Nigelw Posted November 20, 2013 Share Posted November 20, 2013 In an effort to try to get everything working I am now tackling the electrical stuff that is under the bonnet, I say stuff as some of this is additional add on's and not fitted by me so therefore I don't know if it works or whether it is wired up correctly (a lot of previous repairs and work done on this truck is of questionable standard). This is a pic of the filter housing and the wires to the fuel pre-heater. I am not really interested on how it is wired up currently but how it "should" be wired up. Should it work in common with the glow plug relay? Should it have a timer relay of it's own? What should be the trigger for it? Any ideas, the net just yields new ones for sale and no instructions on how it should be wired in. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted November 20, 2013 Share Posted November 20, 2013 Preferably using different colours of wire for positive & negative! Quote Link to comment Share on other sites More sharing options...
ejparrott Posted November 20, 2013 Share Posted November 20, 2013 I would expect an electric fuel heater to be on if the engine was running, not with the glow-plugs. 20 seconds with the glow-plugs won't do you much good, what happens when ice cold fuel from the tank comes through? It appears to have a temp switch in a spare port, so I'd say it switches itself on and off, and just needs to be fed power continuously while the engine is running. Quote Link to comment Share on other sites More sharing options...
Team Idris Posted November 20, 2013 Share Posted November 20, 2013 ^^^ sounds fair to me. If it was really cold I guess a mains powered fuel tank heater is part of the package along with sump and water heaters? Quote Link to comment Share on other sites More sharing options...
Nigelw Posted November 20, 2013 Author Share Posted November 20, 2013 Preferably using different colours of wire for positive & negative! Knew I should have expected that from you Quote Link to comment Share on other sites More sharing options...
ejparrott Posted November 20, 2013 Share Posted November 20, 2013 ^^^ sounds fair to me. If it was really cold I guess a mains powered fuel tank heater is part of the package along with sump and water heaters? I think I've seen a system somewhere that plumbs the car's coolant circuit - or most likely a heater exchanger to the coolant circuit - into a household central heating system. It'd be great in my 88"...by the time I got to work it'd be back down to freezing point....... Quote Link to comment Share on other sites More sharing options...
Maverik Posted November 20, 2013 Share Posted November 20, 2013 Whats the purpose of the fuel heater? I've heard of them on the Td5's (or is that fuel cooler...) although not entirely sure what's the purpose, even more intrigued as its a 200tdi, is it an efficiency thing or a cold weather operating thing? Sorry to add more questions... Mav Just noticed , whats the spacer ring between the filter and the body? - is that the heater? Quote Link to comment Share on other sites More sharing options...
ejparrott Posted November 20, 2013 Share Posted November 20, 2013 That's the separate heater ring yes. Most useful in cold weather with SVO running Quote Link to comment Share on other sites More sharing options...
Phil Hancock Posted November 20, 2013 Share Posted November 20, 2013 It wont get hot enough for SVO, it was an anti waxing solution with the older diesel for winter running, i had one on my 88". Power from ign sw to the temp switch in the filter head, from there to the element, from the element to earth. Peugrot 205/305 had a fuel filter with a bottom bowl that was.water jacketed and plumbed into the heater(IIRC) circuit to have the same effect. Quote Link to comment Share on other sites More sharing options...
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