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1988 Chevrolet Astro 4.3L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire
when the engine is cool, it will miss lightly. when the engine heats up, it will suddenly idle down and many times stall. we have tried all procedures we have known to fix the problem. a customer today thought we should look next at the catalytic converter. if...
FIX posted 5/17/2001
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Related Documents & Media 
| VIN | 1GCDM15ZXJ |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Emissions | OBDI |
| Symptoms | Poor Idle Quality, Hesitation, Surge, Cuts Out, Stall, Misfire |
Trouble Codes
| 33 | map sensor |
| 44 | o2 sensor |
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Vehicle Data
1988 Chevrolet Astro
| VIN | 1GCDM15ZXJ |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Emissions | OBDI |
| Symptoms | Poor Idle Quality, Hesitation, Surge, Cuts Out, Stall, Misfire |
Trouble Codes
| 33 | map sensor |
| 44 | o2 sensor |
Video