FBH keeps going to lock out
 

My FBH pcb seems to keep going into lock out and removing fuse 8 does not unlock it.

It was repaired, worked then locked out. It was unlocked, worked then again seems to have locked out... wont fire up.

I'm have been earthing pin 3 to use it so the car is warm before I start it

Glow plug has been tested and was found to be ok.

What values should I get if I test the water pump and fan?

Anything else I should be testing?

Seems repairing is more expensive then replacing:eek:

macafee2

there are few things that can cause this.does the fan work ?is the water pump working? is the fuel pump ok?
faults with any of these will cause it to shut down.
i made up french mikes magic tester which is a bulb with holder.two bits of wire and two sewing needles.solder all together.then you pierce the live feed then place the other needle into the feed for the fan the light will come on and the fan runs etc.repeat the process for the other components before replacing any thing.or if you have access to a t4 put it on that i belive it can tell you whats is going on with these components.

Deffo do these checks! It will only start if everything is ok when in runs through it's check cycle.

As the pcb has it seems gone to lock out, can I still perform all these tests by earthing pin 3?

if I supply 12v from a battery to the water pump and fan, is this an acceptable way to test?

I don't have T4 but there is one not too far away

macafee2

check the fuse in the engine comp fuse box first.if then it works by earthing pin three you should be able to feel the air being sucked in the the fan intake and hear it.the water pump should also whirr into life.you can feel if its moving by touching the casing

I'll be on it tomorrow but am fairly sure all of these will work.

macafee2