Right rear brake still overheating after complete fix with new caliper and brake line
2012 grand Cherokee unlimited, no “expert” can find the reason this driver side rear wheel is overheating. Everything new, and mechanics say all fixed, still overheats!
Experts are not experts.
Where else do we look for solution?
Experts are not experts.
Where else do we look for solution?
Member
Joined: Dec 2010
Posts: 114
Likes: 0
From: East Sussex, UK
Year: 2000
Model: Grand Cherokee
Engine: 4.0 Petrol
Possibly the flexible hose to the caliper has internal damage - what happens is that the internal rubber can form a one-way valve and retain fluid pressure in the brake line, keeping the caliper pistons in the 'ON' position and the pads in contact with the brake disc.
This does sometimes happen and is often overlooked as a cause.
This does sometimes happen and is often overlooked as a cause.
Possibly the flexible hose to the caliper has internal damage - what happens is that the internal rubber can form a one-way valve and retain fluid pressure in the brake line, keeping the caliper pistons in the 'ON' position and the pads in contact with the brake disc.
This does sometimes happen and is often overlooked as a cause.
This does sometimes happen and is often overlooked as a cause.
The flexible hose was completely replaced.
CF Veteran




Joined: Nov 2015
Posts: 2,863
Likes: 201
From: syracuse ny
Year: 1997 230,000 miles
Model: Grand Cherokee (ZJ)
Engine: 4.0, new lifters valve job with new springs and exhaust valves, preload set with shims
Like it or not it's the parking brake and or cable has rusted frozen. Check cable for operation very carefully specifically does it allow the shoe or pad to return to resting position after applied and released.
Could this be a recall issue?? In reading online, this is a frequent issue,,, no real solution.
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CF Veteran




Joined: Nov 2015
Posts: 2,863
Likes: 201
From: syracuse ny
Year: 1997 230,000 miles
Model: Grand Cherokee (ZJ)
Engine: 4.0, new lifters valve job with new springs and exhaust valves, preload set with shims
When you jack up the wheel, can you rotate it or is it locked? With a rear brake dragging, it is most likely the parking brake cable rusted. Might be adjustment also. Unless the pads have worn a notch in the spindles, ..that does happen too ..weld them up and grind them down. Otherwise I suggest finding a real mechanic. Brakes are not rocket science, more of an athletic event.
Old fart with a wrench
Joined: Nov 2010
Posts: 14,398
Likes: 741
From: Manlius, east of Syracuse, NY
Year: 2000 XJ Sport & WJ Laredo
Model: Grand Cherokee (WJ)
Engine: 4.0L
ROTFLMAO! Athletic event? Awesome! More like a Rorschach test! Can you see anything?
Last edited by dave1123; Aug 18, 2018 at 08:33 PM.
CF Veteran




Joined: Nov 2015
Posts: 2,863
Likes: 201
From: syracuse ny
Year: 1997 230,000 miles
Model: Grand Cherokee (ZJ)
Engine: 4.0, new lifters valve job with new springs and exhaust valves, preload set with shims
They are! I'ts push ups,. sit ups, kneel, squat, twist and turn turn and twist on your knees, up and down, repeat over and over
like mine it takes a second to release after stop on one side so that could be why ones hotter. or maybe a little air in line on side thats cooler making it not work right. or a bearing going bad would make it hotter or shock maybe or tire wear maybe.... just thought id try to help please keep us updated
CF Veteran




Joined: Nov 2015
Posts: 2,863
Likes: 201
From: syracuse ny
Year: 1997 230,000 miles
Model: Grand Cherokee (ZJ)
Engine: 4.0, new lifters valve job with new springs and exhaust valves, preload set with shims
like mine it takes a second to release after stop on one side so that could be why ones hotter. or maybe a little air in line on side thats cooler making it not work right. or a bearing going bad would make it hotter or shock maybe or tire wear maybe.... just thought id try to help please keep us updated
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