AYC failure?

[fassi1]

Just quick one.
None of the green lights comming up while driving hard around the bends and roundabouts.
Don't get red warning light and 3 green lights after turning ignition on come up and disappear.
Any ideas?

[aboo]

Does the red AYC light come on then go off when you turn on the ignition?

[fassi1]

No it doesn't.
Checked the fuse and it is ok.

[Ryan]

What happens when you drive around the bends? Can you feel the arse begin to step out and then be corrected or do you start to lose the rear?

[wintertidenz]

Check the AYC ECU behind/to the side of the glovebox. It may be disconnected, or have been removed.

[Subaru ETA]

Does the car even have AYC? Could not have it but had a hi vis dash fitted?

[fassi1]

Yes it does.
Im during lpg installation and, wiring and lpg ECU at the moment.
I diconnected battery and pulled plugs out from engine ECU.
Needed +12V after ignition so connected battery, turned ignition on and tested some of the pins in the plugs so at that moment engine ECU was disconnected and ignition was on.
Would that cause some trouble?

[foxdie]

Was it working before you started tampering / fitting the LPG kit?

[Wodjno]

Yes it does.
Im during lpg installation and, wiring and lpg ECU at the moment.
I diconnected battery and pulled plugs out from engine ECU.
Needed +12V after ignition so connected battery, turned ignition on and tested some of the pins in the plugs so at that moment engine ECU was disconnected and ignition was on.
Would that cause some trouble?

That shouldn't have caused the issue, but you never know. I don't think there is anything relating to AYC on the main ECU plugs. I have installed boost controllers and Piggy back ECU's all without disconnection of battery and never had any issues.
Instead of searching for 12v+ feed, you should have searched site for full ECU pinout diagram.

[pezza]

If you have a pump failure there is no way of finding out now without pulling the codes, as that red check light is not illuminating..

I can whizz by after work armed with evoscan to have a look.

From what you have done re wiring it doesn;t sound related but you never know.. hopefully evoscan will shed some light

[fassi1]

Yeah hopefully evoscan will tell.
I got really confused as it was ok when was dry ariund and it started to rain so my thoght was that caused some problem
and i sterted with lpg at the same time so i was lost with ideas whats wrong with it.
Ive converted many cars to lpg and ive done legnum too but u never know.

[Gingerfish]

Does the red AYC light come on then go off when you turn on the ignition?

My red AYC light has been coming on intermittantly. Does that mean my ayc pump's playing up?

[foxdie]

@fassi1 can you confirm if you see both red and green AYC lights pop up briefly when you turn the ignition on?

If you only see the green, then the red AYC bulb has blown or been removed (probably to hide a fault).

If you are seeing neither, that's a power or AYC ECU fault.

If you are seeing both, but then nothing afterwards, it could be a wiring fault (either to the engine ECU or sensors) or an AYC ECU fault.

Just as an afterthought to my last point, if the AYC ECU isn't seeing the throttle position sensor, or the gearbox speed sensor, it could potentially "think" that the car is stationary all the time and not be doing anything. The AYC ECU won't actually do anything if the vehicle is below a certain speed.

[foxdie]

My red AYC light has been coming on intermittantly. Does that mean my ayc pump's playing up?

Possibly yes, does it happen particularly after a long run?

What tends to happen is as the AYC fluid heats up, it thins out and the pressure drops, meaning the pump has to work harder. If the pressure switch (first thing to check) or the pump are failing, this would result in an intermittent fault.

[fassi1]

I do get only green lights popping up, no red light at all.
Dek mantioned that red light under the coolan gauge but tbh ive never seen one on my car since i bought it.
Sounds like bulb been taken out, rubbish

[adaxo]

Take dash out and check, two screw holding plastic surround and 4 screw holding dash itself, 5 mins and we can look further if bulb is not present or burn.

[Gingerfish]

Possibly yes, does it happen particularly after a long run?

What tends to happen is as the AYC fluid heats up, it thins out and the pressure drops, meaning the pump has to work harder. If the pressure switch (first thing to check) or the pump are failing, this would result in an intermittent fault.

I havn't taken it on any particularly long runs recently, but the ayc fluid heating up makes a bit of sense as when I leave the car standing once the light comes on, the light goes out if I leave it for at least half an hour or so.

[fassi1]

Mark should know if there was red AYC warning light popping up after turning the ignition on, he has owned the car for 2 years.

[pezza]

if the fuse is dead I think that red light will fail to come on.... can take a look at that later mate

[fassi1]

That would b great.