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

Post by **mahatmacoat** » 16 Feb 2007, 10:23

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!

Post by **Ian Hulley** » 16 Feb 2007, 13:54

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

) and it works just fine.

Cheers,Ian.

Post by **T'Onion** » 16 Feb 2007, 15:04

Have you looked at the manual ?
Inline fuse should be 25A
but i'm sure a 30amp one will do

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

Post by **Ian Hulley** » 16 Feb 2007, 15:24

T'Onion wrote:but i'm sure a 30amp one will do

Ay, that it does.

Will put a 25 in after DF though, Ta.

Ian.

Post by **T'Onion** » 16 Feb 2007, 15:26

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

Post by **mahatmacoat** » 16 Feb 2007, 18:40

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?

Post by **Rozzo** » 16 Feb 2007, 19:45

yeh put a thirty in.

Post by **T'Onion** » 16 Feb 2007, 20:23

well if you had said that it was a d1l then i wouldnt have said 25a

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

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

re check the wiring ( one more time )