1986 SL420 | Fuel Pump Wiring

Simon Van Damme

New Member
Jun 2, 2020
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Your Mercedes
1986 SL420
Car Starts then stalls

- replaced the sparks, and coils
- check vacuum hoses
- new Fuel Pump
- replaces Fuel pump relay

the fuel pump directly with a battery it is running fine,But when the fuel pump goes through the car's system it stop working.

Any recommendations to help solve this issue

Thank you

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