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boode

Member Since: 11 Apr 2012
Location: Devon
Posts: 429

Thermotop E no fuel

My Thermotop E was working fine - then it stopped clicking and no fuel was pumped
There is plenty of fuel in the tank

I have tried removing fuses - but still no priming clicks of fuel
Everything else sounds normal

Any ideas ?

Last edited by boode on 16th Feb 2017 1:01pm. Edited 1 time in total

16th Feb 2017 7:55am

Mo Murphy

Member Since: 01 Jun 2008
Location: Letchworth Garden City, Herts
Posts: 2227

1984 Defender 90 BMW M57 3.0 Diesel HT Auto Pennine Grey

Broken pump ?
Mo The Land Rover 90 - Many are called, few are chosen.

50 Shades of Pennine Grey

16th Feb 2017 9:52am

shaggydog

Member Since: 12 Aug 2012
Location: Kent
Posts: 3347

1991 Defender 110 200 Tdi USW Arles Blue

Unplug the pump and Jury rig a lightbulb to the connections.

If it flashes when you try and fire it up the pump is dead, if it doesn't then there may be a break in the cable or a fault with the controller.

is where I would start, I'm by no means an electrical expert but it may save hours of stripping and buying parts speculatively. Running Restoration Thread http://www.defender2.net/forum/post323197.html#323197

Self confessed mileage hunter

16th Feb 2017 1:10pm

boode

Member Since: 11 Apr 2012
Location: Devon
Posts: 429

Thanks Shaggydog
I did not install the heater myself
Is the pump located on top of the fuel tank ?
That is where the clicking noise use to come from
So do I need to drop the tank for access ?

16th Feb 2017 1:16pm

shaggydog

Member Since: 12 Aug 2012
Location: Kent
Posts: 3347

I'm afraid I couldn't say without looking.

I put mine in the rear wheel arch as the pickup for these pumps isn't that great so it will be close to the tank somewhere.

Failing that, where did you get it installed?

Give them a ring they may be able to diagnose it or take a look

Running Restoration Thread http://www.defender2.net/forum/post323197.html#323197

Self confessed mileage hunter

16th Feb 2017 1:19pm

boode

Member Since: 11 Apr 2012
Location: Devon
Posts: 429

Found the pump and tested the wires with a volt meter
The earth earths fine
Volt meter reads a constant 8.5 when turned on
I thing something has gone wrong - so a trip to the garage

16th Feb 2017 5:30pm

NickMc

Member Since: 01 Oct 2014
Location: Norn Iron
Posts: 1624

I don't know the Thermotops, but the Eberspachers are very voltage sensitive, check your battery.

20th Feb 2017 12:36am

Andrew james

Member Since: 02 Jan 2013
Location: Awliscombe
Posts: 88

2015 Defender 110 Puma 2.2 USW Indus Silver

There may be a blockage in the fuel line, after the pump or as it enters the heater. It will not pump against a pressure hence not getting the clicking sound. If you can disconnect the fuel line after the pump and try starting the heater you can see then if it's the pump or is a blockage, as the pump will click again.

20th Feb 2017 9:09pm

boode

Member Since: 11 Apr 2012
Location: Devon
Posts: 429

Thanks Andrew - I eventually found some time and disconnected the fuel line after the pump and the pump worked fine.
I then disconnected the line as it enters the heater block and then blew out the line with an air hose.
Re connected everything and webasto now working perfectly - just in time for summer

9th Apr 2017 3:46pm

Andrew james

Member Since: 02 Jan 2013
Location: Awliscombe
Posts: 88

9th Apr 2017 7:54pm

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