold Starting problem

[PKRWUD]

Don't spend the money yet. First off, your egr is supposed to be closed at cold idle. The egr introduces exhaust gasses back into the combustion chambers to lean out the engine. If it opens when cold or at idle, the engine will stall. Before you replace it, try disconnecting the vacuum hose to it and see if there is a change. If there is, hook a vacuum gauge to the hose and see what it reads. There shouldn't be any vacuum, and if there is, you need to check the egr position sensor. If unplugging the hose to the egr did not make a difference, apply and release vacuum to the egr several times. This will stall the engine if it's running, so do it with the engine turned off. After doing this five or six times, start the engine and see if idles normally. If it does, replace the egr valve. What is likely happening is that the egr is sticking slightly open, and it's not until after it has vacuum applied to it that it fully shuts. Good luck.

Take care
~Chris