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1999 Chevrolet Astro 4.3L MIL Lamp on
We have a recurring catalyst failure on this van. 5 Cats total. 1st 3 were replaced with aftermarket cats, code comes back after about 4 or 5 monitor runnings. Van drives and runs 100%. Received suggestions of possible misfire, van has been tuned and there are...
FIX posted 4/14/2008
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Message Closed w/FIX
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Related Documents & Media | VIN | 1GNEL19W7X |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
Message Closed w/FIX
Vehicle Data
1999 Chevrolet Astro
| VIN | 1GNEL19W7X |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Intermittently |
Trouble Codes
| P0420 | Catalyst Efficiency Below Threshold (Bank 1) |
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