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95 Posts
Hey Guys and Gals!
My 2008 Cobalt LT (2.2 motor) has been throwing a check engine light regarding the secondary air system for about a month now, Multiple codes regarding it. Valve failed or seized causing water to get to the pump which too failed.
This week, i decided to fix it, i bought a new smog pump and a new check valve.
i swapped out both parts valve and pump.
Only code i get now is P0411.
when starting the car now the pump is active and i can hear it. i do not think i hear the valve opening or closing (i dont think its getting any power). the only code i am now getting is a P0411.(incorrect flow)
how can i test to see if the valve is working properly? what tests/checks can i perform regarding relays and fuses.
the smog pump fuse and relay are listed in the fuse box but i am unable to determine if the valve has its own fuse.
i am not getting the common sound of the valve opening and closing (tone change) with the air pump running and the system completing its cycle.
TLDR: how can i test the valve and its fuses; which fuses to check for the valve. how can i check the valve to ensure it is working with a 12volt power on its terminal.
has anyone encountered this before; P0411 code after a new valve and a smog pump?
i appreciate it thank you!
My 2008 Cobalt LT (2.2 motor) has been throwing a check engine light regarding the secondary air system for about a month now, Multiple codes regarding it. Valve failed or seized causing water to get to the pump which too failed.
This week, i decided to fix it, i bought a new smog pump and a new check valve.
i swapped out both parts valve and pump.
Only code i get now is P0411.
when starting the car now the pump is active and i can hear it. i do not think i hear the valve opening or closing (i dont think its getting any power). the only code i am now getting is a P0411.(incorrect flow)
how can i test to see if the valve is working properly? what tests/checks can i perform regarding relays and fuses.
the smog pump fuse and relay are listed in the fuse box but i am unable to determine if the valve has its own fuse.
i am not getting the common sound of the valve opening and closing (tone change) with the air pump running and the system completing its cycle.
TLDR: how can i test the valve and its fuses; which fuses to check for the valve. how can i check the valve to ensure it is working with a 12volt power on its terminal.
has anyone encountered this before; P0411 code after a new valve and a smog pump?
i appreciate it thank you!