Terrible ABS pump noice

[winreboot]

I don't know what it is. My ABS pump once a while turns on by it self in normal city driving. I understand that when the pressure becomes low it will turn on and readjust it by pumping fluid but the noise is like a fan would be hitting metal or like a metal scraping against something. Grrrzzzuuu

I test all the solenoids by giving them - and + from battery all work fine and they send fluid fine. Also when I brake hard ABS works and it does not spit any error codes to ECU.

My question is: is this noise normal or my ABS pump is busted ?? Maybe new ABS pump is very quite ??

Thx,

 

[ScienceofSpeed]

Have you bled the ABS?

-- Chris

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[winreboot]

Yes, I did what is on the DIY http://www.danoland.com/nsxgarage/brakes/abs/abs.htm (EXCELLENT PAGE !!)

Just the noise that concerns me. What is a regular ABS pump sound??

Thanks,

 

[DutchBlackNsx]

The same as you describe.........

It's not a very nice sound, check under troubleshooting (in the faq) for 'whats that noise' (i think, damn, where's that faq nazi!!!!!).

Dutchy

 

[ScienceofSpeed]

The NSX ABS pump is fairly loud. Every NSX I know does this. As long as it is once in awhile, I don't think it is a problem. More often may be air, pump failing, or sticky solenoids. The sound, in my limited experience, is pretty much the same though across the board.

-- Chris

------------------

www.ScienceofSpeed.com - Click for more info
www.NSXClassifieds.com - The internet's only exclusive NSX Classified site!

 

[Joe Gliksman]

I had the same noise--about once a year. I also had solenoid stick and pump runs for 2 minutes and cuts off as designed. Great mechanic at ACUNDA of Tampa told me how to fix it. Turn off car--restart and after a few seconds pump will start again--find a puddle or loose sand and nail brakes--solenoid will often right itself--mine did.
Acunda is a good place to take your NSX.