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  1. All about MPG
    Hello. I had a fuel pump going bad in my 2.2 07 Cobalt. This caused problems, but my combined mileage was about 27-30 per gallon. I got a new fuel pump. My engine has more power, but my combined mileage dropped to 24-27. Is this normal?
  2. Problems and Service
    Hi, we have a 2005, we have been seeing our gas mileage decline. It has gone from high 30s per gallon now to low twenty's now. We went to advance and had codes read. Came up with.... P0121-Throttle position sensor P0130-02 sensor bank 1 sensor 1 P0171-Bank 1 system too lean P0300-Random multiple...
  3. All about MPG
    I have a 2009 Cobalt LT. I noticed a couple months ago how I had to put gas in my car more and more frequently. It was time for an oil change so I figured that was the cause. Now it went from around 28.9 mpg to 16.1 and its dropping by the week! Ive changed the air filter and keep my tires...
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