Bonjour Pommes Frites - sa va?
It's such a shame we aren't going to get to meet when I come over - I could really teach you a few tricks on how to properly insult the English!

(Cheesy knob head not
too bad though! :lol: )
L300's do have their own form of
ABS - it means
Absolutely
Bl00dy
Sh1te!! :lol: :lol: (unless you have them set correctly!

)
MardyDelica is right about the brakes.....although the L300 calipers are a LOT less likely to sieze compared to the L400's! 8) The calipers are fairly robust, so pistons don't seize that often, but worth a check anyway. Sliding bolts could possibly do with cleaning up and greasing while you have them apart (NOT copper grease though!)
The front brakes are very sensitive when it comes to pads, and cheap ones can glaze VERY quickly....so pop these out and check them. Glazed pads mean a lot less braking efficiency, so you get no braking for ages, then suddenly they bite because you're standing up on the pedal!!
Run the sharp edge of a screwdriver over the surface of the pad - if it scores into the pad, they are fine, but if the pad is shiny and the blade hardly marks the surface, change them straight away!
Genuine Mitsubishi pads or Ferrodo pads (#FDB556 ) are the
only ones I would put in an L300....
Rear shoes often need adjusting (as Mardy has pointed out) and this can make a HUGE difference to the braking efficiency! Get them adjusted and see if this improves things?
Another possible cause of you locking up & sliding all over the place is torsion bar adjustment! (Have you still not done it yet you lazy onion? :P )
I did post an answer to your question
HERE but being the lazy a$$ed grenouille that you are, I assume that the ride height is still low on the front?

:lol:
Before I ever raised my torsion bars, my motor would nosedive badly under heavy braking causing the back end to lock up and snake all down the road - causing the oncoming cars to dive out of the way and making me reasses if I should wear brown trousers every time I drove the Delica!
Cranking up the torsion bars made braking much more consistent and no locked up wheels/tyres! :D :D
Just something else for you to do with all your spare time you idle toad! :lol: :P
Regards,
Bruce.