Power Issues/Seems to be related to ESP/ABS -- Audi s4

[m.s4]

Originally Posted by Richard L

I wonder if you can wiring the red wire of the grey connector directly to the igniton key switch (run of pre-crank position). Make sure it has a full 12V.

This inteference is so strange.

Is the s4 a FSi (direct injection system)? I think it is just a conventional injection system.

It's already wired to the ignition switch.

it's not FSI. I have it tapped into a fuel injector wire.

[m.s4]

Richard,
I have both power wires going directly to the batter with a switch in between the smaller power wire that comes from the ecu harness.

If I turn the car on then power up the aquamist everything turns on normally, then when I turn the car off (if I don't turn off the aquamist first) as soon as the car is off the pump starts running (is this normal?)

Also, If i have the car off and start the system directly from the battery, once it is booted up the pump runs (gauge lit and bars flowing).

Is my controller bad?

Regards,
Mark

[Richard L]

Do not start the system until the kety switch is on the pre-crank position. If the system is switched on (battery power), the system will spray fully will flood your engine.

This is becuase if there is no 12V power to the fuel injector, the system will mistakenly think the injector is at 100% duty cycle and start o inejct.
Only manually start the system after the enigne is running.

When the system was powered from the battery, did you still have flickering problems?

[m.s4]

Originally Posted by Richard L

Do not start the system until the kety switch is on the pre-crank position. If the system is switched on (battery power), the system will spray fully will flood your engine.

This is becuase if there is no 12V power to the fuel injector, the system will mistakenly think the injector is at 100% duty cycle and start o inejct.
Only manually start the system after the enigne is running.

When the system was powered from the battery, did you still have flickering problems?

Snowing pretty heavily, but I didn't on the way home tonight.

I will see more tomorrow.

[Richard L]

Please remind me, which part of the world are you located?

[m.s4]

Originally Posted by Richard L

Please remind me, which part of the world are you located?

Minnesota, USA

Acted up this morning with everything hooked directly to the battery, not sure where to turn now.

[Richard L]

I am wonder if the unit is subject to smal mosture condensation on the circuit board. Please pm me youir address and I like to send you another controller and see if it behaved the same.

During this time, can you rap up the unit or put it in a plactic bag and let me know if it improves.

Richard

[m.s4]

PM Sent,

The controller is inside though, in the dash on the driver side.

When I get wheelspin I'm seeing a slight dip in volts but nothing under 13-13.4v.