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1993 GMC Jimmy SLE 4.3L Excessive Emissions, Poor Fuel Economy, MIL Lamp on
Posted to GM Driveability on 5/28/2008 10 Replies

Runs very rich at idle and cruise o2 above .8v will set code on highway but not in town monitored with graphing meter, plugs and o2 very black. Holds fuel pressure. Removed plenum no leak found looked at each poppet valve all have same spray [...] the fuel uni...

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  Related Documents & Media  1993 GMC Jimmy SLE

 
Message Closed w/FIX

car Vehicle Data

1993 GMC Jimmy SLE

VIN 1GKDT13W8P
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / CPI
Emissions us fed
SymptomsExcessive Emissions, Poor Fuel Economy, MIL Lamp On
OccursAlways, Cruise, Idle

Trouble Codes

45rich exhaust
Message Closed w/FIX

car Vehicle Data

1993 GMC Jimmy SLE

VIN 1GKDT13W8P
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / CPI
Emissions us fed
SymptomsExcessive Emissions, Poor Fuel Economy, MIL Lamp On
OccursAlways, Cruise, Idle

Trouble Codes

45rich exhaust