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1995 Chevrolet Astro 4.3L Excessive Emissions, NO CLOSED LOOP
vehicle failed NOX testing at emmisions. will not go into closed loop. o2 sensor reads .675-.750 at idle steadily (not switching) and at cruise will read 40mv or less. replaced o2 sensor and have same readings. no vacuum leaks were found (smoke tested) fuel pr...
Summary posted 5/12/2009
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15 Replies Received
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Related Documents & Media | VIN | IGNDM19W6S |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / VORTECH |
| Emissions | Not OBD-II Compliant |
| Symptoms | Excessive Emissions, No Closed Loop |
| Occurs | Always |
Message Closed w/Summary
Vehicle Data
1995 Chevrolet Astro
| VIN | IGNDM19W6S |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / VORTECH |
| Emissions | Not OBD-II Compliant |
| Symptoms | Excessive Emissions, No Closed Loop |
| Occurs | Always |
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