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Car Unstable Especially At High Speeds

Thelen
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Thelen Rising Star

Thelen

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Yea its definitely still a problem, sometimes the wheel is perfectly still, yet the car feels like a puck on an air-board and just gliding along with my not having any say. Last night going along at only 70kmh the car definitely wanted to go right, I had to seriously turn left and then back to center to get it right :/

GTSBoy Grand Master

GTSBoy

Posted
Posted

OK, so .... what steering wheel do you have on it? More importantly, is it HICAS compatible?

Have you tried to start a HICAS diagnostic? (google it).

Do you know anyone (mechanic) with a proper scan tool that can report on all the computers in the car? My mechanic has one that reports the computers in the car as being Engine, Trans and Steering (trans because R34 auto ECU has trans module in it - even though I'm using it manual) and my HICAS computer is still present but only partially connected (and completely disabled mechanically). That scan tool reports available fault codes for those computers. Worth a look. You can't always start a HICAS diagnostic to find out if your steering sensor isn't working (for example) because you need the steering sensor (and others) to be working in order to get a diagnostic running!! So scan tools can be a lifesaver.

cheers

Manuel Kasko Grand Master

Manuel Kasko

Posted
Posted

Glad I found this topic because my car is becoming increasingly deadly on the road.

Going to be looking at delete or lock as soon as I get some cash.

Would you suggest a delete rather then just the lock bar?

or can a lock bar still bring it stable.

I jacked my car up and you can actually move my wheel because my hicas is so loose..

GTSBoy Grand Master

GTSBoy

Posted
Posted

Don't know on R33s. I put a whole non-HICAS rear subframe from a Cefiro into my R32 and pulled out all the HICAS stuff completely (of which there is a lot more in an R32, being hydraulic).

It's also closer to being legal, as HICAS lock bars are considered a modification to the steering system, which is generally a no-no and an engineering exercise at best.

If I were not to have done the whole subframe, I definitely would have bought one of the more serious delete thingos that replaces the HICAS tie rods with arms with bushes on the end.

Thelen Rising Star

Thelen

Posted
  • Author
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Standard GTR wheel from what I can tell. It is possible some sensor is broken or stuck, as for diagnostics I don't think they checked that thoroughly as the loose camber nut was found. But yea I might ask them to do that, I'm sure they have the tools.

  • 2 weeks later...
ima_slap_joO Collaborator

ima_slap_joO

Posted
Posted (edited)

These symptoms (or at least the one posted above this post) are usually caused by the steering angle sensor....and more particularly by not having a boss that drives the steering angle sensor.

I thought the same thing but the original steering wheel and boss were in place, I don't believe they had been tampered with, it was intermittent and there was no way to guess when it would happen, either way, all gone, all good.

OP, if you can, just get the system removed and a lock bar installed asap, at least the car will be safe to drive, I know how dangerous it feels, good luck!

Edited by ima_slap_joO

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