if you mean the pedal isn't as stiff as it was, you still have air in the lines and you have to bleed them again, most cars have certin order you have to bleed them in most times it is the RR, LR, RF, LF. any parts shop can tell you. 2 you might have the adjustment on the drum loose. after you adjust them you should hear the pad pushing on the drum as you turn it, but not so tight you have to fight to get it off.
If the brakes are disc brakes then try opening the bleed screws on the calipers and see if the pressure releases if not then remove the calipers and replace because the piston is probably frozen or you can try pushing in the piston with a c-clamp,if that doesnt work replace the calipers as noted. If the brakes are drum brakes then check your brake cylinders to see if they are leaking if so you can usually rebuild them if not then replace them and bleed your brake system to get brakes back to normal, you can also make sure your drum brakes are adjusted correctly.
This will greatly depend on what kind of brakes you have and which parts you are trying to replace. Do you have disc or drum brakes? If you have disc brakes, do you want to replace the calipers, pads, or rotors? If you have drum brakes, do you want to replace the drum, or the shoes?
not lubricating your slide pins when you replace your brakes
no. if you want to upgrade your brakes from a different car then use the Eclipse GSX brakes, or a 3000GT brakes. but you have to replace both the rotors and the calipers.
replace calipers in pairs. replace brake hoses at the same time.
Disc brakes are supposed to drag on the rotors, if you think they are too tight you will have to replace the calipers. The caliper slides may need cleaning and new hardware to allow the calipers to move freely.
no
jack up the tire and then remove the bolts that is holding the calipers and then remove the hose and the calipers will come off. you will need to bleed the brakes when you replace everything back together.
If pads are bad you have to replace it, but it sounds like you have problems with calipers. Either you have to clean calipers or replace it. Check break fluid level. Check the breaking system, you might have some air in there.
Sticking brake calipers. This can be caused by moisture in the brake fluid which will cause the calipers to rust. Replace the calibers and replace all the brake fluid. It can also be caused by driving with your foot on the brake.
calipers
It's the brake calipers. Probably around $400 to replace in a shop.