I may have been the one who spoke of priming the switch. All I know is that
bleeding the system wasn't working. I bled the system and it felt just like it
always does but the switch wouldn't work. If I rapped the switch with a
wrench, it would work. I'd turn off the ignition, turn it back on and it
wouldn't work. I figured that if there is a pocket of air in the switch, that
can't be good. So I took a syringe and filled the switch with fluid.
I think what finally made the switch work was exercising it and freeing it up.
I carefully took a thin bit of dowel and moved the diaphram inside the switch a
couple of dozen times. Then I installed it, bled it and it worked. So far so
good. God only knows how long these switches have been sitting in their boxes
before they come to us.
> Paul I did a switch swap a while back and bleed the brakes at the
> switch and the pedal was as firm as ever being a nut about bleeding
> brakes I went ahead and bleed the entire system, but I bet if you did
> not monkey around keep feet of the brake pedal while doing the switch
> swap it would be OK. On the priming thing never heard of it for a brake
> switch now to get my Dad to do any work for me takes a certain amount of
> priming but it has nothing to do with brake fluid.... Jim E
>
> Paul Heuer wrote:
>
> >Hi all,
> >I also have brake light problems on my car. I've bought a new switch
> >from SS, and my Father will install it shortly (I'm away from the car at
> >present).
> >
> >I thought it was a 'swap switch and bleed brakes' process, until I read
> >a post that said 'prime the switch'. Why? Does this mean you don't need
> >to bleed the brakes if you prime the switch? How does one prime it?
> >
> >So many questions...
> >Cheers,
> >Paul.
> >S3 Alpine
> >
> >.
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