2004 Chevy Cavalier Gas mileage

Tiny
ROBHELMS
  • MEMBER
  • 2004 CHEVROLET CAVALIER
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 113,980 MILES
Why would my 2004 Cavalier start getting worse m.P.G.?
Friday, February 20th, 2009 AT 7:56 PM

2 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
If you are not getting any error codes, it is time for a major tune up, plugs, fuel filter, air filter, oil change, filter.

Check plug boots for cracking and connections to coil pack.

Use recommended plugs that came from factory, usually platinum or iridium.

Here's some reference, although some does not apply to Ecotech engine.

https://www.2carpros.com/how_to/how_to_tune_up.htm
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Saturday, February 21st, 2009 AT 8:50 AM
Tiny
ROBHELMS
  • MEMBER
  • 2 POSTS
Thank you very much for replying to my question. I bet the items are are original and do need replaced. I was concerned about the mileage because the needle didnt stay on the full line all the way to work like my old car. But when I did the math my Cavalier has a smaller gas tank and I was getting around 32 to 35 mpg. But I will give the car the deserving tune-up. Thanks again, I appreciate it.

Rob
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Saturday, February 21st, 2009 AT 2:19 PM

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