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1986 Mercedes-Benz 420SEL 4.2L Poor Idle Quality
Long story, I wont go there. Bottom line is this engine will not idle if TPS is connected, found that if I unplug TPS it will idle very high. The TPS switch test to specs. so I started looking for what circuit causes engine to stall at idle and found if I disc...
FIX posted 4/22/2011
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Message Closed w/FIX
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| VIN | WDBCA35D4G |
| Engine | 4.2 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | Fuel Injection / CIS |
| Emissions | CAL |
| Symptoms | Poor Idle Quality |
| Occurs | Always |
Message Closed w/FIX
Vehicle Data
1986 Mercedes-Benz 420SEL
| VIN | WDBCA35D4G |
| Engine | 4.2 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | Fuel Injection / CIS |
| Emissions | CAL |
| Symptoms | Poor Idle Quality |
| Occurs | Always |
7 Replies Received
7 Replies Received
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