clio 182 engine stalls on hard braking

[zaidHM]

hey guys
I have a problem with my Clio that when I hit the brakes really hard the engine stalls and sometimes on a normal use .

before i change my brakes at renault service center the car was fine but after i took the car it stalls on hard braking or some time on NORMAL braking
i went back to the service center and they told me that it was a problem with brake switch and he fix it but still the car is not fix and i need your help .
thanks

 

[White16valver]

Are you locking the front wheels and not pressing the clutch pedal?

 

[Mr Plums]

Maybe a vac leak or air in the system? Have these got a master cylinder booster?

@bloke might have some ideas, he knows these cars very well.

Hes probably too busy making cocktails mind :smiley:

 

[bloke]

Hes probably too busy making cocktails mind :smiley:

just made myself a zombie

what's idle like?

 

[zaidHM]

Are you locking the front wheels and not pressing the clutch pedal?

No

 

[zaidHM]

just made myself a zombie

what's idle like?

normal but when i am moving and i put the car in neutral the rpm stays on 1500 and when i stop it take time to drop

 

[zaidHM]

the told at the service center that its something with the brake switch but i don't know if its true or no

 

[White16valver]

Do they have a mechanical Idle Speed Control Valve that could be cleaned? Or are they all electronic?

 

[zaidHM]

Do they have a mechanical Idle Speed Control Valve that could be cleaned? Or are they all electronic?

i don't know but i think its electric

 

[White16valver]

@Mr. Plums' suggestion of an air leak in the system may be right - if there is air getting into the system then the idle would be wrong because the ECU would have conflicting readings between air being taken in through the filter and the mix of the exhaust gases going past the lambda sensor in the exhaust (I think...).

 

[White16valver]

Any use?
https://www.cliosport.net/threads/slightly-high-idle-exhaust-gas-monitor-light.814311/

 

[VXR killer]

Crank sensor?

 

[zaidHM]

@Mr. Plums' suggestion of an air leak in the system may be right - if there is air getting into the system then the idle would be wrong because the ECU would have conflicting readings between air being taken in through the filter and the mix of the exhaust gases going past the lambda sensor in the exhaust (I think...).

i don't know i need to check it

 

[zaidHM]

Crank sensor?

I don't think so because the car is running good and there is no check engine light

 

[VXR killer]

Crank sensors doesnt bring up any error codes that im aware. It could be that it needs cleaning.

 

[STEVE.M]

I don't think so because the car is running good and there is no check engine light

Can you get the codes read?
P0571 brake light switch circuit & P0120 TPS circuit malfunction are favourites.
Corroded wiring is a frequent cause.