1992 Isuzu Trooper breaks

Tiny
MARCUSV143
  • MEMBER
  • 1992 ISUZU TROOPER
  • 147 MILES
Hello im having some break issues
well I changed the master and all 4 calipers and pads as well as the two front rotors and portioning valve . Now after all that all four breaks lock up

im not sure what is left please help
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Tuesday, November 5th, 2013 AT 3:38 AM

3 Replies

Tiny
KHLOW2008
  • EXPERT
Was this the reason for doing the brakes?
When does the locking occurs? After driving for some time etc?
Is vehicle equipped with ABS?
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Tuesday, November 5th, 2013 AT 4:57 AM
Tiny
MARCUSV143
  • MEMBER
Not sure if it has abs I was told it has rear abs(not sure how to find out ) I picked up the truck just this summer .

Reason was I needed an inspection. When that was done the repair man said the pedal was too soft and too low he failed me

so we took the wheels off and looked at the system and it all looked original
we bleed the system and notice that two front calipers weren't releasing so decided to change all four as well as the master and all 4 pads
bleed the system again and all seamed well so drove for a while (15-20 min ). Soon enough the front pads were smoking started to lock up (not sure if all 4 were locking ). We were stumped

a fellow repair man told me about the portioning valve under the master (that was changed) drove home and locked up again now all 4 were locked. To move the vehicle I released presser on one of lines on the portioning valve all 4 released -drove home

then we also adjusted a pin under the dash on the break pedal. This worked for a day. And first thing in the morning they locked again
I know when I push the truck (drive I little aggressive) it starts to build pressure
and seems going up hill tends to drag (not sure if that is just me being stressed out. Lol

thank you for your time
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Sunday, November 10th, 2013 AT 3:59 PM
Tiny
KHLOW2008
  • EXPERT
Check the brake pedal to booster push rod clearance. There should be at least 2 mm of free travel before the push rod pushes the booster.
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Monday, November 11th, 2013 AT 11:42 AM

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