Fuel pump relay on a 1986 280.

Hello Shakir,

With intimate electrical knowledge and background it is possible to repair.

If it is worth repairing? Only if you know an electrical wizz kid.

A new after market one is apporoximately, or was around £60.00. Euro Car parts should be able to supply. If not, try any reputable trade motor factors in your area, the will be able to locate one.

Regards,

Have a small length of wire of approximately 3" to 4" long, with its insulation at both ends striped off about 1/2".

Should your car breakdown, use your wire to bridge terminals 7 & 8 of the relay plug and force the relay into the plug, as quiclkly as possible, start your car, with the pump working, the engine should start. If not, the problem remains, possibly with the relay or other areas to be checked out. These being the ignition coil or even the ignition pack.

Remove the bridging as soon as possible.

You can try and dismantle the relay yourself, look out for any dry solder on the printed circuit, if you locate any, re-solder the joint.

Good Luck,

Whats the part number? I ask just in case it's a shared component from another model 280 of that era.

Hello Shakir,

One of the Russian sites puts it at €100 on the continent, so that's about £100 here
http://mbspares.chance.ru/?type=A&partno=0015450705&op=Search

£100 from Inchcape http://www.mercedes-benz-parts.co.uk/index.php?option=com_virtuemart&sku...

Still trying to find out if there is any cross model compatability,which might source a cheaper s/hand unit.

Shakir,

I had a friend run a parts compatability check through Daimler's EPC and indeed there is compatability with other models.Here are the results for part number A0015450705

Market Type Platform Model (digits 4-6 in chassi no)
Nordamerika PKW 123 053
Nordamerika PKW 123 033
Europa PKW 123 053
Japan PKW 123 053
Europa Geländewagen 460 212 222 232
Japan Geländewagen 460 212 222 232
Europa Geländewagen 460 223 224 233 243
Japan Geländewagen 460 223 224 233 243
Japan PKW 123 033
Europa PKW 126 022 023
Japan PKW 126 022
Europa PKW 123 033
Japan PKW 123 033
Europa PKW 123 007 093
Japan PKW 123 007 093
Europa PKW 107 022 042
Japan PKW 107 022 042
Nordamerika PKW 116 024

So I'd ask a breaker if they could match the part from either a W123,W126 or a W107.Hopefully this will give you a cheaper alternative to a new one at £100 :wink: