We trust our mechanics--they are good. They would be the first to admit that Hondas are not their favorite or speciality. They are having trouble with my daugher's 1994 Prelude. The brakes are getting air in them. I am not a mechanic so forgive my terminology but if I understood correctly they put in a new master cylinder, a new cap, bled both the ABS and main brake system. They drove her car for a week even and thought they had everything fixed but when my daugher drives it guess what--air gets in them. She has a tendency to use the brakes hard because I have been in the car with her. I think the mechanics have considered or did try to bypass the ABS system. Any other ideas for them?

 

hole in the brake line?

 

bad connection in a brake line/brake line leak(what he said)

 

I gotta set of stainless steel brake lines that I didn't use on my prelude.

Let me know

 

are you sure air is getting in the lines?

she could just be boiling the brake fluid

 

they shouldn't ever have to mess with the ABS system on normal brake work unless there is a problem with the ABS to start with . if theres air in the system they didn't bleed it right because if theres a place for the air to get in brake fluid would be shooting out it! as for honda brake systems except for the undersized rotors it's the same system used all cars since disc brakes were used . unless she's boiling the fluid. I would find a new mechanic to fix the brakes right and with OEM parts!

 

If she's boiling fluid, flush the brake system and step up you fluid to the maximum allowable. (5th Gen preludes can use DOT3 or DOT4) The higher the number after the DOT, the higher the boiling point. Don't exceed the manufacturer's recommendation located on the master cylinder cap, or else you could have problems.

 

except not.

i assume like all other honda's that the prelude cap will say DOT3 and list only DOT3

i personally would look to replace it with ATE super blue and see what happens

 

There's no way the fluid is boiling, unless she's racing or riding them down huge hills. There is a leak in the system, check all the hard line connections, and as many of the hard lines as you can, (some run through the car, but those shouldn't have any corrosion or bending issues), also it's a good idea to replace the flexible rubber lines and inspect the location where they connect to the hard line and the calipers, after 12 years they are bound to have cracks, this is the most likely reason the system is getting air in it. It is possible the lines have cracks small enough to let air in but not fluid out. A caliper with a bad seal could also be the problem. There is no reason to try and bypass the ABS system. The only other thing I can think of is something I did once that was pretty stupid, I didn't have the bleeder screwed back on tight enough and fluid was leaking out. Might be worth checking too

 

WRONG! Unless I have some kind of super brake system on my 99 Prelude, which I don't. It says "use only DOT3 or DOT4 brake fluid"
So try to not be such a douchebag......Learn your facts before try to sound all-knowing about Hondas.