I've a 1995 Legacy L. Sedan (2.2 I think).
I need a oxyen sensor, where to buy online? My car was runing very good, but yesterday I put a little sea foam in the gas tank and today I got the "check engine light", could that damage the oxegen sensor? I last change sensor 3 years ago. There is a slight hisitand when I first start off in the mornings and I saw a little bit of carbon in the sparks plug wire, so I change the sparks plug, but couldn't get any wire at my local stores. Still has the hisistant so I put a little seafoam in the gas tank. I merely trying to tune up before winter, but may screw things up, did I?
How often should I change coolant sensor? Do they have car manual in ebooks?