Hi,
I'd need an info about how VEMS drive the IACV:
is there any reason why with IACV PWM DC at 0% the valve is COMPLETELY opened (like 100%) and the minimum I can use to close it is 1%?
How could I completely close the IACV then?
Thanks
Quote from: Wolf_Tm on December 27, 2016, 12:55:17 PM
Hi,
I'd need an info about how VEMS drive the IACV:
is there any reason why with IACV PWM DC at 0% the valve is COMPLETELY opened (like 100%) and the minimum I can use to close it is 1%?
How could I completely close the IACV then?
Thanks
are you sure you are connected it right way? + is there a diode on it?
Quote from: Kamuto on December 27, 2016, 11:53:24 PM
Quote from: Wolf_Tm on December 27, 2016, 12:55:17 PM
Hi,
I'd need an info about how VEMS drive the IACV:
is there any reason why with IACV PWM DC at 0% the valve is COMPLETELY opened (like 100%) and the minimum I can use to close it is 1%?
How could I completely close the IACV then?
Thanks
are you sure you are connected it right way? + is there a diode on it?
Hi Kamuto,
I'm pretty sure I connected in the right way... it's a 3 wire IAC (positive. gnd, ecu controlled gnd).
I didn't put the diode because it worked almost ok, unless for the fact that it works correctly from 100% down to 1% IAC DC... but as I select/get to 0%, it totally opens up as it was a 100%:
do you think the diode would solve it?
Quote from: Wolf_Tm on December 28, 2016, 06:29:56 PM
Quote from: Kamuto on December 27, 2016, 11:53:24 PM
Quote from: Wolf_Tm on December 27, 2016, 12:55:17 PM
Hi,
I'd need an info about how VEMS drive the IACV:
is there any reason why with IACV PWM DC at 0% the valve is COMPLETELY opened (like 100%) and the minimum I can use to close it is 1%?
How could I completely close the IACV then?
Thanks
are you sure you are connected it right way? + is there a diode on it?
Hi Kamuto,
I'm pretty sure I connected in the right way... it's a 3 wire IAC (positive. gnd, ecu controlled gnd).
I didn't put the diode because it worked almost ok, unless for the fact that it works correctly from 100% down to 1% IAC DC... but as I select/get to 0%, it totally opens up as it was a 100%:
do you think the diode would solve it?
first of all, you will never reach 0% in reality.. no diode there wont help :) it's more your iac valve problem, not ecu :) just limit it at idle hardware settings, like 10% min and 90% max :)
Quote from: Kamuto on December 28, 2016, 11:23:34 PM
Quote from: Wolf_Tm on December 28, 2016, 06:29:56 PM
Quote from: Kamuto on December 27, 2016, 11:53:24 PM
Quote from: Wolf_Tm on December 27, 2016, 12:55:17 PM
Hi,
I'd need an info about how VEMS drive the IACV:
is there any reason why with IACV PWM DC at 0% the valve is COMPLETELY opened (like 100%) and the minimum I can use to close it is 1%?
How could I completely close the IACV then?
Thanks
are you sure you are connected it right way? + is there a diode on it?
Hi Kamuto,
I'm pretty sure I connected in the right way... it's a 3 wire IAC (positive. gnd, ecu controlled gnd).
I didn't put the diode because it worked almost ok, unless for the fact that it works correctly from 100% down to 1% IAC DC... but as I select/get to 0%, it totally opens up as it was a 100%:
do you think the diode would solve it?
first of all, you will never reach 0% in reality.. no diode there wont help :) it's more your iac valve problem, not ecu :) just limit it at idle hardware settings, like 10% min and 90% max :)
Yes, you're right, in fact I later opened up the valve and discovered that the factory setting was not totally closed at 0%:
I turned the solenoid a bit in its buttonholes and now it's fine!