SEC Fuel Pump Relay

[30260]

Which of the two relays is the fuel pump relay on my 560 SEC. One is marked ZYL and has the numbers 002 545 18 05. It is not available from Europarts. The other is has the numbers 003 545 01 05 and is available from Europarts. I have replaced the OVP relay, but my SEC continues to cut out, usually after driving no more than a mile, sometimes it restarts easily, sometimes is needs to be left for a few minutes. This suggests a dry or corroded joint, but whwre is it most likely to be.

 

[Hal Fisher]

Sounds more like a fuel filter. Have you changed them yet?

I think there is an internal (in tank) and external pump. The external is located on the passengers side back by the tank. With ignition on, check to ensure the pump is getting voltage (12v?).