Q: I just got a tune up but Its shutting off on highway. Light says misfire but that keeps going off too. Not overheating 140k mile
I just got a tune up but Its shutting off when i take the highway so I only take the city. Check engine light came on and it says misfire and it won't drive that well but the check engine light keeps turning off and then it will drive great and then ill get on the highway and then it will shut off and the light will come back on. I'll be driving and then when I press the gass nothing will happen but I can brake. And i'll have to pull over before everything locks up. So I dont know what's wrong. Not overheating at all, it also has a new radiator, battery, front Axel, etc. It does need an oil change though. Also I feel like that gas mileage has gotten worse
My car has 143000 miles.
My car has an automatic transmission.
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