Need Help: Brake pedal pulsating!!!

stevie · 26th October 2006, 12:36

hi

before i tell u the problem, a brief about my car.

I own an OPEL CORSA SAIL 1.4, has run about 8,500kms and completed a first servicing.Last week i got my wheels balanced and aligned at vijay wheeel alignment centre,bangalore.

The problem:

Everytime i brake the car i have noticed that the brake pedal pulsates and vibrates, there is not shudder or vibration of the body but just the pedal.the brake works just fine but the vibration of the pedal worries me.
I went back to the alignment centre and got the camber rechecked and it was fine.even the lug nuts have been fixed properly.

i called garuda (the car service centre) on ulsoor road and they told me that its not a serious prolem.it may be that the brake is warped and may need to be machined and the problem will disappear.
i read up an opel/vauxhall corsa forum and one of the members was sharing about a similar problem and said that once he got it machined, the braking has become smooth as ever.

All this is confusing me.can any of the profesionals here throw some light on the problem?

(maybe SAP is reading this too, please give me your inputs, thanks in advance)

esteem_lover · 26th October 2006, 12:55

well, i am not an expert. from experience, i can tell you that your break pads/shoes are uneven & need to be replaced ASAP. maybe your drum is also a culprit. just do what the mechanic says & see if that solves the problem

stevie · 26th October 2006, 14:17

Quote:

Originally Posted by esteem_lover

well, i am not an expert. from experience, i can tell you that your break pads/shoes are uneven & need to be replaced ASAP. maybe your drum is also a culprit. just do what the mechanic says & see if that solves the problem

thanks will get that checked immediately

Kevin Johnson · 26th October 2006, 18:35

Watch to see that the wheel lug nuts are properly torqued when the vehicle is serviced. That doesn't mean zipped on with an air gun but rather final even tightening with a proper torque wrench. Unequal stress on the fasteners can speed up warping. Refinished disks and rotors will warp more quickly as well, remember. This is why some owners/shops like to replace them with new components rather than turning them down on a lathe.

stevie · 27th October 2006, 20:41

problem fixed....and yes it was slightly warped and they had to lathe it down.thanks guys.now i can sleep in peace!!

26th October 2006, 12:36	#1
stevie BHPian Join Date: Mar 2006 Location: bangalore Posts: 119 Thanked: Once View My Garage	Need Help: Brake pedal pulsating!!! hi before i tell u the problem, a brief about my car. I own an OPEL CORSA SAIL 1.4, has run about 8,500kms and completed a first servicing.Last week i got my wheels balanced and aligned at vijay wheeel alignment centre,bangalore. The problem: Everytime i brake the car i have noticed that the brake pedal pulsates and vibrates, there is not shudder or vibration of the body but just the pedal.the brake works just fine but the vibration of the pedal worries me. I went back to the alignment centre and got the camber rechecked and it was fine.even the lug nuts have been fixed properly. i called garuda (the car service centre) on ulsoor road and they told me that its not a serious prolem.it may be that the brake is warped and may need to be machined and the problem will disappear. i read up an opel/vauxhall corsa forum and one of the members was sharing about a similar problem and said that once he got it machined, the braking has become smooth as ever. All this is confusing me.can any of the profesionals here throw some light on the problem? (maybe SAP is reading this too, please give me your inputs, thanks in advance) Last edited by stevie : 26th October 2006 at 12:48.
	() Thanks

26th October 2006, 12:55	#2
esteem_lover Senior - BHPian Join Date: Jul 2006 Location: Madras/Py Posts: 7,556 Thanked: 502 Times View My Garage	well, i am not an expert. from experience, i can tell you that your break pads/shoes are uneven & need to be replaced ASAP. maybe your drum is also a culprit. just do what the mechanic says & see if that solves the problem
	() Thanks

26th October 2006, 18:35	#4
Kevin Johnson Newbie Join Date: Oct 2006 Location: Tampa, FL USA Posts: 9 Thanked: 0 Times	Watch to see that the wheel lug nuts are properly torqued when the vehicle is serviced. That doesn't mean zipped on with an air gun but rather final even tightening with a proper torque wrench. Unequal stress on the fasteners can speed up warping. Refinished disks and rotors will warp more quickly as well, remember. This is why some owners/shops like to replace them with new components rather than turning them down on a lathe.
	() Thanks

27th October 2006, 20:41	#5
stevie BHPian Join Date: Mar 2006 Location: bangalore Posts: 119 Thanked: Once View My Garage	problem fixed....and yes it was slightly warped and they had to lathe it down.thanks guys.now i can sleep in peace!!
	() Thanks