I also had the same issue with my car and found the problem but had to go through the bottom of the car and there was the problem. The EGR tube was split in half. This tube is a metalic hose running from your throttle body to your EGR and has several bend points in it. It can be located just 12 o clock from your distributer cap and the other side next to your throttle body. To closer inspect you may have to take the part off which can be done with a hex bit on the throttle body side and a metric wrench just on the right side of the main block. I picked one up from a local pull a part that was in perfect condition and it was better then paying 160 for a new one from a parts store :/