I know that for a Hydraulic power steering system, turning the wheel to full lock is a no no, it wears out the pump fairly quickly and reduces the life of the steering rack.

So for a EPS, does the same apply? The processor for the EPS reduces current to the motor when it sees it's at full lock to prevent an overload but is it still applying enough to try to push it a little more? Do you think it'll wear more? I can't seem to find enough information. Found a decent amount of information about the nsx eps, but not enough about the s2k specific ones. I don't know if it's the same, but none answer my question about the full lock situation.

Digression: Anybody's EPS fail?
Does anybody's steering wheel make a groaning and a click when you turn it about 1/4 in either way from dead center?

 

It's not a problem to turn any steering gear to full lock, hydraulic, electrohydraulic, or fully electronic.

But no, your steering should not groan/click at 1/4 turn.

 

Turning a hydraulic ps wheel to full lock makes the pump work overtime and it's exerting max psi to the rack. If done consistently over time, it can cause problems like a blown hose and blown pump.

 

 

Well, obviously, but my point was that you can the wheel to full lock without damaging anything. Sure, if you tie a piece of rope from the steering wheel to the door handle, tighten it so the steering wheel is full lock, and let the car idle for 3 days, the hydraulic power assist will be under enormous stress and will likely give out, but simply turning it to full lock when maneuvering a tight parking spot does no damage whatsoever.

 

why is this even an issue? umm, if you need to make a really sharp turn then do it, but why would you have the wheel in against the lock for any extended period of time?

some of the questions you guys ask make me wonder if there's like some S2000 trivial pursuit game that everyone's studying for. too much useless knowledge.

 

On GM compass-equipped vehicles, to calibrate the compass you have to drive the vehicle in 2 full circles clockwise, at full lock and under 3mph, then in 2 full circles counter-clockwise, also at full lock and under 3mph. Perhaps if you own a late-model GM with a compass and feel the need to calibrate it every time you start the vehicle, this would be an issue.

 

Scrawny,

Your original question is a very valid (i.e. good) one. I'm actually wondering about this myself.

Maybe there will be a few comments of people that do know what they are talking about and hopefully they will be able to give some sensible and useful information.

Regards,


Siepel