R5COS

does anyone know what would cause the AYC light on a evo 6 to stay on, a mate of mine said it came on during the week but would go off again after awhile, tonight he changed the diff oil with proper grade oil but now the light wont go off at all... any ideas ??

Dicko&Vacant

iTrader: (3)

maybe the pump is goosed? or even possibly the diff? a mate of mine just bought a evo 5 and ayc light is on and its the diff thats goosed

oh and pm me if he needs any bits specially a diff

R5COS

will do mate thanks

RogerRally

If a thick old fluid is flushed out and new thinner is replaced, then the 8 year old pump cant maintain the correct pressure to operate the diff correctly, so the ecu cuts off the little motor to prevent burning out.
(fit an RS diff and be done with it all!)

B13 JUS

iTrader: (24)

take it to mitsubishi and get them to bleed it mate, if you have'nt already done it.

silky16v

iTrader: (1)

pull ya pants down and be ass raped at the sametime, i would suggest you check the AYC pump as this is a seperate system to the AYC Diff fluid

Is there any fluid in the Bottle in the boot? if so check that its not filthy black, then check your pump connection?, then if all else fails have the AYC pump circuit bled up

Lambchop

iTrader: (1)

cracking idea in principle but arent they bloody expensive and like hens teeth??

turbo_3dr_tommy

is there any whinning from the back end at all ???

Big Will_

Probably means the AYC pump is toast.

Very common failure sadly - it usually means it can't make the correct operating pressure and no matter how much bleeding you do - it won't pressurize.

R5COS

thanks chaps

Paulo P

You can sometimes fix it by changing the pressure switch. You can get ones from RogerRally and they are adjustable, I think it's only a temporary fix though because it generally means the pump is on it's way out.

RogerRally

Just to clear up an old thread, To prevent any confusion as the whether an adjustable type switch is a cure, or a cover up, I now hire out a pressure tester Gauge, to check if the pump is still putting out a usefull amount of pressure to be able to operate the diff effectively, before fitting another switch.

http://www.erento.co.uk/hire/vehicle...r-accessories/

Trist

RogerRally== A mate has an evo 6 and me and him fitted a new AYC switch that you supplied, he has changed fluid as the light was on in warm temps, with that and the switch all is good. just wanted to say that the instructions you supplied with it are excellent and made the job easy.. good stuff

C4llyT

AYC light was on on TME brother looked at, bought it as long as light was out.
Bloke got discount at Mitsubishi as put a lot of work their way, bill was still £2700 I think
Needed a pump.