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post #1 of 4 (permalink) Old 26th March 2011 Thread Starter
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Espace Mk3 brakes problems

Hi, new to the forum. I have a 2000 Grand Espace 2.2dT. The front brakes dont appear to be applying the pressure needed to stop the car with the discs not appearing clean despite some heavy use. There is also an imbalance on the braking and a strange grinding noise. This has all happened since i had some new discs fitted before Xmas. I think its the servo/master cylinder rather than the calipers. The car passed its MOT last month so any problems should have shown then.

So, after suggestions - Is there any easy way to tell whether its servo or master cylinder?

Any help much appreciated.

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post #2 of 4 (permalink) Old 26th March 2011
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Re: Espace Mk3 brakes problems

Hello and welcome to the forum.

A faulty servo will give a hard brake pedal with reduced braking effort.To test,sit in the car and pump the brake pedal a few times,then start the car whilst holding pressure on the pedal,you should feel it drop slightly and this is showing that the servo is physically working.The vaccum pumps can become weak after time and the pedal may intermittantly become hard whilst driving.

A master cylinder fault will usually give a long pedal which can be then pumped up,but instantly returns to the lower position if left.

If the problem has only happened since the new discs were fitted then you have to suspect something that was disturbed during their replacement.You need to have the parts removed and checked as it sounds to me like either one of the caliper slides is seized (a very common thing) or the pads are seized into the carriers.Any imbalance across the axles should have shown up on the MOT brake test,but the limit is 25% which means that a car can happily pass but still pull one way under braking.

Obviously as this is brakes we're talking about you need to have them checked asap.

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post #3 of 4 (permalink) Old 26th March 2011
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Re: Espace Mk3 brakes problems

Could be master cylinder seals lips turned backwards
seen it happen on a few occasions. Does happen
sometimes if front brake hoses are not clamped and
bleed nipples left open whilst pushing back pistons
into calipers. Won't account for grinding though Hth
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post #4 of 4 (permalink) Old 27th March 2011 Thread Starter
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Re: Espace Mk3 brakes problems

Cheers Guys. Thanks for your help. I will keep you posted on the solution.
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brakes , espace , mk3 , problems

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