pontiac rear end locking up

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EdandMarg - 21 Jan 2007 20:19 GMT

Hi,
I have a 1990 pontiac tempest 6 cyl. It has a weird problem whith the rear
wheels or something locking up. When first started and reversed out of the
drive way and the brakes applied the rear passenger side raises up several
inches. If the vehicle is then driven forward and the brakes applied it
lurches to one side and the rear wheels appear to lock. If the vehicle is
driven for a few blocks it then perfoms normally. Sometimes there seems to be
a slight hot or burning smell. The rear brake shoes are in good shape.
Emergency brake working correctly and new shocks have been installed. The
local shop does not seem to know what is wrong.
Does anybody have any ideas for a fix?

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ds549@webtv.net - 22 Jan 2007 15:02 GMT

if its one brake locking, i would suspect the wheel cylinder or caliper
sticking , ive seen a collapsed rubber brake line cause ths also , maybe
if you have 2 rubber lines on the rear end,one is collapsed inside. the
springs on the shoes pull the shoes back in after braking , so maybe a
wheel cyl or rubber brake line is not letting the fluid flow back to the
mastercyl.

http://www.minibite.com/america/malone.htm

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EdandMarg - 26 Jan 2007 15:30 GMT

>if its one brake locking, i would suspect the wheel cylinder or caliper
>sticking , ive seen a collapsed rubber brake line cause ths also , maybe
[quoted text clipped - 4 lines]
>
>http://www.minibite.com/america/malone.htm

Hi
Thanks for your suggestions we tried everything but still had the same
problem. After exhausting all options we were left with changing the shoes
even though they looked perfect. It appears that one set were hardened in
some way and after applying the brakes and warming the wheels up they
operated normally. Anyway new shoes have fixed the problem.
Thanks, Ed

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