SPONSORED LINKS

1988 Jeep Wrangler brake repiar

Tiny
DGERO5311
  • MEMBER
  • 1988 JEEP WRANGLER
Brakes problem
1988 Jeep Wrangler Engine Size unknown Wheel Drive Type unknown Automatic unknow miles

My grandson was given a jeep with brake problems
He has been advised to replace BOTH the master cylinder AND, power booster.
Why both?
How often does a power booster go bad? (I've never heard of it in my 59+ years!)
Shouldn't he replace one at a time - master cylinder first because it is easier?
SPONSORED LINKS
Saturday, December 22nd, 2007 AT 2:00 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

To check the booster operation, do this.

With engine off, pump brakes untill pedal is hard (no Vacuum) with foot on brakes start engine, pedal should suck down a little, this is normal, if the pedal is hard with engine running or you can hear a hiss when idling or brakes are applied booster is leaking vacuum. If no noise and brakes are hard check vacuum check vale is not blocked. These are the basic tests for booster operation, your mechanic should know these tests, if not move on to someone who can help you.

Mark (mhpautos)
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Saturday, December 22nd, 2007 AT 6:45 PM

Please login or register to post a reply.

Related Booster Content

VIEW MORE

Sponsored links