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What does the BMW secondary air pump do?

Once the vacuum vent valve becomes energized, a vacuum is applied to the non-return valve which allows air to be injected into the exhaust manifold through the pump. A vacuum is retained in the lines, by the use of a check valve, in order to allow the non .

: BMW Vacuum Line - Emission Control Valve to .

Secondary air pump vacuum line with high temp silicone ends. Don't spend 40.00 on buying this at the stealership, this is same one I use in my families 2000 323Ci, 2000 328I and 2002 330CI. If you have a check engine light on and your engine is throwing codes, it could be a simple vacuum leak. The original hose from BMW cracks and leaks over time.

Secondary Air System Delete / SAS Simulator Install E39 .

Sep 27, 2017 · How to delete the dead weight of the Secondary Air System - Remove/cut the two hoses going into the pump. The pump is held in with three 10mm bolts. You can get pretty good access with an extension and ratchet. One hose goes out to the engine compartment and valve. The other just goes to the pump intake filter visible next to the pump.

Problem with secondary air injection and the idle is hunt.

Dec 25, 2016 · Check the air pump and make sure that its functioning correctly. If the pump is working like it should, then check the hoses on the air pump for any dampness. If they are damp, then the pump may have water in it and the pump would need replaced. If the pump is dry and the lines are dry, then the vent solenoid could have an issue and not purging .

BMW MINI – P0491 and P0492, Secondary Air Flow .

Jan 26, 2017 · I have a 2000 540i. I got the dreaded secondary air pump related codes the other day after my sap [seondary air pump] died, so I switched out the pump, check valve, relay switch and vacuum lines, but still [have the] P0491 and P0492 codes. My gas mileage is terrible so I am pretty sure the the O2 sensors are bad.

BMW Vacuum System Parts | FCP Euro

BMW Secondary Air Valve Vacuum Line - Rein 11727574490 323Ci, 323i, 325Ci, 325i, 325xi, 328Ci, 330Ci, & more 1 Reviews Available In Stock. QTY 18.77 + BMW Vacuum Pump - Genuine BMW 11667619350 Produces vacuum for the brake booster, located under intake manifold, includes replacement gasket 135i, 335i, 335i xDrive, 535i, 535i GT, & more Available

BMW electrical systems auxiliary equipment faults and .

Vacuum Hose to Secondary Air Non-Return Valve Model: BMW E46 – 323i/iA, 328i/iA produced between April 1998 and July 1998 Complaint: The vacuum hose going to the Secondary Air Non-Return Valve may be wrongly routed. Consequently if this hose connects with the exhaust system it may set off the following faults may set within the Engine Control .

Bmw e65 vacuum hose - Fixya

I researched the web and found that on the BMW, this is the secondary air pump for cylinders 1-3 that provides air to the exhaust during warm up. According to others, this may be due to a check valve stuck open or closed. Or, it could also be a leak in the output hose or a vacuum hose to the valves.

P0491, P0492, P0171, P0174 error codes on BMW 325i.

Apr 18, 2013 · The secondary air system consists of the air pump, the control valve, the hose between them and the vacuum line to the valve. First check to see if the pump operates when you first start the car. It should sound like a mini hand held vacuum cleaner. The hose .

My troubleshooting and repair of codes P0491 & P0492 .

May 12, 2011 · I went online and started reading on what the secondary air control system consists of. Air pump (not shown here), check valve (#1), solenoid vacuum control switch (#5), another little non-return valve (#6) and lots of vacuum line (#3,4,7) to connect these components as well as relays and fuses (not shown here). Nice!

Secondary-air system · Technipedia · Motorservice

The secondary-air shut-off valve ensures that secondary-air is only routed to the exhaust manifold in the cold starting phase. Secondary-air valves are either actuated by a vacuum controlled by a solenoid switching valve or open in response to the pressure of the secondary-air pump. With more recent generations, the shut-off and non-return .

Secondary air pump code - 318ti.org forum

Apr 25, 2014 · 328ti, it's off of the T-fitting, but the hoses are all rubber vacuum lines and sits underneath the lower intake. From what i gather, M44 is a different setup then the M42 because it does not have a secondary air pump but i don't know how different the lines that do run are. And BlackBMWs i would greatly appreciate pictures.

Secondary Air System Delete / SAS Simulator Install E39 .

Sep 27, 2017 · How to delete the dead weight of the Secondary Air System - Remove/cut the two hoses going into the pump. The pump is held in with three 10mm bolts. You can get pretty good access with an extension and ratchet. One hose goes out to the engine compartment and valve. The other just goes to the pump intake filter visible next to the pump.

P0492 Secondary Air Injection System Insufficient Flow Bank 2

The secondary air injection system, commonly found on Audi, BMW, Porsche and VW vehicles – and may be found on other vehicles – features an air pump, an exhaust manifold, an input check valve, vacuum control switch, an electrical input circuit for the vacuum control switch and tons of vacuum hoses. This system pumps fresh air into exhaust .

How to Replace a Secondary Air Injection Pump .

Sep 30, 2016 · Reinstall the vacuum lines and electrical connections, if any. Step 4: Reinstall the air pump hoses. Slide the hose back over the pump connection and tighten down any clamps. Step 5: Reinstall the serpentine belt. Reinstall the serpentine belt by pushing on the tensioner so that the belt can be slid over the pulleys. Tip: Consult the underhood .

Secondary air pump noise | BMW E46 Fanatics Forum

Apr 13, 2014 · The one I replaced is the air pump smog hose and it's plainly visible between the air pump (11721435364) and the smog pump check valve/emission system control valve (11727553063). The place I got the part from is AutoHausAZ.com. 14.59 + shipping.

