P.s return hose from 1990 honda accord?

if the caliper is ok it sounds like the flexiable hose is restrcted by the metal crimps on the hose corroded and crushing the reinforced rubber hose restricting the fluid returning back in to the system. change the hose

as you are loosing steering fluid theers a good chance thats what the leak is

Short of jacking up the wheel and putting a new car underneath, you've just about covered all the possibilities. But I wonder, perhaps in your attempts to solve this, if you have inadvertantly introduced another fault? As you know, the brake master cylinder on a disc braked vehicle has no static valve. If there were to be a static valve in the master cylinder, the brakes would lock on after a few pumps. But this would affect both front wheels. There could also be a collapsed section in one of the flexible hoses which would let fluid through for bleeding but not allow the fluid to return. this would hold the brake on too. When you had the cliper off, did the rotor trun freely?

the radiator core is corroded ,just renew the radiator ,putting leak sealers in will only prolong the agony .

Your problem look like if there is still some air in the calipper cylinder.
I suggest you loosen the brake hose at the calliper and completely retract the piston.
Then thighen back the hose and perform a normal bleeding procedure of the front brake lines.
Spider guy

probably your lower rad hose. shine a flashlight around underneath and see if you see it reflecting off of a liquid trail, that will tell you where the leak is coming from. you can also get leak tracer to add to your coolant that will leave a more visible sign.

Check the fluid level in the clutch master cylinder reservoir - it is probably low. You will probably have to bleed the system (similar to bleeding brakes), the bleeder screw is on the slave cylinder on the front side of the transmission. If the level is low, you should also check for leaks in the system while you're at it. Leaks from the master cylinder show up on the inside of the firewall and floor below where the push rod comes through the firewall. Leaks from the slave cylinder should be fairly obvious on the flexible boot.

Your accord has a hydraulic clutch system. The reason you pedal isn't coming back up is it is low on fluid. You will need to add DOT3 Brake fluid to the brake reservoir, or the clutch reservoir if there is one. sometimes manufacturers use the brake reservoir to do both. The clutch resirvoir is right next to the brake reservoir and is smaller. you may need to bleed the system after topping off. Thanks, and don't forget to vote

Horn fuse should be located in the fuse box under the dash on drivers side kick panel. If fuse is good try replacing the horn itself, it might be bad due to the age of the car. They are located behind the front bumper on the left and right side.

yes my cv axles had to be replace cause of the same thing but when you replace one side you need to do the other side at the same time cause when 1 goes bad the other is not that far behind . i know from experience