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www.VNCommodore.com Support Forums
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 Technical Modifications
 brake booster question
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spac89
P Plater


smurf03

47 Posts

Female

Posted - 05 Oct 2010 :  2:13:01 PM  Show Profile Send spac89 a Private Message
 
I replaced my master cylinder with a new one and bled the brakes now the brake warning light comes on and still no brakes.does that mean the booster has gone now ? will a standard vn fit or did they change the booster on the spac fe2 any help would be greatful ,Its funny when the brakes failed last time no warning light came on has only done this since new master cylinder was fitted .
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Mechknight73
National Driver


robot-robot14

1001 Posts

Male

Posted - 05 Oct 2010 :  2:58:35 PM  Show Profile Send Mechknight73 a Private Message
 
If your brake booster has failed, in theory your brakes should feel "wooden;" In other words, there's no give in the pedal. Before you start unbolting anything, check the vacuum hose that goes somewhere onto the intake manifold. If it is loose/perished, or just plain leaking, this will affect your brakes.

A standard VN brake booster is fine on an S Pack; there shouldn't be any difference at all. There might have been some difference between V8 and V6, but even that would be small.

All the vacuum booster does, is work like power steering for brakes. It just takes less effort to work the brake pedal. Once you've checked the vacuum hose and know it's fine, let the car idle, and listen around it. If it's badly knackered, you should hear the hiss of a vacuum leak somewhere.

Also, just make absolutely sure there are no fluid leaks in your brakes, from the master cylinders to the calipers on the wheels. Just to be absolutely sure.
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