Speed Wobble - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

roomie · 17th August 2005, 02:57 PM

I've got a GTR33 V-spec and when i was on my way home last night on a dry,straight,smoothish road I got a few wobbles from the back-end.What's causing this,I've recently had the battery changed.

Mookistar · 17th August 2005, 03:20 PM

as i understand this is called "hicas Wobble"

can be problematic if the front wheels were not dead stright when you disconnected the battery

AFAIK

mook

kenan · 17th August 2005, 04:35 PM

Like Mookistar said.

I changed my battery and had the same problem. Dis-connect the battery and leave overnight, then make sure the wheels are straight and re-connect. If this don't work might be worth having the alignment checked.

On another not where in Somerset are you from???

Jay-Kay · 17th August 2005, 09:31 PM

Or ..Just lock the HICAS

roomie · 18th August 2005, 12:18 PM

Quote:

Originally Posted by kenan

Like Mookistar said.

I changed my battery and had the same problem. Dis-connect the battery and leave overnight, then make sure the wheels are straight and re-connect. If this don't work might be worth having the alignment checked.

On another not where in Somerset are you from???

Yeovil

COLONEL_SMITH · 18th August 2005, 02:05 PM

Have you got some bass in the boot???
Search on here as there have been many posts about it
More likely the cause,if the wheels were not straight when the batt got connected you would notice it all the time.

Cable · 2nd October 2005, 05:34 PM

Does the battery have to be disconnected for a long period such as overnight like Kenan suggested for it to work or can it be left for an hour so? Just asking as I'm pretty positive I'm getting the "Hicas wiggle" (I say wiggle because it doesn't seem as drastic a full on wobble) at highish speeds.

davew · 2nd October 2005, 06:57 PM

did you have your ICE playing at the time

the magnetic field of the speaker magnet will affect the hicas ecu at certain hertz

Cable · 2nd October 2005, 07:20 PM

It's done it with the stereo on and off so (standard stereo at that) I think I'd have to rule that one out. Where abouts is the Hicas control unit, inside the boot with the ECU?

NissanBoy · 2nd October 2005, 08:04 PM

yes, the Hicas control unit is in the boot, The engine ECU is in the N/S/F kickpanel.

Martin.

17th August 2005, 02:57 PM	#1 (permalink)
roomie GTR Register Member Join Date: Aug 2005 Location: Somerset Posts: 21	Speed Wobble I've got a GTR33 V-spec and when i was on my way home last night on a dry,straight,smoothish road I got a few wobbles from the back-end.What's causing this,I've recently had the battery changed.

17th August 2005, 03:20 PM	#2 (permalink)
Mookistar ADMINISTRATOR Join Date: Feb 2004 Location: Living life 8min 50 secs at a time Posts: 10,403	as i understand this is called "hicas Wobble" can be problematic if the front wheels were not dead stright when you disconnected the battery AFAIK mook __________________ FOR ALL GTR FORUM RELATED ISSUES CONTACT THE ADMIN TEAM 'MOOKISTAR' OR 'MOLEMAN' SKYLINE FAQ'S!

2nd October 2005, 05:34 PM	#7 (permalink)
Cable GTR Register Member Join Date: Sep 2005 Posts: 154	Does the battery have to be disconnected for a long period such as overnight like Kenan suggested for it to work or can it be left for an hour so? Just asking as I'm pretty positive I'm getting the "Hicas wiggle" (I say wiggle because it doesn't seem as drastic a full on wobble) at highish speeds. Last edited by Cable; 2nd October 2005 at 05:35 PM. Reason: grammar

2nd October 2005, 06:57 PM	#8 (permalink)
davew GTROC Member Join Date: Apr 2003 Location: Up North Posts: 2,618	did you have your ICE playing at the time the magnetic field of the speaker magnet will affect the hicas ecu at certain hertz __________________ The GTR Shop - Skyline GTR Breaker and Parts supplier. We buy your crash damaged, broken or mot failed car for cash. call now. For all your GTR needs. From 1/2 clips to turbos, seats to shells , harness's to engines. call Mobile 07731304953 GTR店 We ship worldwide.

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17th August 2005, 04:35 PM	#3 (permalink)
kenan GTROC Member Join Date: Apr 2003 Location: Exeter, Devon Posts: 1,900	Like Mookistar said. I changed my battery and had the same problem. Dis-connect the battery and leave overnight, then make sure the wheels are straight and re-connect. If this don't work might be worth having the alignment checked. On another not where in Somerset are you from???

17th August 2005, 09:31 PM	#4 (permalink)
Jay-Kay GTR Register Member Join Date: Nov 2004 Posts: 193	Or ..Just lock the HICAS

18th August 2005, 02:05 PM	#6 (permalink)
COLONEL_SMITH GTR Register Member Join Date: Mar 2002 Location: UK Posts: 498	Have you got some bass in the boot??? Search on here as there have been many posts about it More likely the cause,if the wheels were not straight when the batt got connected you would notice it all the time.

2nd October 2005, 07:20 PM	#9 (permalink)
Cable GTR Register Member Join Date: Sep 2005 Posts: 154	It's done it with the stereo on and off so (standard stereo at that) I think I'd have to rule that one out. Where abouts is the Hicas control unit, inside the boot with the ECU?

2nd October 2005, 08:04 PM	#10 (permalink)
NissanBoy GTR Register Member Join Date: Jul 2005 Location: NW London Posts: 179	yes, the Hicas control unit is in the boot, The engine ECU is in the N/S/F kickpanel. Martin.