workings of the fbh

[geo.k23]

hi all could someone please explain what is the function of the fbh and when it comes into operation does it switch on/off automatically how do i know when it is running excuse my ignorance this is my first car to have one fitted thank you for any replies

[macafee2]

it comes on when outside temperature is about 5 degrees or below and yes it comes on automatically once the engine is started and will go off automatically but there are various methods used to make it come on when you want, before you even have left the house.
It will heat the coolant but some have also wired In the cabin fan to come on.

You will hear the fbh working, it sound like a jet engine but not that loud.
Common for the cct board to have failed but frenchmike a member here repairs them.

If you can post what model yours is someone can tell you which pin you can earth to make your FBH come on when you want but you will have to disconnect the earth to make it go off as it will start and stop until the battery goes "flat" .

the fuel pump is just in front of the rear offside wheel, check this as common for the bracket to rust away and pump to rust but an normally be saved.
The fbh has its own water pump to circulate the water

oh, not unheard of for the glow plug to fail but you can service the fbh yourself.

if it does not fire up come back with what happens and someone will help but also search the forum for how to test it

macafee2

[geo.k23]

Originally Posted by macafee2

it comes on when outside temperature is about 5 degrees or below and yes it comes on automatically once the engine is started and will go off automatically but there are various methods used to make it come on when you want, before you even have left the house.
It will heat the coolant but some have also wired In the cabin fan to come on.

You will hear the fbh working, it sound like a jet engine but not that loud.
Common for the cct board to have failed but frenchmike a member here repairs them.

If you can post what model yours is someone can tell you which pin you can earth to make your FBH come on when you want but you will have to disconnect the earth to make it go off as it will start and stop until the battery goes "flat" .

the fuel pump is just in front of the rear offside wheel, check this as common for the bracket to rust away and pump to rust but an normally be saved.
The fbh has its own water pump to circulate the water

oh, not unheard of for the glow plug to fail but you can service the fbh yourself.

if it does not fire up come back with what happens and someone will help but also search the forum for how to test it

macafee2

thank you macafee2 does it only come on when you start the engine i will post the model number when i get my car back that is in the trimmers getting the headlining recovered thanks again

[macafee2]

Originally Posted by geo.k23

thank you macafee2 does it only come on when you start the engine i will post the model number when i get my car back that is in the trimmers getting the headlining recovered thanks again

In it's standard set up, yes only when the engine comes on.
Go flash, activate it by text message, timer or manually by earthing it.
10 -15 minutes later you have a warm engine and still enough in the battery to start it. This is not only good for you but good for the engine

macafee2