The secondary air injection pump also referred to as a smog pump or SAI pump is responsible for lowering the number of carbon emissions that come out of the tailpipe of a vehicle. The pump lies after the exhaust manifold and before the catalytic converter of the vehicle and it can reduce carbon emissions by pumping fresh air from outside into the exhaust stream.

By the time fumes leave the tailpipe, there are fewer hydrocarbon pollutants in them. This promotes a safer environment by cutting down on air pollution outside. If there is ever a problem with your secondary air injection pump, then more hydrocarbon pollutants will be in the fumes which come out of your tailpipe. They can make your life rather difficult if you do. Secondary air injection pump failure is easy to recognize if you know which symptoms to watch out for.

One of the early symptoms of a bad secondary air injection pump is the Check Engine warning light turning on. The engine control unit can automatically detect when the secondary air injection pump has a problem. Since the functionality of the air pump impacts the engine, any problem with it will activate the Check Engine warning light on the dashboard.

To confirm the actual cause of the check engine light, you will need to use a car code reader to retrieve any error codes that were stored. The purpose of the secondary air injection pump is to reduce hydrocarbons in your emissions system. So, if you have a bad secondary air injection pump, then it means your emissions system will be allowing too many hydrocarbons to be released into the atmosphere.

Not only does this spell trouble for the environment, but it also spells trouble for whenever you get an emissions test. If you happen to live in a state which requires emissions testing, you will fail the test if your secondary air injection pump is bad. A faulty secondary air injection pump will cause problems for the air-to-fuel ratio in your internal combustion engine.

If this ratio is too lean not enough fuelthen your engine will have trouble generating speed whenever you step on the gas pedal.

Poor acceleration could be caused by several mechanical issues, but a bad secondary air injection pump is certainly one possibility. 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. If the pump is not replaced, the engine may continue to stall at the worst possible times.

When your engine is idling, check the tachometer and see what the current RPM is. But in situations when the secondary air injection pump is not working, you can expect the RPM to drop. This may cause the car to vibrate or even stall as noted above.This gauge flip-flops more than a politician during election season. Some report that the gauge says "empty" after a fill-up, while others report the gauge says "full" when they're running on fumes.

Either way, there's one thing everyone seems to agree on: the darn thing is just wrong. Unfortunately for frustrated owners, no recall has been announced. P Water in pump. Replaced check valve and pump. Worked until my first winter, then check engine light came on again. What dick thought to put a pump near the ground????

We had the check engine light illuminate and when I checked the codes it listed a issue with the secondary air pump system. A simple enough test is to disconnect the tubing that normally feeds the secondary air pump check valve. This is a valve that makes sure that the airflow only goes in one direction.

Our issue turned out to be that the valve seized in the closed position. When you run the engine at start-up with the hose disconnected you can 1: See that the pump it throwing air down the hose.

Upon swapping out the bad with the new the engine stopped giving the trouble code. I have learned that these Trailblazers are prone to this type of system problem.

Best of luck! If it wasn't one problem it was another. Once I fixed something then something else went wrong. I cannot get a break. I thought this was a good purchase but as soon as it went out of warranty everything is going wrong.

I replaced the secondary air injection system, but that still did not fix the problem. It is one big headache with my check engine light on constantly.

2005 chevy trailblazer secondary air injection pump

It really gets on my nerve I hate seeing that orange light every day. I just wish it would go off and stay off. It will be costly to get it fixed seeing how I have replaced the secondary air pump and it still is not fixed.

Secondary air pump failure also meant changing out a couple other parts.

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GM admits to the design flaw pump accumulates water and fails, because of pump placement at the BOTTOM of a runand has changed the design, but will not cover the cost of parts for the failure when it occurs - and the parts on this one are expensive. The most aggravating part is knowing that if it failed once because of design flaws, it will fail again for me or whoever I foist the car onto.

Thank god for the Bank of Mom to float me a short term loan so I can drive to work at corporate America. Another example of a corporation's refusal to accept responsibility for its own mistakes. Another electrical issue!!!!!!!

