My check engine light just recently came on around 80K miles, right after I filled up my tank. My Tacoma is a 98 4 cyl. 4x4. The OBDII scan says the engine is running lean. The guy at Advanced said that this may be the O2 sensor burning out. My question is; is there anything I can do before buying a $180 part that may also fix the problem? Basically it's not necessarily the O2 sensor right? I have noticed a decrease in gas mileage over the past few months and especially as of late. Also does anyone know where I could get a cheaper O2 sensor? Thanks guys,
Ben
Ben