If the rear brakes are drum brakes, then there could be a leaky wheel cylinder. The wetness inside the drum will cover all the brake shoes and parts and cause the wheel to lock up when applied. The build of pressure could be due to the wheel cylinder leaking and causing a pressure loss, but rising when the brakes are applied or pumped up. This may/may not be your case, but definitely worth checking the rears.
The brakes will remain on, air pressure is required to release the brakes
Check your brake power booster
Fuel pressure should read no less then 9 LBS. and no more then 13 LBS. And yes it should hold the pressure with key on, engine off.
same as a car, take the caliper off, and leave bleeder to the top, build pressure, hold, open bleeder, repeat.
We've changed the fuel pump, pressure regulator, gas cap, and had a tune up and the pressure is still building...What else can it be?
Drum brakes are cheaper to build.
The fuel pump surging at first could be caused by the fuel pressure bleeding off and the pump has to build the pressure up.
-choke the wheels, release the parking brakes. when you have enough air pressure to do it, and shut the engine off. -step on/off the brake pedal to reduce to airtank pressure -the parking knob should pop out when the air pressure falls to the manufacturers specification (usually 20-40 psi) THIS CAUSES THE SPRING BRAKES TO COM ON. To check for emergency operation of spring brake on straight truck: Release park brake. Build air pressure to 100 psi. & shut engine off. Drain primary air tank & step on brake foot pedal. You should hear air exhaust from brake chambers & rear brakes should apply. This will give you controlled spring brake application if you loose primary air pressure.
Chevy did not build a Malibu in 1995.
Chevy did not build Malibu in '94
Check the freeplay. If the linkage is too tight and there is no free travel in the pedal, the master cylinder may not be releasing, which allows pressure to build up and the brakes to apply. A good manual for this car should have the proper adjustment described.
Build up air, chock the wheels, release the brakes, and hammer on the brake drums.