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Usual Suspect
3NE 2NR for life
Joined: 22 Apr 2006
Tech posts: 211
Location: Somewhere i shouldnt be
My 2NRide: Nissan B12 Sentra
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 Posted: Tue Jul 22, 2008 9:17 pm
Post subject: Brake Booster |
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| want to know if my booster goin bad right now when the car idling and in pump the brakes the car idle does dip almost to cut off and when driving the pedal dips when i tip it does this mean my booster is going |
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jeepers
3NE 2NR for life
Joined: 05 Mar 2006
Tech posts: 168
Location: doing my masters in hustling!!
My 2NRide: Mazda 323 protege
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Posted: Tue Jul 22, 2008 10:07 pm
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| well same happened with my previous car.and it was indeed the booster.but can also be other thinmgs.wait for the pros to respond |
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OldSkoolRule
Sweet on this forum
Joined: 03 Oct 2007
Tech posts: 321
Location: Waller.. er, um, Pierre Road
My 2NRide:
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Posted: Wed Jul 23, 2008 2:31 am
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| no, the idle dipping, has to do with the fac that when you pump the brakes, you're forcing air into the intake, threreby unsettling the fuel/air mixture, etc. any time you brakes becomes extremely hard, as if the engine were off, your booster is goin. |
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THE SYNDICATE
I LUV THIS PLACE
Joined: 13 Feb 2007
Tech posts: 977
Location: Drowning My Sorrows With a Cold HEINEKEN....
My 2NRide: Nissan B12 Sentra
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Posted: Wed Jul 23, 2008 6:36 am
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I'm not to sure,but if the idle dips that means ur leakin vacum,so the booster could b going bad.
Isn't a speongy peddle a sign of a bad booster as well?
*waitin to b corrected* |
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buzz
Sweet on this forum
Joined: 23 Nov 2007
Tech posts: 343
Location: flippin 'activation switches'
My 2NRide: TVR Cerbera
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Posted: Wed Jul 23, 2008 11:18 am
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I'm not to sure,but if the idle dips that means ur leakin vacum
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NAFAIK
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Isn't a speongy peddle a sign of a bad booster as well?
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sometimes but try bleeding the system first
0.02 |
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X_Factor
Shifting into 6th
Joined: 27 Apr 2003
Tech posts: 2104
Location: st augustine
My 2NRide: Mitsubishi Lancer
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Posted: Wed Jul 23, 2008 11:28 am
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| when i had this problem, the mechanic took of the vacuum hose to the booster, plugged it and i drove a little bit to see if the idle was still dipping, i cant remember honestly but i didnt change the booster but there was a leak in one of the vacuum lines and well the problem sorta sorted itself out |
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Usual Suspect
3NE 2NR for life
Joined: 22 Apr 2006
Tech posts: 211
Location: Somewhere i shouldnt be
My 2NRide: Nissan B12 Sentra
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Posted: Wed Jul 23, 2008 10:02 pm
Post subject: |
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| ok ill check my vaccum lines and bleed the system first b4 i change the booster |
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OldSkoolRule
Sweet on this forum
Joined: 03 Oct 2007
Tech posts: 321
Location: Waller.. er, um, Pierre Road
My 2NRide:
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Posted: Wed Jul 23, 2008 11:10 pm
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The point of having a brake servo/booster is to soften the pedal!!!! if the pedal soft when the engine running, booster good!! bleed the bleddy brakes!!!(no pun intended  ) |
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TKO_69
Ricer
Joined: 03 Jul 2008
Tech posts: 22
Location: in de driver seat once again
My 2NRide: Nissan B13 Sentra
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Posted: Thu Jul 24, 2008 7:44 am
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no, the idle dipping, has to do with the fac that when you pump the brakes, you're forcing air into the intake, threreby unsettling the fuel/air mixture, etc. any time you brakes becomes extremely hard, as if the engine were off, your booster is goin.
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yes this is true changed two boosters in one of my cars already. on the flip side if your pedal beomes very soft and you need to sink it right down to get a response then it the master cylinder. |
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