An air pump, also commonly referred to as a smog pump, is an emissions component that is part of the secondary air injection system. It is responsible for pumping clean air into the vehicle’s exhaust stream to promote a cleaner and more complete burn before the fumes exit the tailpipe.
The smog pump is responsible for supplying fresh, pressurized oxygen into the exhaust stream near the exhaust manifold. This fresh air then travels through the diverter valve, check valve, and to the exhaust manifold where it’s mixed with exhaust gases to help burn off any unused hydrocarbons.
Also Know, can you drive with a bad air pump? You may be driving normally and then suddenly experience engine stalling or hesitation in your vehicle. A secondary air injection pump that is wearing down can cause inconsistent power gaps from the engine. One minute the power may be fine, and the next the RPM drop too much and the engine shuts off.
Also Know, is a smog pump needed?
The air injection smog pump pushes air into the exhaust system right after the exhaust manifold, to help intercept and burn those unburned fuels. The system is critical to help cars achieve government emissions standards. So, the law says you need a secondary air injection system.
How much does a smog pump cost?
The average cost for an air pump replacement is between $560 and $696. Labor costs are estimated between $88 and $113 while parts are priced between $472 and $583. Estimate does not include taxes and fees. When would you like to drop off your car?
How much horsepower does a smog pump use?
The smog pump is a “cheater” in that it pumps fresh air into the exhaust, and only uses 1-2 hp tops.
Can you drive with a bad smog pump?
Again, a failed smog pump can upset the tune of the vehicle, which will negatively impact overall engine performance. A failed air pump may cause the engine to hesitate or stumble on acceleration, and in more serious cases, cause a noticeable reduction in total power output.
How long does the secondary air pump run?
How do you check a smog pump?
Spin the pump shaft clockwise while listening for unusual bearing noises. You should hear some noise from the vanes in the pump. The same noise should change pitch/tone when spinning the pump backward. If you hear the rollers in the bearings, either change the bearings or the pump.
What does p0410 code mean?
P0410 is an OBD-II generic code that the engine control module (ECM) detected the engine O2 sensor did not detect an increase in the O2 level in the exhaust when the air injection system was commanded on during an active test.
What is a smog device?
A smog check tests your car’s exhaust system to see how many pollutants your car is emitting, as well as the type of pollutants that are being emitted. Your car’s tailpipe will have a device connected to it that will measure the car’s emissions both while the vehicle is in idle, and while the engine is revved.
What is the purpose of secondary air pump?
The purpose of the secondary air injection pump is to prevent hydrocarbons from getting into the environment. A lot of times the secondary air injection pump is called a smog pump for this reason. The smog pump is located right past the exhaust manifold allows air to be pumped into the exhaust.
Where is the smog pump located?
The air pump is at the front of the engine with the serpentine belt wrapped around it.
What does an air pump check valve do?
The air pump check valve is the valve that allows air supplied from the air pump to be pumped into the exhaust stream to reduce hydrocarbon and carbon monoxide tailpipe emissions.
What is an air pump relay?
The PCM supplies a ground to the AIR pump relay, which energizes the AIR pump. The electric air pump pressurizes air from the engine and pumps it to the check valves near the exhaust manifolds. The AIR pump is controlled by the PCM. Battery voltage to the AIR pump is controlled by the AIR pump relay.
How much does it cost to fix a secondary air injection?
All cars are required to have secondary air injection systems, which make exhaust emissions cleaner and help to combust more harmful gases. If your secondary air system fails, then replacing it will cost you between $270-$390. The labor should run you about $90, while parts cost, on average, about $250.
What causes secondary air injection malfunction?
This code is actually pretty common, and it’s usually caused by air pump pressure escaping to the outside if any of the air pipes that lead to the combustion valve is damaged or lodged after changing the spark plug.
What is Mercedes secondary air pump?
Mercedes – Secondary Air Injection System Issues. This is a critical system in your Mercedes that helps decrease tailpipe emissions while the car is warming up. The system works by using an air pump to inject fresh air into the cylinders to lean out the rich fuel mixture that occurs during engine startup.
What is secondary air system?
October 2015) (Learn how and when to remove this template message) Secondary air injection (commonly known as air injection) is a vehicle emissions control strategy introduced in 1966, wherein fresh air is injected into the exhaust stream to allow for a fuller secondary combustion of exhaust gases.