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1989 Chevrolet K3500 Cheyenne 7.4L High Idle
Former employer brought this truck to me to solve high idle problem. Truck starts and runs good. Scan test shows all values in range. After driving fo a while the vehicle will begin to idle at 1600 rpm. IAC goes to 125 and is a true reading. Once this starts i...
FIX posted 6/22/2001
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| VIN | 1GCGK34N6K |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI / TBI |
| Emissions | US FED |
| Symptoms | High Idle |
| Occurs | Intermittently |
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Vehicle Data
1989 Chevrolet K3500 Cheyenne
| VIN | 1GCGK34N6K |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 3-speed Automatic |
| Delivery | FI / TBI |
| Emissions | US FED |
| Symptoms | High Idle |
| Occurs | Intermittently |
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