Brake pressure loss - Honda Prelude Forum

leakyfaucet · 01-14-2010, 10:27 PM

Hello, I'm trying to fix a lady friend of mine's 94 prelude SI with ABS. She has a problem where the brake pedal slowly falls to the floor, indicating a pressure loss. There is also a slow loss of fluid. Are there any common places for leaks to develop? Also, her ABS light came on recently. Is there any kind of ABS failure that would be associated with a leak?

Thanks!!

jkoni426 · 01-15-2010, 06:42 AM

i had my abs light on, and was told i had a leak in the abs modulator. it was $1000 to replace so i just added brake fluid every once in awhile to keep it full and that solved it. no more abs light.

G_Loc · 01-15-2010, 06:43 AM

Brake pedal slowly creeping to the floor indicates a bad master cylinder. Pretty easy to replace and they cost about $100 or so. As for the ABS light, pull the code and come back with that info

leakyfaucet · 01-15-2010, 08:40 AM

OK thanks guys, I'll take a look at it. Can the ABS code be pulled by any cheap autozone-type OBD code scanner?

jkoni426 · 01-15-2010, 08:44 AM

i would just jump the connector with a paperclip and count the flashes on ur dash

minilogoguy18 · 01-15-2010, 08:55 AM

OBD scanners are nice but there really isn't a reason to spend the money on one, here this should help you out...

http://img704.imageshack.us/img704/2533/abs1.png
http://img704.imageshack.us/img704/265/abs2.png

edludesi · 01-15-2010, 11:45 AM

Quote:

Originally Posted by G_Loc

Brake pedal slowly creeping to the floor indicates a bad master cylinder. Pretty easy to replace and they cost about $100 or so. As for the ABS light, pull the code and come back with that info

yeah my brakes were like that for a while, i had my car parked for 3 weeks till i got the master cylinder ($75) n changed it now i have no brake problems, only my check engine light went on idk why it was on b4 but it went off by it self

good luck hopefully its only the MC

BronxBB4 · 06-28-2010, 08:15 PM

How do you use the paperclip to get the codes. I have to pump the brakes when im driving and its getting me pissed.

petern101 · 06-28-2010, 08:49 PM

well you won't throw a code if your bmc is out.