ABS Motor Switch Install; Anyone tried it?

[N-Wing]

I search thread but didn't find anything. I'm considering wiring up a switch to manually initiate the ABS accumulator motor. Reason being of course, mine tends to go off and I want better control of when. Currently I tend to lock up the front brakes quickly before I go anywhere so I know the system is unlikely to run after re-starting from another location. I just find it embarassing to drive a car this nice with that motor blaring away. I've considered unplugging it on a number of occasions.

Has anyone ever done that? I'm thinking it would not be too hard, as I know Larry B. lit mine off with little trouble to ease my mind that the crazy sound was specifically identifiable.

Generally, my car does not run the pump in the summer but in any remotely cold times (I would guess under 45 deg) I would say there is a 50% chance it will go off after sitting for a long while and a 5% chance it will go off after sitting over and hour.

The ABS pump is definetly my least favorite piece of this car. Followed by that damn huge antenna (but I'll be remedying that with the Shark II this summer).

Any info would be appreciated.

Mike

 

[Larry Bastanza]

The motor has a timer/pressure sensor that will assure the motor will not overheat. Manual operation could become an issue, if it is either left on too long(overheat) or too short(not enough pressure the have the system function properly).

With that said, I am sure this is quite simple electrically, as you can add a switch to disconnect it. But this will cause you to get an ABS indicator if you have it off, and the system is under-pressurized. It will think there is a failure, and illuminate the indicator.

You may wish to consider the later system as an upgrade to really resolve your objection.

HTH,
LarryB

 

[drew]

The problem is not the ALB pump, that is a mere symptom.

Running the pump motor is also high current operation and to implement your plan you'll need very large wires and a big switch (or relays). You could also over-pressurize the system and cause yourself a lot of grief. Gets silly and expensive real quick.

The problem you need to solve is that you are losing pressure and the pump is trying to keep up. Solve this issue and your pump issue will go away.

Alternatively, you can jump the pressure switch and gracefully eliminate the whole problem of the ALB running. (If you search I have a DIY on this)

Drew

 

[N-Wing]

Thanks for the responses.

I hate that motor. I understand it's due to losing presure in the system. I'm not sure how I would go about getting that fixed or finding someone who could. Sounds like the switch may not be a good solution. I'll check on Drew's plan although I'm guessing that eliminates the ABS altogether. I'll look for it tonight.

Thanks,
Mike

 

[Briank]

See http://www.nsxprime.com/forums/showthread.php?t=98758

 

[OLDMNSX]

Mike,
I will also have to agree with LarryB and Drew, a switch is not going to fix your problems. It would be easy to do a manually operated switch in the pressure switch circuit, but like Drew said that is only masking the symptom of the root problem, leaking solenoids.

There is a chance that a good flush of the system may cure your problem for who knows how long, or it may persist. I was able to fix SENNAF1s car that the ABS had not been working for years. If it persists, I am going to be offering a complete tear down, flush and check of the entire ABS modulator, pump, accumulator and pressure switch assembly. Unfortunately I also have a full time and two part time jobs that I work, not all at the same time and only seasonally. I am also accumulating a few spare parts, i.e. modulators and pumps to help out guys like you, if they need a replacement part. I have been waiting on a friend of a friend that has promised to make me a set of blocks that will allow me to back flush the early (91-92) solenoids, and don't have them yet.

I would be willing to ship you my ABS tools if you have a small amount of mechanical ability and are willing to pay round trip shipping. I am coming to Washington D.C. the first part of April and am going to offer someone there to help them do the flush on their car, so the tools would be available after that. I get there on the 5th and return the 11th of April. How far are you from there?

Brad

 

[ScienceofSpeed]

It's probably not the answer you're looking for. However, if your modulator or accumulator is not generating or maintaining pressure (causing the pump to continuously cycle), you could always change them out to the new ABS system used by Honda. We sell it as a conversion kit. Here is some information:

http://www.nsxprime.com/forums/showthread.php?t=98878

Cheers,
-- Chris