2002 Chevy Blazer rpm flutters at certain tact numbers, 150

2002 CHEVROLET BLAZER
145,000 MILES • 6 CYL • 4WD • AUTOMATIC
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MARK DYMOND
  • MEMBER
  • 1 POST
RPM flutter between 1500 and 2200. Even at Cruise control on. No missing indicated by garages instruments used to measeure such thing. It jumps about 2 to3 hundres rpm's when fluttering. Flutters then settles and will not do it again until road conditions to cause it to change.
Dec 18, 2009 at 1:23 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Have you checked fuel pump pressure? When was the last tune up? Fuel filter?
Dec 21, 2009 at 4:30 AM
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