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Robert, Peugeot Technician
Category: Peugeot
Satisfied Customers: 4709
Experience:  Fully qualified 19+yrs exp/self employed technician in the UK
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(NNN) NNN-NNNN1400.Brake pedel pressure feels fine when engine not

Customer Question

(NNN) NNN-NNNN1400.Brake pedel pressure feels fine when engine not switched on but when it is there is no pressure at all.Brake fluid was low but have topped it up and its still the same.
Submitted: 5 years ago.
Category: Peugeot
Expert:  Robert replied 5 years ago.



Hopefully i can help..


First checks to make seeing as you've had to top your fluid up would be to check very carefully for any possible leaks from the braking system on the car - this inc the calipers on the front / the hoses back to the abs if fitted then abs to master cylinder - on the rear check for leaks at either wheel inner side / the lines from them to compensator if fitted - from compensator all the way to abs etc..its vital you do check for any possible leaks - one option would be to try re-bleeding the brake system again provided there are no leaks present if you can to ensure there is no air in the system if you can - if not then im sure any good local mobile technician will be able to this for you.seeing as the car is basically undriveable in that condition..the only other likly culprit could be a bad master cylinder internally "seals" - the booster/servo can be tested - engine off / pump the brakes several times till pedal is hard then with brake still applied,start engine up the brake pedal should then soften.if the pedal stays hard as before the booster is bad or vaccum tube/one way valve...