Who is the dip sh! Nice job in placing the air pump at the lowest level on the frame!!! Good job a-hole. There is no way water will condense in the pump and freeze. There is no way water will be blown into the intake and f up the throttle body.

I've fixed this twice already!!!!! Nice design. No more Chevrolet for me!!!!!!For dependability, more economical pricing and clean lines, choosy vehicle buyers choose cars produced by Chevrolet. When it comes to luxurious interior design and economical style vehicles manufactured by Chevrolet pass the test.

When a problem crops up or a part needs to be fixed, don't try to save money with a second-rate component. A Chevrolet Trailblazer deserves the correct parts to deliver full power.

Your Chevrolet Trailblazer is rugged enough to dominate any terrain, but requires first-rate quality auto parts in order to drive to your destination. Rough and ready trucks including your mountain-climbing Chevrolet Trailblazer were manufactured to take a pounding on or off the grid but in return they need proper upkeep and rugged parts to continue overcoming the world's rugged hills.

Your fine Chevrolet was designed with the highest quality and craftsmanship; it ought to have new replacement or OEM parts of a similar top level of value. Your car is outstanding because it has high performance and great style, and to keep it running in top condition you'll want the acme in quality parts. You selected that high-performance vehicle for its high-end engine power and performance, support your decision and buy outstanding new parts and accessories.

A Chevrolet Trailblazer Air Pump is an emissions control device that recirculates combustion products into your car's emissions system. For the exhaust system to comply with federal emissions regulations, a Chevrolet Trailblazer Air Pump is critical. Without the Chevrolet Trailblazer Air Pump, your emissions system could not use the system's catalytic converter, and might be regarded as illegal in most states.

To keep your Chevrolet running like a champ, be certain you get the best Chevrolet accessories from a reliable supplier.

No matter whether you own a smokin' hot rod or everyday Detroit metal, we have the parts you are searching for right here. If you want a high level of service from your car or truck, you know that good parts are part of outstanding performance - PartsGeek.

They are available for the following Chevrolet Trailblazer years:, 09, 08, 07, 06, 05, Some times these are hard to find parts. Not at partsgeek. Part worked great and now car is back on the road with my new smog pump. The purchase of this pump was very simple through the website,the price is competitive and the delivery timetable was correct but the shipping costs drives the cost up.I am showing a p code.

I changed the fuse, air filter, secondary air check valve and secondary air injection pump and relay. I erased the code. After driving thirty two miles engine light came back on and it is reading code p again. Do you. Good morning. Do you have a scan tool that can activate the secondary air system?

There are tests that need to be done to find the failure. Can you here pump run when first started? Did you clean the passages in the head? Was this answer. I only have a regular code reader.

Yes I cleaned the passages in the head and yes the pump runs when I start it. Like I said I changed the check valve and installed a new air pump and relay, the only thing I havn't tried is changing the hoses Was this answer. Ok, make sure there is air blowing into the head. Remove the hose at te check valve and be sure a good volume of air is coming out. Did you use new or used parts? Roy Was this answer. All new parts. Okay, the code is for voltage issues.

I attached a chart for you to view.

2005 chevy trailblazer secondary air injection pump

It would help a lot if you had a real scan tool that could read all the live data. Roy Image Click to enlarge. Thanks Roy, actually the scan reader I have does read live data. I did go ahead and changed all fuses and relays that pertain to the secondary air system.

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The only thing I have not changed was the hoses. I read that before. As I stated before, this is not a component issue it is a voltage issue. You will need to check the voltages at all points to verify voltages and looking for any wiring issues such as damaged or broken connectors and wiring Roy Was this answer. Hi Roy, We emailed each other a couple of weeks ago concerning my chevy trailblazer throwing a PO code.

You told me that it is not a component issue.

Signs of a Bad Secondary Air Injection P0418 P0411 P02445 P0410 Failure Symtoms

You feel it is a voltage issue. Well I took my trailblazer to three different auto mechanics and they all have checked my voltages and wiring etc. To say the least, all three service centers are completely stumped. Everything checks out fine. From all of their experiences they told me that changing the air filter, the secondary air injection check valve, the secondary air pump, the purge valve, and changing all fuses and relays along with all the voltage and connectors checking out, they find it hard to believe I'm still throwing the P code.There are several ways to fix the secondary air injection system in a Chevrolet trailblazer.

