Okay, I'm a boy. Stupid, but I know a little about cars. Ok, I am going to ask you a few questions. First, do you have a service Engine soon light? How did this parts supply clerk determine it was a missfiring no.1 cylinder? Can you tell us which type of engine you have in your car? (4 cylinder or 6 cylinder)
If indeed your no.1 cylinder is missfiring, then there are a ton of things that can cause this. Bad plug, wire, coil pack, fuel injector....ect.
Did the parts guy say no.1 cylinder was missfiring, or bank 1 has a missfire?
As for your boyfriend fixing the problem, I would say he should be able to fix it as long as it isnt a major internal problem with the engine. Just have him do some trouble shooting before replacing a bunch of parts and costing a good bit of money.

Answered by Mikeybdman
6 questions asked

It's a 6 cylinder...O'reilly's hooked it up to their diagnostic machine and it kicked out that error. The check engine light is blinking furiously at me...but only when I'm actually moving..if I'm sitting still, it's just on but not blinking.

Response from jamiefereday
1 question asked

What engine code did O'Rielys say was showing?

Answered by Mikeybdman
6 questions asked