My 1998 Audi A4 1.8t (147k) engine had went out so I bought a used engine (85k miles) off eBay and had the engine swapped. It took 2 long months to get my car back and when I finally received it, when pulling off the lot the oil light became flashing and beeping..oil pressure gauge and oil level was normal. Also it was a lot of pressure in the coolant cap and coolant everywhere when I popped the hood ..what could be the problem guys?!!!!

 

Take it back to the shop that did the work is my recommendation.