Removing all the smog pump equipment created a lot of extra space on the passenger side of the engine compartment and saved about 10lb in weight. You might gain 2rwhp. Here's my belt routing with the smog pump eliminated: The belt length required with stock pulleys is 90.0-90.5".
Do I really need a smog pump?
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.
What is the purpose of a "smog pump"?
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.
What is smog and how dangerous can it be?
What is Smog? Smog is a harmful mixture of fog, dust and air pollutants such as nitrogen oxides, volatile organic compounds, etc. which combine with sunlight to form a dense layer of ground-level ozone. Ozone present high in the atmosphere is good, but when nearer to the ground, it can cause irritating health effects.
What are the harmful components of smog?
Smog can also contain other harmful components such as nitrogen oxides, volatile organic compounds, sulphur dioxide and carbon monoxide. As the colour of smog is determined by the suspended particles which compose it, smog is sometimes colourless.
Will a car run without a smog pump?
Which begs the question: Does a car need a secondary air injection system to run? Strictly speaking, no, it doesn't. If your car doesn't have a smog pump, a couple things can happen.
Does a smog pump affect gas mileage?
Decrease in fuel efficiency A dirty air pump filter can also have an impact on fuel efficiency. The restriction in airflow from a dirty filter will upset the vehicle's air-fuel ratio tune, and cause the engine to use more fuel to move the same distance and speed as would be required with a clean, free-flowing filter.
What does the smog pump do?
Pump Type: The Air Pump, or Air Injector Reactor (AIR), system design is commonly referred to as the smog pump. The smog pump is responsible for supplying fresh, pressurized oxygen into the exhaust stream near the exhaust manifold. The spinning vanes of the air pump forcing air into the diverter valve accomplish this.
Can you drive without secondary air pump?
Technically speaking, you can drive without a secondary injection pump. However, doing so is not advised. What is this? This stems from the fact that a faulty secondary injection pump can cause a host of drivability-related issues, most of which can vary significantly in severity, on a case-by-case basis.
How do I know if my smog pump is bad?
One of the first symptoms of a bad or failing smog pump is a rough running engine. When a smog pump fails the finely tuned air-fuel ratios can be upset, and it will negatively affect the performance of the engine. The engine may have trouble idling, and may drop in engine speed, or stall when the pedal is pressed.
How do you bypass a secondary air injection system?
11:4019:06Gen-II Secondary Air Injection Bypass Module - 2007-2020 Tundra 5.7LYouTubeStart of suggested clipEnd of suggested clipThis is the 5.7 4.6 liter version. You've got one 6-pin connector - they'll connect to our bypassMoreThis is the 5.7 4.6 liter version. You've got one 6-pin connector - they'll connect to our bypass unit. Here nice click and then you'll notice. You've got four other connectors.
Can a secondary air pump cause a misfire?
Can a Secondary Air Pump Cause a Misfire? Yes, a misfire is a common sign of a faulty secondary air system. If the pump isn't working properly, there will be too much fuel and not enough oxygen in your vehicle, which often results in a misfire.
What happens when air injection fails?
If you do not have an air pump, there is no oxygen getting into your exhaust system, which means that it won't burn any fuel. This results in very high levels of carbon monoxide emissions from the tailpipe and could potentially damage other engine components due to excessive heat.
What does secondary air injection do?
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.
How important is a secondary air pump?
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. This is necessary since a vehicle engine is never 100% efficient in the combustion process.
Does the secondary air pump run all the time?
During a cold start, the secondary air pump may only be in operation for a maximum of 90 – 120 seconds. The secondary air pump is not designed for continuous use!
Can I drive with a P0491 code?
How serious is the P0491 code? This DTC is less serious than some, but it can potentially pose a danger if the vehicle stalls while you're driving.
Will a new water pump improve gas mileage?
Upgraded water pumps are one of many components that engine OEMs are putting to work to improve fuel economy. The water pump is one of the major components in the cooling systems, and the cooling system can impact fuel economy and the longevity of the engine if it's not cooling correctly.
Does a cooler engine get better mpg?
Waterless Coolant Improves Engine Life, Boosts MPG 10 Percent.
How does cooling system affect fuel system?
More than half of the energy in vehicles is lost as heat to the different cooling systems (engine cooling system, air conditioning, frictional components cooling) and exhaust gas. Reducing the amount of energy lost in vehicle cooling systems will enhance the fuel efficiency of the vehicles.
What happens when secondary air pump fails?
If your secondary air injection pump has failed, you may notice that the catalytic converter is not working as well as it should. This problem can lead to a loss in power and performance from your engine. The catalytic converter is the engine's first line of defense against harmful emissions.
Why remove the pump from a CAT?
Removing the Pump, will cause your o2 to foul faster, which will also cause your CAT to Fail faster, both of wich will trigger annoying CEL's ( Check Engine Light). ... If you don't have Emissions in your State, and Won't have it soon, might as well get rid of the other stuff, and have those items flashed out of your Chip/ECM to keep the light off (Or a cheaper way would be to just remove the CEL Bulb, but beware that you can run into other problems that you may need the light to warn against)....
