94 del sol s 94 integra front brakes, del sol si rear disc. Steel braided lines, hawk pads.

I've bled it 3 times already in the correct order. doesn't seem to be any leaks anywhere either, even under the dash, and calipers. Fluid never needs refilling, and vacuum line is new.

Not sure how to diagnose the problem because I can never duplicate it.

Problem: Sometime when stopped at a light or sign the pedal will sink, more noticable on hills, but it happens randomly (maybe every other week). I have taken people on drives explaining what's happening and of course it never happens. When it sinks on a hill the car does roll, and I push harder and it stops. On level ground I just let go of pedal and press again and it's fine.

Any help would be appreciated.
Thanks

 

when a brake master cylinder begins to go bad or fails, you will notice a soft or squishy feeling when you press down on the brake pedal. when constant pressure is maintained on the brake pedal (like when you keep your foot on it at a stop light), the brake pedal will begin to sink to the floor as the brake fluid leaks internally in the master cylinder. this is called "extended travel" when the brake pedal goes farther down than normal or than it was intended to. when this occurs you will have to "pump" the brake pedal to regain normal pressure and to keep the car from moving forward because the brakes are slowly releasing

if you're using the 94 del sol S stock master cylinder, you'll need to upgrade your m/c to match your 94 integra front brakes.

swap out your stock master cylinder for a 15/16" m/c from a 90-91 civic ex 4-door

it's a straight bolt-on, the brake hardlines bolt right up, no bending or reflaring lines.

the bigger 90-91 civic ex 15/16" m/c works well with integra front calipers

honda oem part # 46100-SH4-A11

peep the link below to b18c5-eh2's thread,

"Easiest Brake Master Cylinder Upgrade Yet for 1992-1995 Civics..."

https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/easiest-brake-master-cylinder-upgrade-yet-1992-1995-civics-364783/

 

hey roastbee im having the same problem wit my 95 gsr..i sent you a pm

 

Thanks, I'll have to go look for those parts now.