Chrysler Repair: brakes, wheel cylinder, brake hose

Question
low soft pedal,changed wheel cylinder,brake hose,
master cylinder,bleedbrakes,pedal still low and
soft brakelight comes back on in a day,also took it to a garage he tighted fittings a bleed brakes
pedal still feels low brake light on in a day.
Any suggestions would be helpful.

Answer
Hi David,
Did you do the work or a shop? Are you losing brake fluid from the master cylinder reservoirs? Did you just replace one wheel cylinder and if so which one and why? Did you just replace one brake hose or several? Did you check all the brake units at the four wheels for leakage?
Did you bleed the master cylinder or did the shop, if they did the work?
There is a test that may also help:
With the engine running, step on the brake lightly and gradually increase the pressure very slowly, gradually increase pressure while watching the warning light, and keep increasing pressure to include both feet pushing on pedal for 30 seconds. Then release pedal very slowly.
Note when (at what level of pressure)/if warning light comes on during this process; and note whether pedal moves slowly all the way to the floor. Does the light stay on when the pedal is slowly released, or not?
Let me know the results and answers to these questions.
Roland