Hello guys, this is my first post. The vehicle is a 2005 Golf TDI the engine code is BEW. The first issue the car came in with was a runaway engine. I found the crankcase full of fuel, It turned out the Vacuum pump/fuel pump was leaking into the cylinder head. The pressure from the fluid in the crankcase destroyed the windage tray and took out the #4 oil squirter. After cleaning all of the plastic out of the head and crankcase and installing a new squirter as well as new fuel pump and a crankshaft seal it started up smoked for awhile and ran well. I drained the oil dropped the pan and cleaned out the rest of the plastic then filled with fresh 505.01 oil and a new filter. The issue now which the customer states is new is that during the first start of the day when the engine is fully cold there is no throttle response for the first minuet of running. Then the revs drop from a fast idle (1000 rpm) down to around 750rpm and the throttle is again responsive. It will only happen when totally cold as in not being run for about 8 hours. I have logged the TPPS and it reads fine. I did notice the piston for the EGR was very nasty and cleaned it as best I could with no positive results. If anyone has experienced this issue please let me know or if anyone has any Ideas. I do alot of TDI work at my shop but have not encountered this issue.