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Brianr70

130i brake challenge

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At the moment when you first drive the car the brakes seem very hard to use like you really need to stand on the brake pedal to stop the car? Sometimes after a bit of driving 'normal service' resumes. Any ideas on what could be the issue? does need new pads in the next 5000kms.

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Does the pedal feel like it does when you press it with the engine off? Kinda sounds like an issue with the booster 

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Yep when the car is parked with engine off the brake pedal feels the same as when driving?

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Sounds like the booster is not working like Kelvin said.  Check for the obvious like vacuum leaks.

Are there any codes logged?

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No fault codes appearing..if it is the booster would it be wise to replace it ?

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Basic stuff first - when was the fluid replaced? What condition are the pads and rotors in? Is it something dumb like just needing bleeding? 

Edited by Jacko

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Forgive me if this is a silly question, but do these run a vacuum pump, or do they just use manifold vacuum?

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Vacuum pump, and some googling shows this isnt an uncommon issue. Be worth checking/replacing the pipe from the pump

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wouldn't you know it took car to friendly mechanic today to check brakes and on the way there brake pedal was hard and when they did a couple of tests drives brakes performed normally ??? so i guess need to monitor situation 😎

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Success, turned out to be a loose hose from the booster, reattached securely and all is well 😎

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