1993 GMC Jimmy SLE 4.3L Excessive Emissions, Poor Fuel Economy, MIL Lamp on
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...
FIX posted 6/3/2008
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Message Closed w/FIX
Vehicle Data1993 GMC Jimmy SLE
Trouble Codes
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Message Closed w/FIX
Vehicle Data
1993 GMC Jimmy SLE
VIN | 1GKDT13W8P |
Engine | 4.3 L / 6 cyl / GAS |
Trans | 4-speed Automatic |
Delivery | FI / CPI |
Emissions | us fed |
Symptoms | Excessive Emissions, Poor Fuel Economy, MIL Lamp On |
Occurs | Always, Cruise, Idle |
Trouble Codes
45 | rich exhaust |