fbh advice ?

regarding the fbh . never heard it before until tonight so its cold and i know it works but when driving i can hear a ticking noise from under the back seat it sounds like the indicator relay is this normal ?

regards mark

Sure, it's the small fuel pump dedicated solely to feeding the fbh.

It's under the driver's side wheel arch, behind the plastic liner.

Singvogel.

cheers mate i thought thats what it was but was not 100% sure. i read a post that you left about the fbh using 250ml per hour how true do u think this is

mark666freelander said:

cheers mate i thought thats what it was but was not 100% sure. i read a post that you left about the fbh using 250ml per hour how true do u think this is

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Wow, that was a long time back.

I got that fact from the Webasto Technical bods when I asked about the Themo-Top for info about timers and remote controls for the fbh.

So that's what the manufacturer quotes for the burners max consumption.

Mine can only run for a max of 30 minutes before it auto shuts off, if I use the timer to make it run with the engine off.

Starting the car from cold on a frosty morning it usually runs for 10 mins or so until the engine is up to it's normal temp of 78 degrees C.

Great piece of kit.

S.

lol am slowly learning how to use the search function on here to save me asking loads that been asked already

Sorry to jump on the thread, but how do i know when the fbh fires up? When should it fire up, what does it heat up (cabin or engine) and do I have one?

The fbh heats up the coolant faster on the cold days if u have one there will be a little exuhaust under the front bumper at the passanger side

Look for this:

Awesome! I have one not sure if this Is a good thing or bad! Now need to find out if it works...

You should be able to hear it firing up on cold mornings.

About 30 seconds after engine start mine makes a odd Chewbacca-like howl. You can also hear the fuel pump ticking away at the back of the car.

Dangermike said:

Awesome! I have one not sure if this Is a good thing or bad! Now need to find out if it works...

Click to expand...

It's a good thing!

Without it the coolant and thus the engine and the heater will take a good bit longer to get up to temperature in the winter.

The standard fbh has no separate driver controls and switches itself on when needed - i.e a cold start on a winters day when the temperature is around 5 degrees C or less. Sensor is no very accurate so the actual temp that will 'wake it up' may vary a bit.

So start the engine on a cold day then step out the front and look for exhaust vapour coming from the little exhaust under the passenger side bumper. Plenty noise and whirring too. You should also hear the pump in the rear wheel-arch ticking.

You could check fuse 5 in the engine-bay fuse-box. If the fbh has had a mis-start, a 'flame out', or some other fault, pulling the fuse for a couple of minutes will reset the fbh.

Some of us have fitted timers and/or remote controls (and an exhaust silencer) which mean that the fbh (and the heater fan) can run without the engine being on too.

The timer is worth it's weight in gold as it makes the system operate like a domestic central heating system, or a HGV night/cabin heater - switching on and off up to 3 times a day, for up to 30 minutes at a time.

Singvogel.