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Your flexible brake hose is collapsed inside. When you apply the brakes, the pressure gets through, but the collapsed portion of the hose won't let the pressure back out and it locks up the caliper. Depending on how bad the hose is collapsed inside, the pressure may release after sitting for a while. The hose may look good on the outside, but that is just a protective barrier for the inside hose. Replacing the hose should solve your problem.
To remove a stubborn clamp on a collapsed PCV hose on a 2000 Ford Focus ZTS, cut the hose lengthwise, being careful to get part of the cut under the clamp. Then replace with a new hose and clamp.
it means it is time to get a new one
A PVC valve is typically bad in a car if a car has an oil leak. Other signs of a bad valve include a collapsed hose and a sludge-like buildup.
This one's a no-brainer. Go to Auto Zone, et al, and purchase the hose, look at the other one, remove and replace.
Either the caliper piston is frozen stuck or the hydraulic brake hose has collapsed internally. Open the bleeder on that caliper and see if the pressure releases, if it does you have a bad brake hose.
It could be because of a bad thermastat, a clogged hose, maybe a collapsed hose, you could also try cleaning the radiator. Or it could possibly be the radiator itself.
stuck thermostat or a air bubble in the system. Or the lower radiator hose is plugged or collapsed.
thermostat, electric fan, clogged system, head gasket problems? collapsed hose, low coolent.
Could be a collapsed lower radiator hose, perhaps a bad thermostat.
You may have a collapsed brake hose or a pinched brake line.
We need to know which war. There was more than one.