How to check the ABS pump

[yogi_pahl]

My on going brake proplem is starting to get under my skin.The petal feals to stoft to me. I check everthing i can think of and nothing so far. Today i check all the fuses and they wear all good. I had a thought and just unhooked the wires on the abs pump block and took it for a short drive. the ABS light cam on and my speedo didnt work. My brakes felt just the same as if it was hooked up. I want to know is thear a way to jump a realy or something to see if i can get it to kick on. Also what realy does it run off of.

 

[AMMO_HOOAH]

Your ABS isn't going to have anything to do with your soft pedle feel. That's related to air in the system, or expanding brake lines or something along those lines. Stop messing with your ABS system.

 

[yogi_pahl]

Lines are fine. Bleed the brakes 2 times myself, the had a frined that works at a shop do it. master cylinder and booster are both find so are pads and routers. Just trying to see if its a bad realy or something.

 

[AMMO_HOOAH]

By lines being fine I'm assuming you're referring to their appearance. Rubber lines expand when you push the pedal, the older they get the more they expand which can cause a soft feel. Just because they look good doesn't mean they are. Also just so you know the Xs tend to have a soft pedal anyway.

 

[yogi_pahl]

I looked at them when i bleed the brakes.Had a friend pump them up and hold pressur to them. They did expand but just a lil bit. Soft yes but not like this my frined has one same year engine and evey thing like mine and his is a lot stiffer. Mine feel like i got a blown M/C but had it check out and it was fine. See, like the only thing i havent checked is stuff with the ABS system.

 

[budwich]

I am not sure where the "Your ABS isn't going to have anything to do with your soft pedle feel" comes from on an ABS system but sure it can... how do you think the fluid moves thru the brake system.... whether your ABS is activated or not, it still is "involved" in the fluid flow.

Yogi, I think you posted this for while.... did you get an ABS "bleed" or not. If you didn't, get one done.

 

[yogi_pahl]

Ya i had it bleed with the scan tool thing at a brake shop. May be soft pedal is the wrong word but but just soft brakes kinda like my M/C is gone. I have brakes but only about the last inch or so with the engine on. with it off i can build and keep the pressure up.

 

[budwich]

OK.... that helps... but it appears that it hasn't solved your problem. There are other tests for a "soft" brake problem. In park with the engine running, try tapping the brake a few times (3-4), wait for a bit then push down on your brakes til they are firm... until you feel like they have bottomed / "hardened".... then increase your idle to 2000 rpm, then release the gas, if your pedal moves further down (ie. you can feel your pedal drop a bit), then that's good, if not, then you may have a vacuum booster problem / leak. The other thing to check is to ensure the vent holes on your fluid reserve cap are open.