Ok, I just had a tune-up and now 2 weeks later I have a knock sensor ghost code and a front left O2 seonsor heater ghost code, DAMN! Ok now, I didn't mean too but the shop put in bosch plugs 4+ plats, it was what he got and I forget to tell him to order NGK, I figured they can't be that bad. You think that is the problem? If it is I am going to complain and get my money back, hey they say guarenteed better performance. Thing is I don't know if maybe I had this code before the tune-up. Now I know that the knock sensor code is kinda common, I have 97,000 miles on the car, but what is that second code and how do I fix it?

Thanks

 

Spark plugs are not the problem, but u should've gone with NGK..but you can't cry over spilled milk...KS and O2 are common problems in our cars..so if you are low on the funds, get o2 changed 1st to improve your mileage(theirs a write up on how to change 02 and ks on www.motorvate.ca)and then buy $90 ks off ebay and you can do it yourself...performance will be improve dramatically if u change KS...good luck!

 

Replace the o2 sensor first, it may take care of both codes.

 

k, thanks for the reply's by the way my gas mileage actually went up a little, I got 201 miles on half a tank.

 

If you think your car performs quite well right now...think again...changed that KS and then you'll know what I mean..I was in the same boat as you are right now 7 months ago..I changed 02 and left KS alone, since I thought my car was performing well...I changed KS about 3 weeks...man...let me tell ya...huge difference...Don't wait...Maximize that max.