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Installed 2nd hand Eberspacher - it keeps blowing main fuse!

Posted: 16 Feb 2007, 10:23
by mahatmacoat
I've had a good search on here & have spent mainy hours chasing the wiring with a multimeter looking for faults & shorts, but still no joy.

I was sold the Eber as a working unit but have yet to prove it. The wiring to the thermostat on it was very dodgy with lots of block connectors, miscellaneous wire & insulation tape, so have VERY carefully removed all the crap wire & soldered/heatshrunk all the dodgy connections. I have checked & rechecked the 3 wires & am 99.9% certain they are correct (checked against schematic).

When I switch it on at the thermostat on/off switch the fuel pump sometimes clicks once or twice & then the 15A inline fuse from the battery blows. I have checked that the fuel pump works by putting 12v direct to it (it needs a pulsed current to work doesn't it?!) & it seems to be okay. I don't want to keep trying it in case it damages anything else!

How do you prime these pumps as I can't suck fuel through it?

I have now run out of ideas. Are there any Eber experts in the Warwickshire/Midlands area I can visit? Is there anything I should be checking?

Please help, surfing & coming back to a cold van isn't much fun!

Posted: 16 Feb 2007, 13:54
by Ian Hulley
The pumps pulse so they try to start and then when no fuel gets through it stops and after a short delay, minute or so (?) tries again and fires up. Thus there's no need to bleed them.

Re the fuse, mine could of course be wrong, but it's got a 30A fuse in it and a 30A relay replacing the old BT hour timer box (Thanks Steve Mocki :wink: ) and it works just fine.

Cheers,Ian.

Posted: 16 Feb 2007, 15:04
by T'Onion
Have you looked at the manual ?
Inline fuse should be 25A
but i'm sure a 30amp one will do :D

have a good look at the manual and get back to us :?

Posted: 16 Feb 2007, 15:24
by Ian Hulley
T'Onion wrote:but i'm sure a 30amp one will do :D

Ay, that it does. :D

Will put a 25 in after DF though, Ta. :wink:

Ian.

Posted: 16 Feb 2007, 15:26
by T'Onion
be right Ian , i've a 30a one in mine , i think , just happened to be read the manual t'other day and noticed the fuse rating , amongst t'other things :?

Posted: 16 Feb 2007, 18:40
by mahatmacoat
Damn, I was hoping it was that simple for a minute, but have checked the manual & the D1L has a 16amp main fuse. a***!

So any further ideas or ideas of who may be able to help?

Posted: 16 Feb 2007, 19:45
by Rozzo
yeh put a thirty in.

Posted: 16 Feb 2007, 20:23
by T'Onion
well if you had said that it was a d1l then i wouldnt have said 25a :lol:

your right in saying 16a (just looked it up)

http://www.vdubs.freeuk.com/downloads/eberB1LD1L.pdf :wink:

re check the wiring ( one more time )