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bypassing the steering pressure switch?

6222 Views 7 Replies 4 Participants Last post by  vigman
has anybody ever had this DUMB idea =P

I know it could be a road hazard at high speeds by giving too much assistance, but having all of this extra crap is what makes cars safer to drive but more prone to failures.

I was thinking of old fashioned cars that did have power steering, but didn't have an assistance regulating switch.

anybody cares to share some light =)
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What I've read the steering pressure switch sends signals to the pcm when the hydraulic pressure get to high and the pcm than increases the rpms to avoid stalling the engine. High speeds it will turn off the electric assist if there is a hydraulic failure.
are you sure thats not for the 91+? They have a different rack entirely vs the 90. The 90s share the same rack design as the early (89-91?) S13s.
hmm... for sure my baby doesn't have all that much intelligence =P

but for what I know, the pressure switch is volt controlled to minimize the assist at speed.

I just want to know if the higher rpms on the pump won't send the end seals flying against the tie rods =P

I know she'll be quite nimble at high speed either way, but I want to know if this is mechanically "safe" for the rack to do.
I have no idea. If i'm understanding this correctly, Proper function of this switch is to at lower speeds it runs more % of the fluid through the rack, and the faster the mph the more this switch bypasses the rack and sends fluid back to the reservoir? If thats the case, I dont see why running full pressure all the time is bad, as the seals see full pressure at some point anyway. And I dont think the higher RPM generates extra pressure per say, I wanna say the PS pump is only capable of making so much pressure after X RPM you know?
I hear you... and I'm sold... I'll be putting her together as is...

I'll let you guys know if I find any problems
I believe the pressure on the system would be at it max when at a stand still and the wheels are turned to far one way ( screech noise). Then the pressure switch sends the pmc signal to increase rpms.
I believe that is correct alwzpkn....

That's the way it works on NON Nissan stuff....it's a low speed ( read parallel parking ) dealio...

Mine was broke.. and it was NOT FUN to make parking corrections.. but I fixed the switch and now it's a breeze to parallel park.

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