Ayc problem?

[mills_88]

Nah the fuses are good, hopefully i was looking at the right ones.

 

[bradc]

Do the lights still come on when you start the car?

 

[Guest]

Don't mean to hijack (well..actually I do ). I have the opposite problem. Since My wheel-alignment (fitted 4 new wheels), my AYC lights are very active - when driving straight along the freeway, sometimes i have 1 bar on the whole time. Also, there is a low-midrange whirring noise at about 50km/h (probably there all the time, but gets cancelled out by the exhaust).

I've struggled to find wheel-alignment specs for this car. I'm sure my issue is related to this. Anyone in Sydney recommend a shop to take it to to get this fixed up? Do Meek do this stuff?

Any information / experience would be most helpful.

As for no lights coming on, do you get the correct diagnostic sequence of lights when your car comes on? ie, Red AYC light goes out after a few seconds at the right time?

 

[Kitty's VR4]

As for no lights coming on, do you get the correct diagnostic sequence of lights when your car comes on? ie, Red AYC light goes out after a few seconds at the right time?

RED AYC LIGHTS on startup????? it should be 3x Green Bars, not Red.
The 3 Green Bars should stay on for a second or 2, then go out.

Something is amiss here....................... Probably start with a ECU reboot, then see if this clears it up, If you are still getting RED AYC Lights, there is a problem that needs investigating

 

[Guest]

Red AYC light in the bottom right hand corner of the dash, in addition to the 3 Green AYC bars.

Ie, like this: http://www.youtube.com/watch?v=wHOXQTVF9_0

RED AYC indicator goes out after a second.

 

[Kitty's VR4]

Arghh OK, thats fine.

I'll see what I can find about wheel alignment specs - camber/caster and post this up when found....

 

[Kitty's VR4]

Wheel Alignment Specifications


VR4 Front Suspension Alignment Specifications

Toe In = 0mm ± 3mm

Camber = 0°00' ± 30' (difference left to right to be within 30')

Caster = 4°20' ± 1'-30' (difference left to right to be within 30')

Side Slip = ± 0mm-3mm

Upper Ball Joint rotary starting torque = 0.3Nm - 1.5Nm

Compression Lower Arm Ball Joint rotary starting torque = 0.5Nm - 2.5Nm

Lateral Lower Arm Ball Joint rotary starting torque = Below 1.5Nm

Stabilizer Link Ball Joint rotary starting torque = 0.5Nm - 1.5Nm



VR4 Rear Suspension Alignment Specifications

Toe In = 3mm ± 3mm

Camber = 1°00' ± 30' (difference left to right to be within 30')

Trust Angular = 0°00' to ± 9'

Toe Rocker Arm Ball Joint rotary torque = 1.0Nm - 2.6Nm

Stabilizer Link Ball Joint rotary torque = 0.5Nm - 1.5nm

 

[bradc]

Just for the record, you want the toe angle to be should be half as much as the camber you have. IE if you have 2 degrees of camber, you want 1 degree of toe in for best tyre life.

If you want to go around corners really well, set the rears to 0 toe and set the fronts to a small amount of toe out, around 1 degree. This will chew through your tyres quickly though

 

[Kitty's VR4]

Brad,

I just translated that out of the japanese manual, would you like it changed??

 

[Guest]

How about if you just set 0° toe all around?

 

[bradc]

The figures above are just general figures that are kind of within some vague spec.

 

[Guest]

Thanks very much for the advice, Brad and for the specs, Kat! Very helpful. I have a feeling the mob who put my wheels on "guessed" (badly) the specs. It hasn't been right since.

 

[mills_88]

My three green bars light up at startup, the red warning light also comes on before turning the key and then as soon as the engine comes on they all go out and i dont see them again till i start the car again???

 

[mills_88]

To put it another way, its as if the system isnt sensitive enough, and is never activated.

 

[harry]

I get 1 or 2 bars well before you're even trying in my car. 3 bars well before the KU36 tyres are anywhere near their limit. but they are a pretty grippy street tyre.

 

[mills_88]

Anyone know if you can adjust the sensitivity?? Sorry if stupid question

 

[frozen]

harry - off topic but how do they feel those tires... as in are they any good comfort wise? do they feel soft or harsh??

back on topic - could the sensors be playing up or dirty... the ones that tell the AYC to do its thing

 

[harry]

slightly harsher than a normal street tyre. nothing to worry about. I get a fair bit of road noise though - didn't get that with them on my JZA80 Supra...

 

[bradc]

Matt - what happens when you get the tyres squealing and sliding? Still no bars

Harry - that is how it should be, probably a bit too sensitive!

 

[mills_88]

No , nothing..