GQ Shudder under brakes

Submitted: Wednesday, Apr 14, 2004 at 15:53
ThreadID: 12038 Views:1067 Replies:4 FollowUps:0
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My 89 Gq has developed a shudder when slowing to a stop. It is quite violent and i would liken it to the shudder you feel as the motor is about to stall
it is only noticable during the last 5-10m of braking. I have tried braking with the engine switched off and the shudder does not occur which leads me to believe it is not calipers, bearings or bushes. It makes no differrence if I am in gear or out I havent changed anything on the car recently or hit anything. Everthing under the car seems solid, nothing vibrating at idle. Oh yeah, it only does it going forward not in reverse.
Got me buggered! Any ideas?

Jim
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Reply By: tour boy - Thursday, Apr 15, 2004 at 07:42

Thursday, Apr 15, 2004 at 07:42
sell it and buy a tojo
AnswerID: 54312

Reply By: Bilbo - Friday, Apr 16, 2004 at 21:56

Friday, Apr 16, 2004 at 21:56
If its a petrol engine then I reckon you've got a small hole in your vacumm assisted brake master cylinder.

As for the "not in reverse" bit - coincidence

Blibo
AnswerID: 54617

Reply By: Bilbo - Friday, Apr 16, 2004 at 21:58

Friday, Apr 16, 2004 at 21:58
Mkae that " in the brake master cylinder vacuum DIAPHRAGM"

B
AnswerID: 54618

Reply By: Dirt - Friday, Apr 16, 2004 at 22:19

Friday, Apr 16, 2004 at 22:19
check out your engine and gearbox mounts, i had a very similar sounding problem but in reverse, replaced the mounts and the problem was fixed
AnswerID: 54626

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