hello ggustaf,

keep it simple, and start with the basics:
1 pull codes
2 listen for fuel pump(door closed, seat belt buckled= to avoid buzzer). with key on engine off, make sure you hear the fuel pump whir a couple of seconds
3 check your spark plugs for: condition, gap , and look for nice blue spark

if all of the above checks out, it could be the crankshaft sensor , i had mine replaced @around 100,000 miles.

and from what i've read on the forum, if you still have the old style OVP in your car, it would be a good idea to replace it with the newer updated one, as preventative maintenance.

OLD style OVP = 000 540 52 45

updated/revised OVP = 000 540 67 45

good luck