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1999 Chevy Suburban Rough Running, misfires?

Tiny
MARCFO
  • MEMBER
  • 1999 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 107,000 MILES
I have a 99 Suburban with a 5.7 L motor and 107,000 miles. Bought it a few months ago and had no issues 'til lately. Three weeks ago it died and left my wife stranded. Had it towed and the mech said clogged fuel filter. Changed it and it ran fine for about a week. Then it started to run really rough. Took it back and had a full tuneup done. New plugs, wires and rotor. Still runs poorly, maybe even worse. Also, it died on me and wouldn't restart. So I put a new battery in. Now it starts, but runs terrible. SES light is now on.
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Monday, August 16th, 2010 AT 5:44 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
SES 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.
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Monday, August 16th, 2010 AT 5:59 PM

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