So the Check Engine goes off for the first time yesterday [85,000 car]. I drive to Autozone and get a P0402 code reading [for free by the way - God Bless those folks!]. Well, they tell me that it's probably the fuel and that sounds reasonable - I just filled up a day before [crappy USA gas fuel] and the next morning the light goes off. Apparently the old fuel & USA gas fuel didn't mix well
Anyway, I get a $3 bottle of fuel additive and erase the code. The car is running 100% as normal - no noises etc...
Is there anything else I should do??? I searched the message board and some people 'clean the throttle body and egr passages.' I'm a newbie, so WHERE exactly are those located and HOW to clean them? Any other tips? Thanks
