what is the smog pump?

A smog pump is just a device that pumps air into the exhaust and burns unburned fuel and pollutants. This is just an emissions thing and most people do away with them by replacing the pump with an idler pulley, or by putting in a shortbelt to simply bypass the pump. Check out the short belt setup under the tech section of this website.

Your smog pump is part of the Exhaust Gas Recirculation system. If you are facing the front of your motor it is on the bottom left below the altenator. It can be unbolted and remove all the lines that it runs to. When you do so you will see that it has a tube across the back of your heads that is bolted on you would remove that as well. There will be two open holes on the back of your heads where it was bolted on. But, dont leave the holes open you would need two 5/8" threaded plugs to screw into the holes. If you decide to do that I would most defenitely go with a smog pump eliminator pulley. It doesnt cost that much and it is much easier than trying to measure out different belts to fit your car. That way you can use your stock belt over. It is really easy to do. Good Luck!

PS. you can get that eliminator out of Summit for about $75.00

The Thermactor ("smog") system has nothing to do with the EGR system. Those two systems are separate and independent of one another.

IMO its a waste of time to mess with the smog pump. It takes about 1hp to drive it, when it is in use, which is only the first minute or two of each drive cycle, when its cold. Besides, if you ever go to sell it it, most people like all the equipment still on the car.

NoSlow5oh said:

It takes about 1hp to drive it, when it is in use, which is only the first minute or two of each drive cycle, when its cold.

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It's driven all the time, whether in bypass or diversion mode.

You're thinking of air diversion to the cylinder heads during 'cold start-up' and 'cold drive-away'.

During air diversion to the converter(s), the pump is still being driven. During air bypass to the atmosphere (@ WOT), the pump is still being driven.

i no it dosent take much hp to turn i just want a cleaner look under the hood of my car when its done. can i just buiy a smaller belt or do i need the elimenator kit??

Also it removes weight from the front of the car...The less pulleys your motor has to turn..the less drag it has...It will free up h.p.

FoxChassis said:

It's driven all the time, whether in bypass or diversion mode.

You're thinking of air diversion to the cylinder heads during 'cold start-up' and 'cold drive-away'.

During air diversion to the converter(s), the pump is still being driven. During air bypass to the atmosphere (@ WOT), the pump is still being driven.

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You must have misunderstood what I meant. The smog pump's only operation is to pump air into the exhaust through the h-pipe to help with emissions during a cold start up. It is only in use when the engine is cold because the computer uses a program file like that of a carburetor with a choke to keep the engine going, and all that extra fuel does not get burnt in the combustion process. It only lasts for a minute or two. During that point of operation, it only takes around 1hp to drive the pump. When the motor has warmed up enough, the pump is pretty much a free spinning pulley. There have been mustangs dynoed just to prove this.

If you want to remove it just unbolt the pump and disconnect the line where it meets the h-pipe. You will need to either plug up or weld the tube to keep from having an exhaust leak.

I didn't misunderstand anything. You seem to be misunderstanding the operation of the Thermactor system.

The only time the Thermactor pump is supposedly "free wheeling" is at WOT. And even then it's still pumping air. Only then it's pumping it right back out to the atmosphere.

LOL man. The smog pump shuts itself off at WOT, along with the egr, and the a/c, and everything else. I'm used to an electronic smog, it does shut itself off during normal driving. It takes about 1hp to drive. That could be considered a variance in the dyno also. So, smog pump: no horsepower loss, really take it off because of looks.

As I said, you seem to be misunderstanding the operation of the Thermactor system.

The Thermactor pump is a simple mechanical pump. No clutch (like the AC compressor). No on/off switch (like an electric pump). It's on when the engine is on. It's off when the engine is off. Get it? Got it? Good.

by taking it off will it create my check engine lite to come on or anything like that? and i can do away with the tubs that go to the heads and the pump and the hoses that run from the exhaust rite?? im not a mechanic or anything but i no some stuff bout cars but theres a thing on the hoses that conects it all it looks like a filter or sumthing what is it??

Foxy, you seem a little stern in your last post. I'm curious to know where you are getting you resources from. I've gotten mine from ford so I wanna believe you but, ya know.

Brendin, you can take off the hoses and tubes and stuff, just make sure you plug the rest really good. It will not pull the check engine light.

http://www.geocities.com/mt83rd/Thermactor_system.html

The Theramactor pump ingests air and sends it to the TAB valve. Depending on engine operating conditions, the air is A) completely dumped to the atmosphere; OR B) partially dumped to the atmosphere and partially sent to the TAD valve; OR C) completely sent to the TAD valve. Once at the TAD valve, and again depending on engine operating conditions, the air is A) sent to the cylinder heads (actually the exhuast ports); OR B) sent to the mid-bed of the catalytic converter(s).

Looks like someone is a little bit childish. Don't understand why everyone is correcting everyone and arguing with eachother about every little thing. Not everyone knows everything. That is what I thought the forum was for. To help each other not to belittle each other and argue. Everyone is entitled to their opinion and some may not know everything like others may think they do. Let just stick to helping each other.

<sigh>

I don't understand why some people can't take being told they're wrong. Instead those that post the CORRECT information are being "childish" and "belittling".

Opinions have no place in factual discussions.

059185allmine said:

Looks like someone is a little bit childish. Don't understand why everyone is correcting everyone and arguing with eachother about every little thing. Not everyone knows everything. That is what I thought the forum was for. To help each other not to belittle each other and argue. Everyone is entitled to their opinion and some may not know everything like others may think they do. Let just stick to helping each other.

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I think you hit the nail on the head. I tried to keep my posts mild. I am going to read up on the smog equipment a little more. The only thing I was wrong about is the smog pump cutting off. I will admit that. Everything else I was correct on. So, if someone wants info about the smog stuff, I'll send them to Foxy.

will removing this make amy car run diffrent??

As long as you remove it correctly by plugging up all of the ports, your car should not run any different at all. The only thing your really doing by removing it is shedding some weight off of the car, and possibly failing a smog test if your state requires one.