Is an air pump legal?
AIR pump =Legal, but less power just because your engine must turn another pulley. There should be no temp sensor, however it may give bad readings to the O2 sensor, since if you take it off there will be less O2 in the exhaust stream. It may not give you much power to remove it, but may make it run lean all the time if you remove it. Easiest way is to not mess with it unless you know how to modify tbi stuff. (but it's not hard to learn)
How does a smog pump work?
The smog pump blows air up stream to the exhaust manifolds when the engine is cold. This adds oxygen to the hot exhaust, which has a lot of unburned fuel left due to cold operation. The hot fuel and oxygen meet, then burn, cleaning up the leftover fuel before it comes out of the tail pipes.
Does removing a fuel pump affect driveability?
Now what other than a slightly extended warm up does this do for driveability? NOTHING. It will not affect the way the car runs at all. Removing it will make no difference in performance, fuel mileage, or anything else. The EPA does not care for it, but Oh Well Too Bad. Over 25 years it does not matter to the Feds. Removing the pump is a no harm, no foul operation. If you like the look, go for it.
Why do we need a smog pump?
Remember, smog pump systems were designed to introduce clean air to the engine exhaust to help unburned hydrocarbons to continue to be burned as they travel down into the exhaust system and ultimately out the tailpipe. So by de-veining your smog pump you are altering the original emissions control systems, and none of us want to cause more global warming. So you will need to make a decision to de-vein or rebuild, the process is similar no matter which method you choose.
Why do smog pumps spin?
The reason some people chose to de-vein their smog pumps is that over time the smog pump can fail internally and make noise. Or, more specifically, the diverter valve can fail and cause a backfire on deceleration that could damage the exhaust system.
How to remove a bearing from a pump?
To remove the bearing from the housing, the bearing will need to be cut away. To cut the front bearing out, using a Dremel tool, work from the inside of the bearing towards the outside of the bearing and slowly whittle away at it until you get to the aluminum housing. The remaining pieces of the old front bearing can then be picked out of the aluminum housing. Clean the housing and press a new front bearing into place using epoxy to reattach the bearing to the pump housing. After the epoxy dries, peen the edges of the front bearing into the aluminum housing so the front bearing will not move or try and rotate while the pump is running.
Who makes the front bearings for GM smog pumps?
Most of the front bearings used in these pumps were made by New Departure, which was owned by GM , and is now out of business. National Bearing offers part number NTN-6203LLBC3/EM that will work as a replacement front bearing for the majority of GM smog pumps. You will find some of these front bearings are identical to the alternator front bearing, except for the grease shields.
Can a smog pump be de-veined?
Making the smog pump non-functional will not affect the driveability of the vehicle, and once the smog pump has been de-veined no one will be able to tell that the pump has been turned into a non-functional unit.
What is a smog air pump?
The smog air pumps were designed to pump air into the exhaust manifold to burn continue the burn off of hydrocarbons from the exhaust stroke of each individual cylinder inside the exhaust manifold. The cam timing was normally a touch retarded to encourage this. You can remove the air pump, the air manifold and the air lines. Note that it’s technically a violation of the Federal clean air act of 1968 if you do this. Metal threaded plugs are available from mail order speed shops to plug the holes in the exhaust manifold.
How much does it cost to get a hot smog?
Around here in SF Bay Area, the going rate is around $200–$300, though anything with performance mods will cost a lot more than that. I don’t condone going that route, but if your only choice is between cheating and eating Kibbles three times a day for the rest of the year, it’s an easy decision for most people to make.
Why do we need air pumps?
The air pump was designed to inject fresh air into the exhaust stream to oxidize fugitive hydrocarbons which escaped the combustion process in the cylinders, and to reduce hydrocarbon emissions during cold start conditions. Primarily used on American cars, because domestic automakers in these days always looked for the most backward, penny-chiseling, half-assed solution to a regulstory mandate.
Why did they pump air into the exhaust stream?
They pumped air into the exhaust stream n order to burn off gases that did not burn in yhe combustion cycle.
How to keep EVAP monitor from running?
In case of a check engine light caused by EVAP faults, it’s often possible to keep the EVAP monitor from running by not letting your gas tank get below 1/4 or 1/5th full. Depending on the age and fuel type, you’re allowed one or two “not ready” monitors as long as catalytic monitor shows ready.
What is the purpose of air in a car?
The purpose of an Air Injection Reaction (AIR) system is to introduce more oxygen to the exhaust gas to help with Carbon Monoxide and Hydrocarbon emissions. A major strategy on a later vehicle is to bring the catalytic converter up to operating temperature. An AIR system does not “cool the exhaust”.
What happens if a pump fails?
If the pump fails, cars run rough, and dont idle well.
