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1987 GMC R2500 Suburban 7.4L Excessive Emissions, Poor Fuel Economy
hi need help from the guys. i'm working on this 7.4l co high at idle staying in open loop goes into close loop at cruise. check ect ok. 02 active from peak to peak off idle steady rich at idle .984 co about 1.5 to 2 percent attemp to force lean at idle dosent ...
FIX posted 7/28/2002
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Related Documents & Media | VIN | 1GKGR26N0H |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Emissions | California |
| Symptoms | Excessive Emissions, Poor Fuel Economy |
| Occurs | Always, Hot, Idle |
| Misc. | VIN N |
Message Closed w/FIX
Vehicle Data
1987 GMC R2500 Suburban
| VIN | 1GKGR26N0H |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Emissions | California |
| Symptoms | Excessive Emissions, Poor Fuel Economy |
| Occurs | Always, Hot, Idle |
| Misc. | VIN N |
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