The most common fix is; changing the air filter. The exhaust system diagram, for your Chevrolet trailblazer, can be obtained from most Chevrolet dealerships. The diagram can also be obtained from most auto-parts stores. The secondary air injection system is used to heat you vehicle's catalytic converter to temperatures suitable for burning off harmful emission gases. Without knowing what is wrong with the system there is no way to determine the cost. Replace the check valve on the secondary air injection system on the passenger side.

Asked By Curt Eichmann. Asked By Leland Grant. Asked By Veronica Wilkinson. Asked By Daija Kreiger.

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How do you fix secondary air injection system for Chevrolet Trailblazer? All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply. Ask Login. Chevy Trailblazer. Asked by Wiki User. Top Answer.

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Wiki User Answered Related Questions. Where is the secondary air injection system located on a Chevrolet s10? Where can I find a diagram for a Chevy Trailblazer 6cyl exhaust system? Is your Chevy Trailblazer fuel injected? The secondary air system pump is on the driver side below the battery.

Secondary Air Pump Failure

Code p on Chevy Trailblazer? Trouble code P means:Secondary air injection system malfunction.P is a general OBDII trouble code, which means that it has the same meaning for the Chevy Trailblazer as it would any other car or truck.

2005 chevy trailblazer secondary air injection pump

By definition, the code is letting you know that the ECM has detected incorrect flow in the secondary air injection system. The secondary air injection system injects air into the exhaust to help lower emissions. Most of the time, P is going to be caused by a failure in this pump or the one way check valve.

But there can be other reasons the code is thrown as well. P can cause a few symptoms, and can affect the drivability of your Trailblazer. The most common symptoms include:. Typically, there are three main components to the AIR system. They are the pump, hoses, and one way check valve. All of this is electronically controlled, so checking the fuse to it is a great place to start. A good scan tool will allow you to command the AIR pump on.

The most common cause of P is going to be the one way check valve failing. When it does, it allows moisture into the pump. This moisture can freeze in the winter time. If frozen water does freeze up the air pump itself, it may blow the fuse to it.

This fuse is typically under the hood of the vehicle. It only takes a second to see if a fuse has been blown. The AIR pump itself is the most common cause of P They are relatively affordable. If they are no longer accepting instruction from the ECU, P will be thrown. Look for damage to the exhaust system.

P in the Chevy Trailblazer is not likely to cause the vehicle to break down, but can affect drivability. If there is anything that you would like to add, please leave a comment below. Good luck!No problems at all! I am ordering my 90 degree inlet today from partsgeek! Great to work with. The purchase of this pump was very simple through the website,the price is competitive and the delivery timetable was correct but the shipping costs drives the cost up.

I think any purchase over 50 dollars should be free of shipping. Close X. Call To Order: Air Cleaner Assembly. Air Filter. Air Filter Housing. Air Mass Sensor. Air Pipe Gasket. Air Pump Check Valve.

5 Symptoms of a Bad Secondary Air Injection Pump

Air Pump Check Valve Gasket. Air Pump Control Valve. Air Pump Hose. Carbon Canister. Cold Air Intake. EGR Valve Gasket. Intake Manifold. Mass Air Flow Sensor. Mass Air Flow Sensor Connector. PCV Hose. PCV T Fitting. Purge Valve. Secondary Air Injection Check Valve. Secondary Air Injection Pump.

Secondary Air Injection Relay Connector. Throttle Body Gasket. Vapor Canister Purge Valve Connector. Vapor Canister Vent Hose. Vapor Canister Vent Solenoid. Vapor Canister Vent Valve. Body Electrical. Chemicals and Fluids. Climate Control. Cooling System. Drive Belts. Engine Electrical. Engine Mechanical.

2005 chevy trailblazer secondary air injection pump

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