Issue with AYC

[DELMINATOR]

sorry im new to this m8 when i start my car the ayc seems to work for about 1o seconds then the red ayc light come on and then it stops working

[DELMINATOR]

it seems to work for ten seconds then i get a red ayc light any surgestions

[DELMINATOR]

sorry im xbox addict not use to web chat how do i start a thread and in which forum

[Nutter_John]

New thread started for you

[Roberto]

New thread started for you

Cheers, NJ, was just about to gently point him in this direction.


DELMINATOR, chances are your AYC pump is getting weak and not pumping hard enough, it is possible to change the pressure switch to one that activates at a lower pressure.

But one thing I'm thinking about is how old is the AYC control fluid itself?

[DELMINATOR]

m8 i have had my car a year and its been the same i only found out what it was when i went to a meet on saturday and im gutted im trying hard to keep on top of my car and every garage is cluless

[Nutter_John]

Given it is a little late in the day you will more than likely get some good asnwers tomorrow .

But have a search around there are loads of threads on AYC issues , I would put money on it being the switch (weak pump ) or the fuild

[DELMINATOR]

i have had it a year and its only because i went to a meet on saturday i found out what it was all about and now i need to get it sorted

[DELMINATOR]

are all the problems you list all housed under the back right hand side of my car

[DELMINATOR]

Given it is a little late in the day you will more than likely get some good asnwers tomorrow .

But have a search around there are loads of threads on AYC issues , I would put money on it being the switch (weak pump ) or the fuild
if u were smokin the same good **** i am you would be slow to lol/megawoot

[DELMINATOR]

u still on m8

[vr4-fan]

change your oil AYC , you need 2 litther amsoil atf , and then if the problem continue , change the ship

[VR4WGN]

change the ship?? damn i want a refund i didint get no ship!!

[elnevio]

There are two lots of AYC fluid (i.e. ATF) to worry about with the AYC:

1. Clutch packs - the fill and drain bolts are on the actual diff itself. This is the fluid that is most likely to be knackered. Unfortunately, the only way of checking it is to get some out of the diff itself.

2. Actuators - these are serviced by the reservoir in the boot, on the right-hand side by the rear light cluster. You can check the condition of the ATF there.

In both cases, the ATF should be a nice ruby red colour. Anything from orange through brown to black should be replaced - quickly.

Amsoil ATF is an excellent fluid to use in this application, as it will outlast anything else put in there, especially in the clutch packs, which is where it's subjected to the greatest wear and pressure.

However, Mitsi's SP-III ATF and their 'AYC Fluid' (not sure if it's actually the same thing with a different name!) will do the job, as will most ATFs (unlike the auto gearbox).

The other part of the diff takes normal diff gear oil. 75w-90 / 80w-90 can be used (although shouldn't be affecting the AYC if knackered - but still good advice to check and change this if necessary).

Anyway, if the AYC still isn't fixed (which is likely, as it still normally works, even if the AYC fluid is roasted, just with a lot of screeching noises!), then yes, it is likely that the pump can't provide the required pressure any more. Fortunately, the procurement and fitting of an adjustable pressure switch (available from a member on here, MPBVr4 at around £40 or so) will extend the service life of the pump for a while, quite often a good few years.

In a nutshell, I'd be very surprised if the pump pressure wasn't at fault here, and couldn't be fixed with an adjustable switch. /yes

[Turbo_Steve]

Just to back up Nev and John and everyone else, this sounds exactly like your AYC pump is weak.

As mentioned, an adjustable pressure switch will buy you a lot more time for £40. Sooner or later it's going to need a new pump, however.

If you haven't already serviced your AYC, you need to be getting it done soon.
I would suggest you join up as a club member, and one of the expert members in your area might offer to help you for a very reasonable price.

[Roadrunner]

Or ... you could live without the AYC ;)

Since fitting the steering wheel from the Evo VII GTA, my AYC doesn't work (sensor missing from the new wheel apparently) and the red AYC warning is on all the time. Changing the fluid is still a good idea as it will protect the pump and clutches, and I'd also change the diff oil if you don't know its condition. But, if the AYC pump is shot, I wouldn't lose a lot of sleep over it.

I haven't really noticed any difference, even when I did 30+ laps of Knockhill in the wet. I don't get the green bars anymore, though, and I miss them ... :sigh: :)

[DELMINATOR]

There are two lots of AYC fluid (i.e. ATF) to worry about with the AYC:

1. Clutch packs - the fill and drain bolts are on the actual diff itself. This is the fluid that is most likely to be knackered. Unfortunately, the only way of checking it is to get some out of the diff itself.

