Sounds like the power booster to me. Is the vacuum line connected from the
booster to the engine and are you sure it doesn't leak?
RayB
http://www.dragtruk.com/ENTRIES/20KM1FD2KWBP.html
> -----Original Message-----
> From: owner-dakota-truck@bent.twistedbits.net
> [mailto:owner-dakota-truck@bent.twistedbits.net]On Behalf Of TJ Goettner
>
> Its an 88 Jeep Cherokee, 4wd Limited etc etc... Anyway, I don't really
> drive the thing much, cause I bought it mainly to haul my 4wheelers around
> and haven't had much time to do that lately. But I noticed that
> the brakes
> seem very weak. You have to put all of your butt into pushing on
> the brakes
> to get the fronts to lock at any speed. I suspected to rear brakes, so I
> jacked it up, put it in drive and held the brake down. It doesn't take
> hardly any gas at all to turn the wheels. If you have someone
> hold it, you
> can almost turn them by hand with all but full pedal applied. They Have
> been bled, extensively and know that is not the cause. Adjusting
> them does
> no good.
>
> What I'm wondering is if the proportioning valve is closing too
> soon because
> it is bad and not letting enough pressure go to the back brakes before
> applying the fronts, and not letting anymore to the backs as the pedal is
> applied harder. Has anyone seen this happen??
>
> TJ
This archive was generated by hypermail 2b29 : Wed Sep 01 2004 - 00:53:41 EDT