Find BMW E46 Secondary Air Pump Vacuum Line 11727574490 .

Custom secondary air pump vacuum line with high temp silicone ends (only black ends are available, blue is sold out). Don't spend 30.00 on buying this at the stealership, this is same one I use in my families 2000 323Ci, 2000 328I and 2002 330CI.

Fuse Box Diagram BMW 1-series (E81/E82/E87/E88; 2004–2013)

Secondary air injection pump N45 (116i): Electric vacuum pump: F71: 20: Trailer socket: F72: 15: N45, N45/TU2 (116i): Relay, electric vacuum pump: F73: 10: N46/TU2 (118i, 120i), N45/TU2 (116i): Crankshaft sensor E-box fan Fuel tank vent valve Hot-film air mass meter 03.2007-09.2007: N52 (125i, 130i): EAC sensor Secondary air pump relay E-box .

: BMW Genuine Secondary Air Injection Vacuum .

Walmeck for BMW E46 Secondary Air Pump Vacuum Line Emission Control Valve to Vacuum Control Valve 11727574490 16.79. Rein ABV0202 Vacuum Line 5.0 out of 5 stars 3. 30.48. labwork Vacuum Valve Sucking Jet Pump Intake Hose Brake Booster Assembly Fit for BMW E46 E39 4.5 out .

1998 528i no power to Secondary Air Pump - Pelican Parts .

There is a valve/switch installed down stream of the scondary air pump. It is vacuum operated. I followed the vacuum line to a switch mounted between intake runners 1 & 2. I'm guessing that when the switch is activaed it lets vacuum pass through to the valve/switch downstream of the secondary air pump.

Emission Systems for 2002 BMW 330xi for sale

For BMW 330xi 2001-2006 URO Parts Secondary Air Injection Pump Hose. 10.67. Trending at 12.46 + 12.09 shipping. BMW Air Pump to Control Valve Hose 11 72 7 555 680. 11.90. Trending at 12.06. . For BMW 330xi Secondary Air Injection Vacuum Delay Valve Pierburg 12398RF (Fits: 2002 BMW 330xi) 2001-2003 2004 2002 2005. 37.37. Brand: Pierburg .

Electric Solenoid Valve, OEM - 11747810831

This little electrical solenoid operates the exhaust flap or secondary air pump valve. It's also known as a vacuum control valve. It regulates the vacuum needed to operate the valve or exhaust flap. The barbed connector on the end can be fragile, especially over time and exposed to extreme temps. This is an OEM vacuum solenoid valve made by .

Secondary Air System? | Adventure Rider

Nov 15, 2010 · Secondary air injection (commonly known as air injection, or colloquially smog pump) is a vehicle emissions control strategy introduced in 1966, wherein fresh air is injected into the exhaust stream to allow for a fuller combustion of exhaust gases.

Symptoms of a Bad or Failing Air Pump Check Valve | Autoblog

The air pump check valve works to reduce hydrocarbon and carbon monoxide emissions of a vehicle, so when it fails, the levels of these two pollutants will increase. 3. Check Engine Light is On

Genuine BMW - 11727574490 - Secondary Air Pump Vacuum Line .

This Genuine BMW Secondary Air Pump Vacuum Line (Mfg#11727574490) fits BMW E39 525i M54 2.5L, BMW E39 528i M52 2.8L, BMW E39 530i M54 3.0L, BMW E46 323Ci M52 2.5L, BMW E46 323i M52 2.5L, BMW E46 325Ci M54 2.5L, BMW E46 325i M54 2.5L, BMW E46 325xi M54 2.5L, BMW E46 328Ci M52 2.8L, BMW E46 328i M52 2.8L, BMW E46 330Ci M54 3.0L, BMW E46 330i M54 3.0L, BMW E46 330xi M54 3.0L, BMW .

BMW Secondary Air Pump, Valve & EGR | BimmerWorld

The secondary air pump and air pump valve are high-failure parts on BMWs. A typical code for air pump issues is "Secondary Air System Flow Too Low" (an F5 or F6 code on some BMWs). A failed secondary air pump (aux pump) can cause this, as well as the valve on the exhaust manifold that controls the air flow known as the auxiliary air valve.

1997 BMW 328 Secondary Air Pump: My Engine Light Is On. I .

If there is a fault for secondary air, too little flow, then I would start with inspecting the small vacuum hose going to the secondary air valve for cracks, they fail quite often. The pump itself is located just behind the right shock tower and in front of the firewall under the hood.

SOLVED: Where is the Secondary air flow pump? - Fixya

SOURCE: 97 Jetta Secondary Air Injection System Incorrect Flow the air pump is located on the engine towards the front of the vehicle and has apx. 3/4 diameter pipes running to and from it. it is apx. 2 fists in size and it is black plastic. one of the lines on top of the air pump runs to the other side of the engine towards the firewall. at the other end of that pipe is the valve. disconnect .

P0491: Secondary Air Injection System Insufficient Flow Bank 1

Secondary air injection system is commonly found among Audi, BMW, Porsche and VW vehicles, and other vehicles. It features air pump, exhaust manifold, vacuum control switch, input check valve and an electrical input circuit for the vacuum control switch, along with tons of hoses.

P0418 OBD-II: Secondary Air Injection System Control "A .

The Secondary Air System typically has an Air Pump and some tubes or plumbing to route the air. The system also has a solenoid and Check Valve(s) to control the airflow. When the engine control module (PCM) detects a faulty with the Secondary Air Injection System, it will set code P0418.