1998 Plymouth Voyager • 6 cylinder FWD Automatic • 274,000 miles

Hi, I have 98 Grand Voyager and it runs rough. When you put it into reverse it shugs. No codes are coming up on the computer however about a month ago the service engine light came on for about 3 days then went out and then came back on for a few days and then out again. It hasn't been on since but still runs rough and eats a lot of gas.
August 5, 2011.

Check engine light on

Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis,finding out what's going on.

Sep 12, 2011.