On a 92, the first thing I would think of is a bad flex hose going into
a bubble under pressure. There is one at each front wheel and one for
the two back wheels.

Second I would think of a bad master cylinder. When they fail
internally, it is usually more noticeable under light pressure than
hard. Does the brake pedal sink on you at a stop?

You do have a combination or proportioning valve, but when it gets out
of balance, the brake warning light is supposed to come on.

If you have ABS, then someone else would have to comment on their
problems as I know nothing about them.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
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TonyK wrote:
>
> Hi
>
> Hope someone can help out. Got a strange problem where under light braking
> (to a stop) the pedal will suddenly dip and the brakes come on fully. Very
> dangerous in slow moving traffic as its like doing an emergency stop!
>
> Local garage checked the brakes and cleaned out dust etc and said they
> couldn;t dinf any case but it still does it.
>
> Any suggestions?
>
> Thanks