95 volvo 850 turbo..check engine light on...2 codes: po303 - cyl#3 misfire, p1310 - misfire from at least 1 Cylunder - TWC Damage. Does this p1310 code come on every time one of these p0300-p0305 is on or is this a separate issue on top of the cyl#3 misfireing?

 

Basically what that code means is if you don't fix the car you can cause cat. converter damage due to unburned fuel building up in the cat. converter.But hardly ever causes damage.

 

OK, got it. I changed the spark plugs, I think that took care of the problem (first code anyway). Didn't know what that twc stands for, thats all. Thanks for your help

 

No problem anytime.

By the way Three way cat. conveter is what TWC stand for.