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1996 Chevrolet S10 2.2L Excessive Emissions, MIL Lamp on
Posted to GM Driveability on 4/23/2008 14 Replies

Vehicle runs clean at idle, and high rpm, on startup shortly after going into closed loop.O2 switches fine,injectors vary 1.0ms to 2.3ms,short fuel trim [...] basically 0. After a few minutes short term starts subtracting fuel gradually to -18%,O2 starts shift...

FIX posted 4/25/2008

14 Replies Received (View Replies)

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Message Closed w/FIX

car Vehicle Data

1996 Chevrolet S10

VIN [No VIN Available]
Engine2.2 L / 4 cyl / GAS
Trans5-speed Standard
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, MIL Lamp On
OccursHot, Idle

Trouble Codes

P0172Fuel System Too Rich (Bank 1)