Hicas/steering Problem

[jimako87]

hey guys,

im not exactly sure what has been done to the car before i bought it, but i was told the HICAS had been removed, (lock bar or just completly gone, i have no idea)

but now this little problem has started where my steering is reasonably straight untill i hit approx 80km/h and then i have to turn my wheel atleast 20degrees clockwise to keep the car straight

during the 70-80km/h range theres a deep sound coming from the rear tyres

any ideas???

[QWK32]

stick you head under the back of the car and have a look to see if you actually have a lock bar installed. it will be just behind the diff.

[bubba]

Sounds like what my car used to do before I removed teh dodgy HICAS, minus the noise though.

[jimako87]

stick you head under the back of the car and have a look to see if you actually have a lock bar installed. it will be just behind the diff.

i have no idea what the lock bar would look like, im not really experienced with this stuff, all i know is what i explained.

if i do have a lock bar, would u know what the prob is, or vice versa??

[jimako87]

Sounds like what my car used to do before I removed teh dodgy HICAS, minus the noise though.

you removed or lock bar?? if removed how did u go about it??

[NeboRdChick]

Sorry to hijack your thread, but for those who know.. if your odometer doesn't work.. does it affect your hicas? I have the light come on and the steering gets really hard every now n then, its tempermental..

[bubba]

James: I removed via a lockbar.. if you remove the steering rack you need to put something in its' place to hold the tierods (things that adjust toe and/or are used for steering) or the back wheels would flop about a hell of a lot

You can get lock kits such as the tomei one which retain the steering rack but use an arrangement of washers to lock the tierods in place.

Karina: Yes it will affect HICAS and the speed sensitive steering. When the little needle on the end of my speedo cable snapped and I thus had no speedo, I had to drive around with heavy steering until I put a new cable in when I installed my new dash.

I now have a lockbar in the back, no HICAS solenoid thing in the engine bay, removed all the lines. Have also got a 25 box and a 280kmh speedo, I get the HICAS light on the dash after 1-2mins of driving but my speed sensitive steering is still there.. I believe if you unplug the HICAS ecu in the boot you will lose the speedo sensitive steering..

Edit: oops just realised you said "odometer", does this mean the speedo still works but the odo doesn't??

Edited May 1, 2008 by bubba

[ZENNON]

jump under back and take a picture

(sounds like dodgy hicas)

[ZENNON]

this is what your looking for

[ZENNON]

ps salad did a DYI thread which has pics too:

http://www.nissansilvia.com/forums/index.p...howtopic=185697

[dmr]

hey guys,

im not exactly sure what has been done to the car before i bought it, but i was told the HICAS had been removed, (lock bar or just completly gone, i have no idea)

but now this little problem has started where my steering is reasonably straight untill i hit approx 80km/h and then i have to turn my wheel atleast 20degrees clockwise to keep the car straight

during the 70-80km/h range theres a deep sound coming from the rear tyres

any ideas???

hey there,

my friend and i both had this same exact problem. his was while he had hicas and mine was after i removed hicas.

the cause is air in your power steering lines.

you may have a leak which is causing air to get in, but chances are slim since the system is high pressure and you would see oil everywhere or your hicas light would stay on in your cluster. give it a couple days of driving and using the steering wheel, and it should bleed itself out. otherwise, open the power steering cylinder cap in your engine bay and turn the wheels side to side for about 10 mins. if all else fails, flush the system and start over.

hope that helps,

dave.

[NeboRdChick]

Karina: Yes it will affect HICAS and the speed sensitive steering. When the little needle on the end of my speedo cable snapped and I thus had no speedo, I had to drive around with heavy steering until I put a new cable in when I installed my new dash.

I now have a lockbar in the back, no HICAS solenoid thing in the engine bay, removed all the lines. Have also got a 25 box and a 280kmh speedo, I get the HICAS light on the dash after 1-2mins of driving but my speed sensitive steering is still there.. I believe if you unplug the HICAS ecu in the boot you will lose the speedo sensitive steering..

Edit: oops just realised you said "odometer", does this mean the speedo still works but the odo doesn't??

I pushed the trip reset button one day and it just stopped working. Steering got heavy from then on and the hicas light starting coming on more often. Speedo works fine.

[dmr]

I believe if you unplug the HICAS ecu in the boot you will lose the speedo sensitive steering..

if you unplug the hicas harness, the steering will stay stiff. you have to snip the green wire with the white trace line on the bigger harness to disconnect hicas without damaging anything.

[heller44]

I cannot see how snipping a wire will get rid of the 'stiff' steering as it is the hicas module that provides the pwm signal to the power steering modulation solenoid?