Thanks for replies
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We replaced master cylinder as it did have very similar symptoms as a bad master cylinder. But, issue was same with new master cylinder - pretty sure the new master cylinder was a dorman. When we replaced the master cylinder - did not notice any leaks at the back. I'm not sure about rubber flex hose - I get pretty good flow at all wheels when bleeding. It was raining here last night - took out car and did about 10 panic stops from decent speed and wheels locked up and I did skid. I'm sure that would activate the abs - but I can not really feel the pedal modulating under my foot - though i thought I could here the abs motor. I came back to house and rebleed the system - with car running and using my har freight bleeder. The car did seem a little better - though I'm not sure how much improvement. My 78 TA - i just touch pedal and get great stopping - same with my 98 TA. The civic seems to travel an inch or 2 before any action and then a bit spongy and then when nearer the floor stops. If I really stand on the brake pedal - it will stop and lock up. It seems to have all the symptoms of air in the brake system. But, I'm 99% sure I have gotten all air out of the brake lines, calipers, wheel cylinders, master cylinder. Only thing I can think of , is that there is air in abs module.
When I see guys bleeding abs online - it seems like they open a brake bleeder valve (bleeder valve goes to hose with container of brake fluid), say they open rear right (RR) bleeder valve and then use their bidirectional scanner and get abs to activate RR solenoid. Then, they proceed and do each bleeder valve in same manner
open RL bleeder - use bidirectional scanner and get abs to activate RL solenoid
open FR bleeder - use bidirectional scanner and get abs to activate FR solenoid
open FL bleeder - use bidirectional scanner and get abs to activate FL solenoid
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I checked and I can see a bidirectional scanner (like Autel Scanner MaxiCOM MK808) that could activate abs would go for around 500-700?? I work on cars a fair amount. I probably should get bidirectional scanner , i think is almost an essential tool for working on newer cars. I likely need to see my mechanic and see what he says.