Okay I got an Eberspacher D3 Plus which looks like it's seen very little use. Here's the label on it. I was happy enough. So I needed a controller, went on ebay and bought one that the seller said was compatible. looks the part, except the wires coming from it don't match any wiring diagrams I can find ! And the only part numbers I can find are here and searching them has brought me to items that are nearly the same numbers but have different wires .... So I'm completely stumped. Here's the wire endings of the D3 btw no easy match there ....
Does your Ebers need an external controller/sequencer? Post a pic of the unit. I suspect it's got an internal controller (units like the B1L/D1L needed an external control box, anything after had the electronics inside). The Ebers thing in your pics is just a timer - you could do without it, if you choose. You can check whether the Ebers is working by unplugging everything, connecting a fuel supply, the main (thick) red and brown supply leads and the connections to the metering pump. Then locate a cable that has the red, yellow and brown leads on. With the Ebers connected to the battery, the red lead should have +12V on it. Short this to the yellow (start) lead - the Ebers should start its fire-up sequence (I'm assuming they haven't changed the wiring colours much over the years). Ebers do have wiring diags for most parts, they're just hideously confusing as they include all variants of stuff. You often have spare connectors in the loom as well. What exactly isn't your unit doing?
According to the sticker your heater runs off diesel. You will need to organise a seperate diesel suppy for it.
Only nearly a year later ! Well this got shelved due to more pressing problems with the engine but with those now sorted, and obviously it's getting cold again I thought it's time to get this working. Basically I bought a used eber. I then bought a fuel pump for it. I then bought a controller that was supposed to fit but it doesn't just plug and play so I'm trying to make sense of it all. I has 10 leads: red/ 2 brown/ yellow/ green & red/ pink/ brown & white/ blue & grey/ blue & yellow/ red & grey. Using the advice above I connected the brown to the negative on a 12v battery, the red to positive and shorted the yellow wire across the red, the ignition clicked. I'm now trying to get the fuel pump to work. It has two space connectors, as I understand from reading up on it it by connecting brown to one side and red/green to the other it should work. But it doesn't. If I connect brown to one side and red to the other it pulses once, heats up but doesn't pulse again unless I disconnect the red and connect it again, so I presume the red/green is an intermittent 12v source ? bit stuck on what my next move is with it ... any and all advice gratefully received ....
The pump is a diaphragm pump - it doesn’t pump continuously. It relies on 12V pulses from the controller.
Thanks Snotty. So do I need to buy a controller for it or is it possible to get it working with what I have ?
Is there anyone up your way who could sort this out Owen ? It's driving me madder than I normally am ...
Okay a bit more reading and I'm told the pulse is supplied by the ecu. So the pulse should be coming through the reg/green wire I presume, but isn't. Presumably it's shutting down start up before we get to it. I'll keep working at it and see how I get on.
Depends what you mean by controller. The thing in your pic is basically a timer with maybe the pot for temperature control in it. Assuming your Ebers has a built-in what I’d call a controller (ie sequencer etc), you don’t need the timer to test the heater. Just use the red and yellow wires in the loom, as above. The drive for the pump should emerge from the loom in a different place. Two wires, green from memory, although would have to check. These take the pulsed signal from the heater controller to the pump. Have a look for two extra wires in a separate loom.
Post a pic of your full Ebers loom. Had a quick look at mine last night. The pump wiring should emerge from the main loom somewhere: two wires. Old wiring was two greens (doesn't matter which way round they go), but a more recent Ebers pump extension loom I've got has green/red and brown for the pump connections.
Don't know if it helps, but here's a pic of a stock Ebers loom. Main connector to heater and glowplug on the left. Bit further left is the main red and brown power feed to the heater. Centre is wiring that normally goes to the timer (or basic on/off switch), then two wires (green/red and brown) that drive the pump. Connector on right is for fancier functions. To start with, I suggest you connect the pump, run it to a source of fuel, connect the main supply and pump pulse lines and just turn the heater on by shorting the yellow cable to the red. Make sure you prime the fuel line (use a syringe-full of fuel), otherwise the heater may not light: the pump hasn't run long enough to get all the air out and get fuel to the heater. On a more modern Ebers, if it fails to light after (from memory) three attempts, it will log a fault code and lock the heater out. HTH.
Hi @snotty, that's interesting what you say about the modern ones locking out, my wife's Landrover has a webasto which I think may be locked out, I'm guessing you need a diagnostic tool to unlock it. It was working for the previous owner but he disconnected it because his wife used to ring him every time she say smoke coming from under the wheel arch. The cold mornings have me thinking about having a look at getting it going.
