Quote:
Originally Posted by tempfixit
Was this city driving or highway driving??? Did you have a code for a faulty 02 sensor??? The precat sensor is the one that tells the pcm to richen or lean out the fuel/air ratio not the after cat sensor. If any codes what were they???? Are you carrying tools or extra weight in the vehicle??? Have you added any injector cleaner to the gas. What condition is the air filter in?? Have you cleaned the MAF sensor???
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Driving was highway and city. I got the knock sensor code, but engine light never came on. Also the code is intermittent. I know not to touch the knock sensor. No extra weight in vehicle. Just got the tune up and added injector cleaner right after. Air filter is new. I haven't touched the MAF sensor yet.
I found and old post from IH8SPM where he had the exact fuel economy going. Wondering if anyone knows what he did to get it resolved?