A.I.R. pump 2nd thread...
Thread Starter
Burning Brakes
Joined: Apr 2007
Posts: 754
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From: North Carolina
A.I.R. pump 2nd thread...
Since my first one got deleted. I will repost my quiestion with I hope a truthful answer. From the pump there is this little hose that I suppose goes down to the cats? I cant see where it goes fully. Can I chop that off or does it go into something else? With the eliminator kit, will the stock "wishbone" still be attached to hold up the alternator? Thanks.
Le Mans Master
Joined: Aug 2003
Posts: 9,884
Likes: 3
From: Magnolia Mississippi
St. Jude '03-'04-'05-'06-'07
When you delete air, you delete and plug all lines.
the bracket from the alt to the header bolt will need to be adjusted/modified to fit... do not leave it off...
the bracket from the alt to the header bolt will need to be adjusted/modified to fit... do not leave it off...
Thread Starter
Burning Brakes
Joined: Apr 2007
Posts: 754
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From: North Carolina
Instructor
Joined: Nov 2006
Posts: 189
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From: Keaau Hi
On my '89 the tube (metal) rab down to the cat. As per Agent 86's excellent suggestion I plan to use the stock "y" pipe, put the 02 sensor in the drivers collector, and have the cat tube hole welded closed. Hope this helps. Also on mime that metal tube is bolted to the stock exhaust manifold.
Drifting
Joined: Aug 2006
Posts: 1,326
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From: Los Angeles California
That sucks that threads get outright deleted instead of just locked. Along with all the arguing there was some good information in there that is lost now unless you happened to save it.
Le Mans Master
Joined: Feb 2006
Posts: 8,753
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From: Louisiana
Originally Posted by RRT vette
The A.I.R system is primarily used to inject oxygen into the main cat on start up. At start up, air is pumped into the exhaust manifolds and then changed to the cat after warm up. This helps clean up the emissions after start up. This system is not much use after the engine is at normal operating temps. Many members delete this system with a eliminator bracket or if they have headers with the A.I.R. pipe deletes.
Originally Posted by SunCr
Air is directed to the headers on startup to help light off the O2 and the oxygen in the exhaust stream also helps to warm up the CAT. Once in closed loop, it's redirected to the CAT to help oxidize NOX and HC's. Eliminate it and you may want to switch to a heated O2 (you'll need an ignition feed) and to comply with emissions, it'll need a more modern CAT.
An air system that continues to flow to the Headers after Closed Loop will be read (by the O2) as a lean condition and the ECM responds by delivering too much fuel; ie, it'll run rich. Broken header check valves will suck air into the exhaust stream and result in the same condition. An air system that doesn't divert overboard when you let off the gas (no flow to the CAT or Headers) will cause backfiring. Troubleshoot a rich condition by clamping off the hoses to the headers or simply disconnect a hose and see if there's air flowing through it. Check Valves can be removed and tested by making sure that air only flows through them in the direction of the headers (though if one is broken, it's pretty obvious just by looking inside of it). To see if it will divert, ground the diagnostic link or disconnect the TPS to set a trouble code and then listen or feel for air below the right side of the water pump at the discharge tube.
An air system that continues to flow to the Headers after Closed Loop will be read (by the O2) as a lean condition and the ECM responds by delivering too much fuel; ie, it'll run rich. Broken header check valves will suck air into the exhaust stream and result in the same condition. An air system that doesn't divert overboard when you let off the gas (no flow to the CAT or Headers) will cause backfiring. Troubleshoot a rich condition by clamping off the hoses to the headers or simply disconnect a hose and see if there's air flowing through it. Check Valves can be removed and tested by making sure that air only flows through them in the direction of the headers (though if one is broken, it's pretty obvious just by looking inside of it). To see if it will divert, ground the diagnostic link or disconnect the TPS to set a trouble code and then listen or feel for air below the right side of the water pump at the discharge tube.
Thread Starter
Burning Brakes
Joined: Apr 2007
Posts: 754
Likes: 0
From: North Carolina
RRT, from what you just posted from my understanding is that by keeping the air pump on my set up now, it is causing my car to run rich? What happens if my car is running rich? What are the problems that this causes? Thanks.
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From: WI
Drifting
Joined: Nov 2005
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From: Downriver Mi.
Yea, but Id prefer not to get a big argument going again so I am going to keep it strictly to quiestions that are imiportant here if I need any help. I dont want to start trouble and end up getting booted off for some petty personal attacks or something stupid.
RRT, from what you just posted from my understanding is that by keeping the air pump on my set up now, it is causing my car to run rich? What happens if my car is running rich? What are the problems that this causes? Thanks.
RRT, from what you just posted from my understanding is that by keeping the air pump on my set up now, it is causing my car to run rich? What happens if my car is running rich? What are the problems that this causes? Thanks.
Thread Starter
Burning Brakes
Joined: Apr 2007
Posts: 754
Likes: 0
From: North Carolina
Thread Starter
Burning Brakes
Joined: Apr 2007
Posts: 754
Likes: 0
From: North Carolina
Le Mans Master
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
Since my first one got deleted. I will repost my quiestion with I hope a truthful answer. From the pump there is this little hose that I suppose goes down to the cats? I cant see where it goes fully. Can I chop that off or does it go into something else? With the eliminator kit, will the stock "wishbone" still be attached to hold up the alternator? Thanks.
Wishbone will be gone, kit comes with new bracket, bolts/hardware for install and should accept a stock belt. You can either put caps(standard pipe thread) on the exhaust inlets or you can just remove the lines going to that valve and leave the valve. The kits come with instructions (to some degree) that are pretty easy to follow.
My question is unless you want to work on it more easily why aren't you just getting another re-man pump (may be cheaper as kits are aroung 190.00) and calling it a day?
Race Director
Joined: Sep 2000
Posts: 17,298
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From: The Top of Utah
I bought a reman pump from Checker Auto Parts for $27.95, exchange. A pump and a $60.00 cat are cheaper than the eliminator. Wait until you have kids, (if the neighbors will let you) and they can't breathe because of what you did to your air. Don't worry about what "plenty of guys" have done. Clean air starts with YOU!
RACE ON!!!
RACE ON!!!