2006 Chevy Cobalt Fule problems

Avatar
AMTOWN
  • MEMBER
  • 1 POST
Engine Performance problem
2006 Chevy Cobalt 4 cyl Front Wheel Drive Automatic

My fuel eco went from 33 mpg to 12.6 mpg. You can hear it missing. I changed the plugs and plug wires. I tried b12 and a higher-octane fuel. The car dies when I am driving in city with the AC on. When I changed the plugs, one of them was missing the posts (the part of the plug you gap). I put a magnet down where the plug goes but nothing came out. I am about to replace the fuel filter. The car has 122,000 miles on it but has been regularly maintenance. What should my next stop be please?
Aug 11, 2009 at 7:47 AM
Advertisement
Avatar
MMPRINCE4000
  • ✓Experienced Mechanic
  • 8,548 POSTS
Do you have any error codes in PCM?
Sep 8, 2009 at 10:57 PM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Frequently Asked Problems for This Vehicle