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2005 Chevrolet Blazer ZR2 4.3L Excessive Emissions, Poor Idle Quality, Stall, Misfire, MIL Lamp on
Posted to GM Driveability on 8/5/2015 24 Replies

Hi techs: this blazer came in and is running rough. hooked up scan tool and got code po300b ramdon misfire. check for fuel and spark on all cylinders. fuel pressure is good and good spark on all cylinders. vehicle has new plugs, wires, dist. cap and rotor from...

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car Vehicle Data

2005 Chevrolet Blazer ZR2

VIN 1GNCT18XX5
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality, Stall, Misfire, MIL Lamp On
OccursAlways
Message Closed w/FIX

car Vehicle Data

2005 Chevrolet Blazer ZR2

VIN 1GNCT18XX5
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality, Stall, Misfire, MIL Lamp On
OccursAlways