no spark

Okay, I bought my 1st beetle used just about 3 months ago, it is a 2003 New Beetle 2.0 engine and I have been having some problems. I think they might be connected but my mechanic can't figure it out. Because the only code it has is a code for the cooling system, found out that my thermostat is...

My beetle has been running awesome lately...I should never think that! Park it over night. Come out and crank but no start. Smelled gas all is well there, checked injectors they are ok. Pulled a wire, no spark. Did some research and purchased and changed the crank sensor. Still no spark...