2002 Impala has 160,000 mi, I was getting 29/31 mpg. Now I get a whopping 11 miles per gallon. It's sickening. We've changed the O2 sensors, flushed the radiator, spark plugs, air filter, fuel filter. No gas smell in the car or at the exhaust, no black smoke coming from the exhaust. I've also experienced delayed shifting going into 2nd gear right after the car is started as well as sputtering while I'm stuck in stop and go traffic. Any input would be very, very helpful.
2002 Chevy Impala terrible reduced gas mileage!!?
- Thread starter Jodi
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