Revs Jumping When Turning Steering Wheel

[LOC033]

Hi just bought my first skyline it's a n/a r33 I have noticed a couple of small faults but one thing that seems to be odd and bugging me is when I go to warm the car up and I turn the steering wheel the revs seem to jump abit not by much maybe 200-300 rpms not sure what seems to be the problem doesn't affect the driving really but just curious to know what seems to be the cause . I'm also curious about the 2 lights I have on my dash one says "SLIP" and the other "4WD" I have seen other r33s with this but not sure what they mean or when the light actually comes on . Anyone know anything about these things and could let me know ? Thanks

[jhjones]

The revs jump when you turn the wheel because the power steering runs off the engine and the engine revs itself the stop it stalling. Same goes for air-con.

I'm guessing "SLIP" means loss of traction? "4WD" means 4 Wheel Drive. You must have a GTS4.

Edited August 15, 2011 by H4x

[koduRB25det]

^^^1+++

[LOC033]

Oh ok so the gts4 is more 4wd ? I thought gts4 was 4 wheel steering ?

[defari]

give the aac valve a clean (there is a diy tutorial some where on this forum) it can help with the revs jumping.. Mine used to do it - cleaned the valve - it still does it but only slightly..

[LOC033]

Thanks for that mate will have a look around the forum

[Vera]

slip light means the rear wheels are loosing/lost traction, and when it stays on it means the front wheels are pulling the car. 4wd light means there is something wrong with the 4wd system, from my understanding

[LOC033]

slip light means the rear wheels are loosing/lost traction, and when it stays on it means the front wheels are pulling the car. 4wd light means there is something wrong with the 4wd system, from my understanding

I believe your right about the 4wd light cause I removed the 4wd relay from the boot and the light turned on and stayed on . So does that mean the gts4 are only 4wd when the rear wheels lose traction ? Do you also know anything about it being 4 wheel steering ?

Cheers

[defari]

if no hicas then no 4 wheel steering

[LOC033]

if no hicas then no 4 wheel steering

Yes I do see hicas in the relay box , so from what you read is it safe to say I have a GTS4 ?

Just for future reference what is it that makes a gts4 ? Is it the 4wd ? Or the 4ws ? Or both ? =/

And my final question is does anyone Have any information about the LSD, it's an import too if that helps ? Cause there is a relay saying 4wd LSD is it safe to take this out and drive ? Will it even make it rwd ?

[kawasakirider]

The revving up whilst turning is normal, as explained above. But the thing is, to hear it or for the engine to do that whilst turning, you must be stationary. You should never turn the wheel of a car while it isn't moving, if you're an OK driver, there's no need to. It puts undue stress on the steering components, specifically the PS pump.

[defari]

Yes I do see hicas in the relay box , so from what you read is it safe to say I have a GTS4 ?

Just for future reference what is it that makes a gts4 ? Is it the 4wd ? Or the 4ws ? Or both ? =/

And my final question is does anyone Have any information about the LSD, it's an import too if that helps ? Cause there is a relay saying 4wd LSD is it safe to take this out and drive ? Will it even make it rwd ?

from what i can remember most came fitted with hicas (there should be a light on your dash, a big metallic unit sitting in front of the rear diff)

as far i as i can remember the gts4 was awd (based on the whole gtr attessa system) 4 wheel steering (hicas / super hicas in some cars) is just a factory option although most came fitted anyway.

& the lsd transfers power to the wheel(s) that aren't gripping when there is a loss of traction... in retrospect - drifters lock their diff so its the same amount of power to both wheels irrespective of traction - thus makes it easier to keep the rears spinning when drifting / linking corners..

[Dingus]

GTS4 comes with ATTESSA AWD out of the GT-R; all GTS4 have the AWD, otherwise it'd just be a GTS.

Most Skylines have HICAS (4 Wheel Steer), pretty sure was standard on all but the most povo-spec ones.

[Yo-Yo]

the revs seem to jump abit not by much maybe 200-300 rpms

If it's sort of jumping from idle by 2-300rpm when you lock the wheel either side, as others have said it's nothing to worry about, but have a look under your car & check the condition of the usual suspension stuff like end links, ball joints & rubber cv boots etc

[PM-R33]

How did you buy a Skyline without knowing what you bought? You bought a GTS4. It is AWD. Has nothing to do with HICAS.

[central coast person]

All cars with belt driven power steering have a power steering pressure switch with sends a message to a AAC valve which idles the engine up to stop it from stalling with the load created on the crankshaft.

Your car is a GTS-4 simply look in your engine bay at the fire wall and if the engraving is ENR33 (6 numbers) then thats a GTS-4. Slip light is simply loss of traction, the system is RWD and depending on how much slip the computer reads from a lot of sensors about 100 times a second it will send power to the wheels anywhere from 0-50% to the front.

All GTS-4's that are R33 and R34 NEVER came with HICAS (4 wheel steer) from Nissan because they are non-turbos and with the 4WD parts in the car making excess weight they did not follow in fitting it. The GTS comes with it because its RWD and 60kg lighter. I wouldnt worry about HICAS though, everyone sees the light sooner or later and just locks the 4 wheel steer.

[defari]

+1 for no hicas

[mystery_kid]

i was about to say the same thing pm-r33

you obviously didn't do much reading or even speak to the person you bought it off if you didn't know the skyline you bought is awd