02 blazer low speed low idle

2002 CHEVROLET BLAZER
163,000 MILES • 6 CYL • 4WD • AUTOMATIC
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WES.AARON
  • MEMBER
  • 2 POSTS
wat cud be makin my 02 blazer have low idle and not be able to go over 15 mpr and now barely start?
Apr 16, 2011 at 8:24 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Start by checking the exhaust system for restriction, catalytic converter could be clogged-do a backpressure test
Apr 16, 2011 at 8:28 PM
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WES.AARON
  • MEMBER
  • 2 POSTS
how would you do the back pressure test
Apr 16, 2011 at 8:30 PM
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