2000 Chevy Blazer hesitating

2000 CHEVROLET BLAZER
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JAYDANRILEY
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  • 4 POSTS
Engine Mechanical problem
2000 Chevy Blazer 6 cyl Four Wheel Drive 160000 miles

my blazer hesitates when I accelerate and the rpm gage jumps around when this happens, do you know what the problem could be? I have just replaced plugs, wired, battery, and a c o 2 sensor
Nov 27, 2009 at 3:12 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires
Nov 27, 2009 at 5:09 PM
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