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2000 Chevrolet Blazer LS 4.3L Misfire, Poor Fuel Economy, MIL Lamp on
Posted to GM Driveability on 3/23/2005 12 Replies

Owner complains of rough run and poor fuel eco. When I scan trim after driving a while they appear normal values less than 5% both banks. but when I WOT once or twice the B1 values go to 50.00% and will not come down untill you drive for a while. All plugs/ign...

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  Related Documents & Media  2000 Chevrolet Blazer LS

 
Message Closed w/FIX

car Vehicle Data

2000 Chevrolet Blazer LS

VIN 1GNDT13W4Y
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire, Poor Fuel Economy, MIL Lamp On
OccursIntermittently

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0300Multiple Misfire Detected
Message Closed w/FIX

car Vehicle Data

2000 Chevrolet Blazer LS

VIN 1GNDT13W4Y
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMisfire, Poor Fuel Economy, MIL Lamp On
OccursIntermittently

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0300Multiple Misfire Detected