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boode



Member Since: 11 Apr 2012
Location: Devon
Posts: 421

England 2003 Defender 90 Td5 HT Rutland Red
Thermo top E
While trying to dry the defender out after a deep puddle the Webasto has stopped pumping - no clicking nois.
I have tried the usual trick of removing the middle fuse just after turning on - but still no clicking and no heat
Any one know of any other tricks to try.
The pumps all work as it makes all the correct noises - just no pumping clicks.
Post #196245 24th Dec 2012 5:04pm
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bpman



Member Since: 21 May 2008
Location: Oslo
Posts: 8069

2008 Defender 110 Puma 2.4 SVX Station Wagon Santorini Black
Gavin, you mean the fuel pump has stopped running ?

if so, there could be an inline filter on it, some of them have tiny filters.
also, check for 12v on the connector at the pump end

Has the air intake been drowned ? if so, it could be a webasto out job ... SteveS had a similar problem a few weeks ago .. I've not heard exactly what the problem was.
Post #196286 24th Dec 2012 6:45pm
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boode



Member Since: 11 Apr 2012
Location: Devon
Posts: 421

England 2003 Defender 90 Td5 HT Rutland Red
I do not think that it is a water ingress problem because it worked fine for a couple of hours yesturday
It started fine today and warmed up - but when I came back to check it had stopped working
So probably a fuel blockage or fuel pump problem possibly
Post #196290 24th Dec 2012 6:52pm
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bpman



Member Since: 21 May 2008
Location: Oslo
Posts: 8069

2008 Defender 110 Puma 2.4 SVX Station Wagon Santorini Black
so it could be the filter, they are tiny ...
Post #196299 24th Dec 2012 7:01pm
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SteveS



Member Since: 05 Oct 2010
Location: Devon & Berkshire
Posts: 388

England 2009 Defender 110 Puma 2.4 USW Santorini Black
Yep - the whole unit was despatched to Webasto service agents who ran the diagnostics.

My symptoms were:
Ran it up for winter use, fired OK and went through a cycle, after approx 15mins a big cloud of steam shot out. So turned it off to ocme back to it later. On attempted restart the inlet fan was running (take off inlet filter/housing in the engine bay and look for suction) the fuel pump was ticking (so different to Gavins problem) then the unit just poured out loads of white smoke and then shut down. Tried this 3 times and sent it back to D44 as still in warranty.

The unit was tested and found to be fine with no fault found. However, the exhaust silencer was blocked with soot. Have now taken off the silencer and routed the exhaust pipe to be shorter.

Webasto say that I was not operating it properly as I ran it with it in low power mode for long periods (they say it needs to run at full power to stop coking up). After having an argument about "where does it say that in the Handbook?" we agreed that it was not my fault. So I'm not sure what that means for operating it in the future. The local Webasto agent thinks removing the silencer will help enormously and they have good experience of doing this - the increase in noise is hardly noticeable in any case.

I did wonder whether my Salisbury laning trip (4 ft deep muddy water) may have got mud in the unit but D44 said it was clean of mud

I plan to rig up a simple way of closing the exhaust pipe for summer use and wading. But realistically in the winter when you need the Webasto you don't want to be messing about with this......so only time will tell

I am waiting for Webasto to issue updated operating instructions........can't see that heppening. In the meantime it seems better to run the unit at say 30mins at full blast rather than say an hour when the second 30mins could be at low power.

However, I don't plan personally to change the way I use the unit....if it happens again then I shall just rod the coke out of the exhaust or get a new bit of cheap pipe
Post #196370 25th Dec 2012 11:53am
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bpman



Member Since: 21 May 2008
Location: Oslo
Posts: 8069

2008 Defender 110 Puma 2.4 SVX Station Wagon Santorini Black
SteveS - hi power / low power mode ... i did not know there were 2 modes, how do you switch between them ?

Merry Christmas
Post #196371 25th Dec 2012 12:10pm
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bpman



Member Since: 21 May 2008
Location: Oslo
Posts: 8069

2008 Defender 110 Puma 2.4 SVX Station Wagon Santorini Black
22mm copper fittings fit perfectly on webasto exhausts
Post #196434 25th Dec 2012 9:36pm
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SteveS



Member Since: 05 Oct 2010
Location: Devon & Berkshire
Posts: 388

England 2009 Defender 110 Puma 2.4 USW Santorini Black
you dont switch between - the unit automatically backs off the power output once things are up to temperature
Post #196568 26th Dec 2012 8:30pm
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