2. Actuators - these are serviced by the reservoir in the boot, on the right-hand side by the rear light cluster. You can check the condition of the ATF there.

In both cases, the ATF should be a nice ruby red colour. Anything from orange through brown to black should be replaced - quickly.

Amsoil ATF is an excellent fluid to use in this application, as it will outlast anything else put in there, especially in the clutch packs, which is where it's subjected to the greatest wear and pressure.

However, Mitsi's SP-III ATF and their 'AYC Fluid' (not sure if it's actually the same thing with a different name!) will do the job, as will most ATFs (unlike the auto gearbox).

The other part of the diff takes normal diff gear oil. 75w-90 / 80w-90 can be used (although shouldn't be affecting the AYC if knackered - but still good advice to check and change this if necessary).

Anyway, if the AYC still isn't fixed (which is likely, as it still normally works, even if the AYC fluid is roasted, just with a lot of screeching noises!), then yes, it is likely that the pump can't provide the required pressure any more. Fortunately, the procurement and fitting of an adjustable pressure switch (available from a member on here, MPBVr4 at around £40 or so) will extend the service life of the pump for a while, quite often a good few years.

In a nutshell, I'd be very surprised if the pump pressure wasn't at fault here, and couldn't be fixed with an adjustable switch. /yes
dude thanks you cleared a good bit of that up for me i have all ready got sp 3 on route and got a ranp booked for the morning i have had this problem 4 a year and only just found out what i have been missing out on thanks to the bhoys at the moffat meet that clued me up. any other advice on changing the fluid completly would be awsome as my mechanic is learning my car as we go along

[DELMINATOR]

Or ... you could live without the AYC ;)

Since fitting the steering wheel from the Evo VII GTA, my AYC doesn't work (sensor missing from the new wheel apparently) and the red AYC warning is on all the time. Changing the fluid is still a good idea as it will protect the pump and clutches, and I'd also change the diff oil if you don't know its condition. But, if the AYC pump is shot, I wouldn't lose a lot of sleep over it.

I haven't really noticed any difference, even when I did 30+ laps of Knockhill in the wet. I don't get the green bars anymore, though, and I miss them ... :sigh: :)
i cant miss what i never had

[DELMINATOR]

change the ship?? damn i want a refund i didint get no ship!!
awsome car

[MPBVr4]

Normally I'd be in like shot saying "you need a new switch" but I ain't got prefacelift ones at the moment. They are made in Germany and when the Credit Crunch hit ,factory employees were put on short time working, sponsored by the German Government. However, this was a 2 year commitment and now orders have picked up they can't be fulfilled because there's not enough people to make them apparently. And I thought our Government was short sighted/wall

I'm trying find an alternative supplier so might be able to help shortly.

[timmae2009]

How much is an accumulator and pressure switch...im in australia and ive been quoted $300+ for an accumulator....thinks im getting ripped off...

[chris g]

What is an accumalator...?

Where is it on the car...?

Is it related to an AYC problem...?

[peter thomson]

The accumulator is attached to the AYC pump. I thought though that most parts weren't available unless it is a secondhand one

[timmae2009]

Im being told its brand new but i dont know much bout it myself tbh.....all i know is for the past 12 months i get an annoying noise come from the back end at 1 second intervals and i bled the ayc system when serviced it and heaps of trapped air came out, the noise dulled a bit but hasnt completely gone away, now its back a week later worse than before...im being told the pressure switch is faulty or the pump is and it requires a new accumulator.........thats why ive put this up has anyone esle had this problem or know what im on about?

[elnevio]

Get them to give you the part number, and then post it up here. We will then be able to look in ASA and confirm exactly the part they mean.

[MPBVr4]

Got some switches now;)

[Turbo_Steve]

A leaky accumulator would fit with the system not holding pressure / air ingress etc

As accumulators are usually just a chamber with a diaphragm and a spring, I wonder if an alternative could be found....

[elnevio]

Got some switches now;)
Yay! /woot2

[timmae2009]

Get them to give you the part number, and then post it up here. We will then be able to look in ASA and confirm exactly the part they mean.

Ok ill try get the part number sorted.......was thinking bout just taking the ayc out all together and putting an evo lsd diff in instead but not sure whats cheaper :thinking2

[timmae2009]

A leaky accumulator would fit with the system not holding pressure / air ingress etc

As accumulators are usually just a chamber with a diaphragm and a spring, I wonder if an alternative could be found....

Apparently an evo accumulator will do the job but its part of the pump as one unit so until i see it for myself im just goin off what is being told to me.... Evo part is $300 AUD..... maybe i should take it too an evo specialist who knows the AYC system well??