Puzzled by brake issue.
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Model: Cherokee
Puzzled by brake issue-resolved
I just bled the brakes on my '97 I6, and I now have a problem. When I go to stop, the brakes work fine until I'm almost stopped. Then the pedal sinks a little and judders for a second or two, and then firms up again. No warning light comes on or any sign of a leak. ABS is working fine too. Apart from that, the brakes work fine.
The brake pedal holds firm when testing with the engine off.
Anyone know what I've broken?
Rob
The brake pedal holds firm when testing with the engine off.
Anyone know what I've broken?
Rob
Last edited by longship; 06-01-2010 at 11:56 AM.
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No new parts were fitted, just the brake bleeding done.
According to my service manual, to bleed the ABS sytem a "DRB scan tool" is required.
Anyone got one I can borrow?
Rob
According to my service manual, to bleed the ABS sytem a "DRB scan tool" is required.
Anyone got one I can borrow?
Rob
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Year: 1991
Model: Cherokee
Engine: 4.o
sometimes the "judder" is caused br a wheel speed sensor dropping out, this causes the abs to actuate , it is trying to release brake pressure to the wheel it thinks is locked.
Good luck!
P.S. you shouldn't really have to bleed the abs unit unless the system went empty(ie. blown brake line) usually bleeding the base brakes works.
Good luck!
P.S. you shouldn't really have to bleed the abs unit unless the system went empty(ie. blown brake line) usually bleeding the base brakes works.
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Problem solved.
At the same time as bleeding the brakes I fitted a rear locker. During the install I must have knocked a rear ABS sensor out of position. One of the rears had a obviously larger gap than the specs I've got (36-50 thou'). Using technical know-how and precison instruments (hammer and chisel), I adjusted the gap.
Took it for a spin and all's ok again. Thanks all.
Rob
At the same time as bleeding the brakes I fitted a rear locker. During the install I must have knocked a rear ABS sensor out of position. One of the rears had a obviously larger gap than the specs I've got (36-50 thou'). Using technical know-how and precison instruments (hammer and chisel), I adjusted the gap.
Took it for a spin and all's ok again. Thanks all.
Rob
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