TPS bad or just winter blend?
Im sure this has been discussed before, but Im new to this forum so bare with me.
I have a 07 ranger, 4cyl, 5 spd. I bought it back in July as a work truck and for its great MPG as I do about 140 miles a day, mostly hwy. Its a great little truck.
Well, I was getting close to 30 hwy. back in July-Aug. Right around October, the throttle body needed cleaning as it was sticking. So I opened it up and sparayed it down with carb cleaner. I didnt go too excessive and I just wiped away the build up with a clean rag. It wasnt really too bad at all, just enough to make it slightly stick on accel.
Anyway, shortly afterwards was when it started getting cold and the gas prices started to drop. Well now Im down to about 27.5 mpg. I know thats still good, but I try to squeeze out every drop.
Im wondering if I might have done something to the TPS or if I can just blame it on the winter blend of gas they use. Ive heard that the winter blend has chemicals in it that keep it from freezing, but the chemicals make it burn faster. About a 10% decrease in mpg is typical.
What do you guys think?
BTW, I keep the tires, fluids, filters all good.