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1991 GMC Sonoma SLE 2.5L Excessive Emissions
The problem is high hc at idle. All scan data appears normal except block learn, which NEVER moves from 128. Intergrator moves around a littlt bit but it stays around 80 counts at idle.
FIX posted 6/4/2003
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Message Closed w/FIX
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4 Replies Received
Related Documents & Media | VIN | 1GTCS14E6M |
| Engine | 2.5 L / 4 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI / TBI |
| Emissions | Federal |
| Symptoms | Excessive Emissions |
| Occurs | Always, Idle |
Message Closed w/FIX
Vehicle Data
1991 GMC Sonoma SLE
| VIN | 1GTCS14E6M |
| Engine | 2.5 L / 4 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI / TBI |
| Emissions | Federal |
| Symptoms | Excessive Emissions |
| Occurs | Always, Idle |
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