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Focus Brake Pedal Goes Hard On Second Push


nickla
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Hi,

I've got a Focus Sport TDCI 2006.

It recently developed an issue with the brakes where the pedal goes hard under repeated use.

If I pump the pedal, the first push is ok and applies the brakes as expected, but subsequent pushes are hard, like the servo assist has dissapeared - the brakes still work but considerable force is required to push the pedal. It seems to recover after a few seconds, and I can then repeat the process.

From what I have read it sounds like a vacuum problem, and my local mechanic ran some quick tests and suspects that a new brake servo is required (~£350 for the new part and ~£350 for the labour). But, he also thought there is a chance it is the vacuum pump.

I don't want to spend £700 to fit a servo and find the problem is the pump instead.

Can anyone give me some advice?

Also, I notice that second-hand brake servos are quite common and I can easily source the correct part for my car - is fitting a second-hand servo a good option?

Many thanks,

Nick

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In addition to your suspicions - when was the brake fluid last changed ?

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when was the brake fluid last changed ?

I'm not sure as I don't have my service history to hand - I've kept up with the service schedule but I don't remeber seeing brake fluid change on the bill recently. I can check later today.

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I'm not sure as I don't have my service history to hand - I've kept up with the service schedule but I don't remeber seeing brake fluid change on the bill recently. I can check later today.

Every 2 years is the recommended interval

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Could old brake fluid cause the problems I described?

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Yes it could.

& so could the issues you have already identified, so whatever the root cause, I'd change the brake fluid for optimal braking efficiency if not changed within the last 2 years.

It's a service item like oil & filters etc & is often overlooked

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Brake fluid was done 22 months ago - so it's due a change, but not overdue

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disconnect the vacuum hose engine running and see if it has suction on the hose if it does its the servo

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Lack of vacuum or the servo. Brake fluid won't cause the pedal to go hard.

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The pump is creating vaccum - this has been tested.

I think I will just bite the bullet and get a brand new servo fitted.

While I'm tempted to try a second hand one the labour cost to fit it is quite high (350) so if the part is wrong or no good I'd end up paying at least that again.

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i think that's your best bet cant you supply your own parts make it a bit cheeper

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  • 1 year later...

I have same car and same fault.

what was wrong with your car in the end? I went into ford today and was quoted over £500 for the servo and if it's another £350 for work then it's getting expensive.

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