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1988 Chevrolet Astro 4.3L Poor Idle Quality
Idle is always high. Idle air control valve has been replaced, but idle stop screw has not been touched. MAP sensor has not been replaced but problem still occurs with MAP sensor disconnected. Accelerator has been checked for sticking / binding. Has anyone see...
FIX posted 11/29/2000
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| VIN | 1GBDM15Z5J |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Emissions | US Federal Emissions |
| Symptoms | Poor Idle Quality |
| Occurs | Always |
Trouble Codes
| 33 | MAP Sensor - Signal Voltage High |
Message Closed w/FIX
Vehicle Data
1988 Chevrolet Astro
| VIN | 1GBDM15Z5J |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / TBI |
| Emissions | US Federal Emissions |
| Symptoms | Poor Idle Quality |
| Occurs | Always |
Trouble Codes
| 33 | MAP Sensor - Signal Voltage High |
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