
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 |