Maybe all I need then is the relay. Last fall when this problem first surfaced, someone on the list suggested that over 5A meant the fuel pump was bad, and a draw over 5 A. would fry the relay. I was working from that. I already ordered the FP, so I will test it when it gets here. I kind of expected the used FP I ordered to draw the same current.
I see no signs of damage in the relay. Nothing looks cooked and the points are so small I cant see if they are damaged. I will probably not resolder it, because I am not sure my skills are up to it. I don't have the heat sinks, desoldering tools and so forth, so i would likely fry something. This relay is labelled. I have seen many instances where one electronic component was labelled and another was not. Just depends on the supplier as far as I can tell. MB does not seem to require a part number. I had often wondered about the banana plugs but never tried it. I was trying to figure out how to measure amps when I remembered this old lab equipment. I use the cabinet for tools, but I never removed the voltmeter and ammeter. It also has a huge old variac built in. I always thought it would be good to have one, but never have put it to use. Never found an application where it was needed. At 08:56 AM 5/1/2008, you wrote: > > I am in need of a good fuel pump relay pn: 001 545 53 05 > > ...for 85 380SL... the fuel pump draws between 5 and 9 amps > > depending on engine on/off and the length of time it has been > > running. 5 A. with engine off. > >That's about what mine draws. What's wrong with your relay? >The high current could have cooked it, but sometimes the extra >heat only ruins the solder joints, which can be refreshed. >The relay is easily opened. New ones are something like $150, >so it's usually well worth whipping it with an iron. I did mine, >and it started working properly after a resoldering. You could >resolder it and burnish the relay contacts and see what happens. > >Interestingly, nowhere on my relay, supposedly a 000 545 36 05, >is its Mercedes part number. Was yours labeled? > > > Haven't been able to find a used FP relay so for. > >They seem to fail enough that it keeps the supply of good >used parts down. Probably doesn't help that the 380 SL >used four different relays over its production life. > > > banana plugs fit perfectly into the 30 and 86 holes > >Excellent idea with the banana plugs. I should have tried >that, I have some. (I ended up making a cable with a switch >and two extra harness male pins and some wire.) > >-- Jim > > >_______________________________________ >http://www.okiebenz.com >For new parts see official list sponsor: http://www.buymbparts.com/ >For used parts email [EMAIL PROTECTED] > >To Unsubscribe or change delivery options go to: >http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com Loren Faeth _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
