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1986 Mercedes-Benz 420SEL 4.2L Poor Idle Quality
Car has high (2000 RPM and above) idle always. How can I test the idle bypass motor? Any other ideas on high idle? No apparent vacuum leaks were found.
FIX posted 3/7/2001
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| VIN | CA35D4GA26 |
| Engine | 4.2 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Symptoms | Poor Idle Quality |
| Occurs | Always, Idle |
Message Closed w/FIX
Vehicle Data
1986 Mercedes-Benz 420SEL
| VIN | CA35D4GA26 |
| Engine | 4.2 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Symptoms | Poor Idle Quality |
| Occurs | Always, Idle |
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