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1991 GMC Sonoma SLE 4.3L High Idle
My friend has this S10 that has a high idle ([...] rpm) when the engine is cold. Once the vehicle warms up, it runs fine. He has installed a tps., iac, t stat and a throttle body gskt but to no avail. He will throw a computer at it on monday to see if it s...
FIX posted 11/29/1999
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Message Closed w/FIX
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| VIN | 1GTCS19Z4M |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / efi |
| Symptoms | High Idle |
| Occurs | Cold |
Message Closed w/FIX
Vehicle Data
1991 GMC Sonoma SLE
| VIN | 1GTCS19Z4M |
| Engine | 4.3 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / efi |
| Symptoms | High Idle |
| Occurs | Cold |
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