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Old 06-14-2006, 10:38 PM
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subzali subzali is offline
Rising Sun Member
Join Date: Aug 2005
Location: Denver CO
Posts: 8,609
Angry help! brakes again

Brakes don't behave ANY differently than before. I got a NEW OEM AISIN master cylinder from Burt this afternoon, bench bled it, installed it, bled the brakes, and gave it a try.

Pedal travels fairly far on the first pump (6-8 inches), and stops the truck pretty fast when moving. Second pump travels less, harder to stop the truck (feels more like braking with the engine off), third travels less etc. (basically it is pumping up)

Engine idle gets jumpy and idles down slightly when pumping the brakes at idle just sitting in place. Pedal swooshes somewhat like before.

We think there's still a little air in the lines, but not much because the pedal isn't squishy, once it gets hard it's hard.

1) Does it sound like the booster I yanked off of the FJ60 is also a bad one?
2) If the booster is bad, is there still a danger (as I guess there was before) of running 5 and 6 cylinders lean and burning stuff?
3) Cany somebody or everybody with an FJ40/55 describe what their brakes do? Or confirm if they observe the same behavior from their brakes?
4) Did I miss something in the bleeding procedure?
5) I had to cut the rod on the new booster, does it sound like I may be having a conflict with that?
6) Any other ideas? Wheel cylinders seem to be fine, no leakage or anything... help
Matt Miller
TLCA# 13684
1977 FJ40 2F "Brahma" + Lockright, tach, Warn 8274, FJ60 Power Steering, no more Sanden OBA (factory emissions), so Puma OBA
1996 FZJ80 1FZ-FE factory lockers + Safari intercooled turbo, Warn M12000, OEM CDL switch, cup holder, and hand throttle, Metric TLC leather, heated seats, JDM switches, Puma OBA
2000 Tundra Limited TRD 2UZ-FE SOLD
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