Abs solenoid valve

[bartman1980]

Hi guys,
I’ve recently purchased a 1991 NSX auto ukdm. I’ve wanted one for years and finally found one that could afford. It’s in great condition and drives amazing. However the abs and tcs light come on. I’ve followed the procedure on here for a solenoid flush and repeated it until the fluid was clear. I can’t get one of the solenoids to flush. I’m presuming this must be what is causing the problem. My question is can they be replaced and if so where can I get one as they seem to be discontinued from Honda.
Is it worth fixing the original abs system or am I better off upgrading it. This car is a keeper so I want to make it the best it can be. Thank you for any advice

 

[drew]

This thread should cover it.

 

[bartman1980]

Post in thread 'ALB Accumulator'

24 March 2024

It is likely the pump, especially if the reservoir is not foaming.

The whole system can be difficult to diagnose without special tools that exceed the cost of a modern retrofit. I have the dealer SST ALB computer too; it doesn't help that the service manual states to replace the entire unit upon any fault.

I find the whole system to be mostly useless, to bypass it, and leave it for originality's sake.

The Legend KA5 ALB/ABS unit might have enough similar parts to rob for the NSX. I recommend canvassing the Legend boards to see if there are solutions. FYI, there are services that...

• drew

• 

the pump is working well and the other 3 solenoids are foaming and flushing nicely, just one of them wont flush it only clicks, so im presuming its blocked.

 

[drew]

I recommend reading through the entire thread. (Hard to post exactly what I want when on mobile)

I had salt blockages in the modulator body (the big chunk of machined aluminum) that were 100% and prevented any/all brake fluid from getting to the calipers. No amount of "exercising" was going to clear that.

I suspect your solenoid is just fine, but is blocked with salt. One can do a "quick and dirty" clean the internals without removing the entire modulator.