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AIR SOL - fuse #54 15amp - AIR fuse #56 60amp location under hood fuse / relay box
54
AIR SOL Fuse
15A
AIR SOL Relay, Secondary Air Injection (AIR) Pump Relay, Secondary Air Injection (AIR) Pump, Secondary Air Injection (AIR) Solenoid
55
AIR SOL Relay
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Secondary Air Injection (AIR) Solenoid
My aurora did the same thing, and I did replace the secondary air injection unit, mine has the 4.0 v-8 and the location of the one I changed is near firewall in the middle above the valve cover/coil over unit. see if the vacuum line popped off or melted that's what mine did, and exhaust was escaping did cause veh to perform poorly, and couldn't get but about 65 mph tops on the interstate. changed the rear one and problem solved. however it could be caused by a plugged catalytic converter which could cause the air injection to go bad. I took my catalytic converter off and cleaned/knocked it out. but depending on your local codes if your county requires the emission testing you would need to replace the catalytic converter. Luckily my county does not.
p0412 Secondary air injection switching valve A circuit Right side of engine compartiment. ( underhood fuse block ) - Air pump fuse 50A- Air control valve relay- ignition1 fuse 10A ( positive for the relay )The secondary air injection pump relay is located near radiator surge tank.Left front of engine compartiment = Secondary air injection pump
Your car uses an air pump, usually driven by the serpentine belt, to add air to the exhaust manifold to help burn any gas left in the exhaust ahead of the catalytic converter. This code is telling us there is something wrong with the valve or solenoid that controls the airflow into the manifold. I don't have details on how to troubleshoot those components, but a good scan tool may be able to do it.
Two of the more common problems with Auroras.
P0442 - There is a small solenoid (about $30.00) mounted near the L.R. wheel that will fix this.
P0410 - Usually due to leaking Air Injection Valves. These are about 2" square, one near the passenger side firewall, the other near the drivers side radiator. They cost about $200.00/ea. most people just leave it go as it does not effect performance.
the pump should be underneath the trunk behind right rear tire, if not follow the noise when the pump is running - the leveling switch is on the rear suspension arms - sounds like the pump is not pumping enough air or you have an air leak in the struts
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