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1991 Chevrolet Astro 4.3L Misfire, Bucks
This van has new plugs, wires, cap, and rotor. Did a top end clean. The O2 would hardly switch. Replaced O2. Switches better but still not very fast. It doesn't have good vacuum but it is steady not fluctuating. The map sensor tests good. I think the code ...
FIX posted 2/29/2000
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Message Closed w/FIX
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| VIN | 1GNEL19Z2M |
| Engine | 4.3 L / 6 cyl |
| Emissions | OBDI |
| Symptoms | Misfire, Bucks |
| Occurs | On Decel, Intermittently |
| Misc. | Awd |
Trouble Codes
| 33 | map |
Message Closed w/FIX
Vehicle Data
1991 Chevrolet Astro
| VIN | 1GNEL19Z2M |
| Engine | 4.3 L / 6 cyl |
| Emissions | OBDI |
| Symptoms | Misfire, Bucks |
| Occurs | On Decel, Intermittently |
| Misc. | Awd |
Trouble Codes
| 33 | map |
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