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1998 Chevrolet Express 2500 4.3L Poor Idle Quality, Hesitation, MIL Lamp on
Posted to GM Driveability on 7/5/2010 18 Replies

Some cold starts this thing cant stay running, it back fires on accel, no misfire codes. It cuts out and runs poor until it goes into closed loop. Then it runs fine. Codes came on during closed loop= P0171 & P0174. Engine up to temp and driving around 25mph. R...

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  Related Documents & Media  1998 Chevrolet Express 2500

 
Message Closed w/FIX

car Vehicle Data

1998 Chevrolet Express 2500

VIN 1GCFG25W51
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / scpi
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, MIL Lamp On
OccursCold, Intermittently

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)
Message Closed w/FIX

car Vehicle Data

1998 Chevrolet Express 2500

VIN 1GCFG25W51
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / scpi
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Hesitation, MIL Lamp On
OccursCold, Intermittently

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)