Seized Caliper?

[Gregg]

Evening all,

recently my brake pedal has felt spongy and can push it nearly to the floor. I've had the brakes bled, discs and pads are new(ish) too. Is this systematic of a seized/sticking caliper? Haven't had a chance to look and to be honest wouldn't know what I should be looking for!

I'm guessing a new caliper would be rather expensive, does anywhere offer refurbed ones e.g. on an exchange basis?

 

[mickstoke]

sounds like a servo or master cyclinder problem to me!

 

[Henry]

was thinking the same (master cylinder)

they're probably not all that expensive, although fitting looks as though it could be a struggle on the Sports

 

[caister]

Could possibly do it through the drivers side wheel arch but it doesn't look a fun job.

 

[cat171]

GSF used to do them. I had a seized one years ago (not on the vee) but another clio.

 

[Gregg]

cheers for the quick replies! think i'll take it in to renault and see what they say

 

[MRBILLYUK]

If it is a sezied caliper . It might be more simple than you think . You'd have to get it confirmed it is that though .

Can easily be sorted with a bit of grease inside the caliper body itself . My 172 failed it's 2nd MOT on this , greased the piston / inside the caliper and Bobs your uncle it passed the retest

 

[Renault Davey Boy]

I think Renault stealers will say thanks thats 200 quid just for looking

 

[Cupster]

Jog Renault on.

I had a stuck caliper slider. Made the pedal feel really spongey and braking was obviously rubbish and weak. One was completely seized.

I'm no spanner monkey but I had a go myself, I couldn't get the slider free so I got a second hand complete caliper and replaced it. Well I used my original caliper and just transferred the caliper carrier and sliders from the second hander (All cleaned and regreased) = Done.

Just ensure you tighten the bolts nice and tight.

 

[Gregg]

Went into renault today (had the bonnet catch replaced so got them to have a look at the brakes as well), apparantly there's nothing wrong with the brakes :S

The guy said you're supposed to be able to push the pedal to the floor so you don't over pressurise the master cylinder! Which is probably a load of b****cks!

So think I'm going to have a look tomorrow, clean up and re-grease the sliders and hopefully that'll fix it

 

[Jonny1*2]

mine does this too. You can push the pedal to the floor. No idea why. Brakes are a bit dodge at times. Very unpredictable

 

[caister]

Went into renault today (had the bonnet catch replaced so got them to have a look at the brakes as well), apparantly there's nothing wrong with the brakes :S

The guy said you're supposed to be able to push the pedal to the floor so you don't over pressurise the master cylinder! Which is probably a load of b****cks!

So think I'm going to have a look tomorrow, clean up and re-grease the sliders and hopefully that'll fix it

Really have to love renault dealerships and there bullshit answers. The pedal should not go to the floor. Check your pistons and sliders but I still think you need a new master cylinder or theres air in the lines somewhere.

 

[Jonny1*2]

is there any way of finding out if the master cylinder is buggered? Presumably it wouldn't show up on diagnosics?