Idle goes up and down when braking?!?!?!?

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1.8T Secret love

1.8T Secret love

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Salut, mon mazda KLZE ''bounce''quand je brake aux lumières ou aux stop...quand le moteur est froid ca va...mais quand il est un peu réchauffer...le idle goes up and down pis la pédale devient plus dur et plus molle (à cause de la compression du brakes fluid)...svp aider moi à résoudre ce problème là...C'est tu juste un sensor ou une switch du idle qui short avec mon systeme de brakes??? :dunno:
 
u got only 2 snsor or 3 on 4 on ur altenator, then when ur stop, its only battery that fill ur engine.
Fact alternator dosent make the job battery is always low and dont give u enough energy when ur not moving.. i add taht probl whit my acura teg 91....

could be some else but try that,, later!
 
i didnt understand your reply because you cant seem to write properly but i think



moi j pense que c'est plutot un probleme de brake booster ou d'un vacuum qui va du brake booster ca se peut que sa soit quelque chose d'autre mais je suis pas sure
 
Scipion said:
u got only 2 snsor or 3 on 4 on ur altenator, then when ur stop, its only battery that fill ur engine.
Fact alternator dosent make the job battery is always low and dont give u enough energy when ur not moving.. i add taht probl whit my acura teg 91....

could be some else but try that,, later!
Click to expand...


If the altenator wasnt charging proporly then it's be stalling more than anything..


Idle and braking are diffrent problems.. the idle would be the oxygen sensor, but i'm not advanced on brake systems so i cant really help you out there.. maybe there's just air in the lines?
 
Air in the lines wouldn't make the engine rotate faster.

Most likely be a vaccum issue.

OR

It's not when you brake, it's when you get in neutral (idle).
That would be maybe your EGR valve that is clogged, or, again, vaccum.
*not sure* Could also be your PCV valve that is clogged.

Check your vaccums around your throttle body, make sure everything is clear and not clogged.

Clean your throttle body at the same time and PCV valve.. ;)
 
Thanks everyone, but the problem rwally is when I'm hitting the brakes and holding 'em on a stop or on a traffic light, seems like my brake fluid pump's gives big problem to my motor, is the pumps f.uc.k.e.d up??? :dunno:
 
pourquoi a tous les fois que quelqun parle dun moteur qui se crosse en pesant sur les freins ya toujours des pablo qui parle de lalternateur???? personellement jai jamais vue sa.... habituellement ces bin plus un vacum..... si toi tu sent ta pedal bouger je garderais en tete peut etre un probleme dabs ou de modulator valve dabs....
 
probably the best to try finding out how much the whole braking system costs, at that point i'd replace the whole damn system to make sure they dont fail.
 
Actually, it might be a vaccum problem...but no abs problem cause I don't have it. For the replacing matter, it might not be a bad idea...what would anyone suggest for a mazda protege 2nd gen... Thanks:dunno:
 
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