ABS Pump crap out

[prelude48]

Hey guys,

2002 QX4, Every once and a while i will get in my truck and the ABS light will stay on and i can feel the pump buzz longer then it should. I can shut the truck off and restart and sometimes it will be fine and other times it won't go away even with 5 restarts.

Abs light will stay on sometimes because i don't care, but all of a sudden the 4WD light is coming on after about 1min weather driving or idling.

I flushed the brake fluid and it still came on with the first key turn, after a key cycle it would not come back on and neither while driving.

So my question is why the 4wd light all of a sudden?
Is the pump starting to crap out? or is there some other sensor that is making the pump do this? Im guessing the pump is designed to prime/pump for a second or two upon start up?

Thanks

[Towncivilian]

See this post for a possible fix for your constantly running ABS pump. I'm clueless regarding your 4WD light issue, though.