blocking AIR system (ticking noise)???
Thread Starter
Launching!
Joined: Jul 2002
Posts: 260
Likes: 6
From: Pittsburgh, PA
blocking AIR system (ticking noise)??? I just started getting that annoying check valve ticking noise from the AIR system. I'm not sure if I want to block it off, or drill a hole in block-off plate and put it between the header and the AIR system connection. I read somewhere that this works. What size should I drill the hole? I'm hesitant to block the system off because I'm running cats and I understand it helps them heat up faster, putting the pcm into closed loop mode sooner. Anyone try this, or have any suggestions for me?
Thanks
Matt
Thanks
Matt
Re: blocking AIR system (ticking noise)??? 
TECH Resident
Joined: Jan 2002
Posts: 865
Likes: 1
From: central TX
Re: blocking AIR system (ticking noise)??? If you decide to keep the AIR tubes, you'll most likely have to replace the check valves also to stop the ticking...
I just removed the AIR tubes...for off-road use only, of course...
Shane
I just removed the AIR tubes...for off-road use only, of course...
Shane
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Thread Starter
Launching!
Joined: Jul 2002
Posts: 260
Likes: 6
From: Pittsburgh, PA
Re: blocking AIR system (ticking noise)??? Thanks for the responses! I was going to toss the AIR system all together, but then while I was doing a search, I read that my cats would burn up quicker without the AIR system. Is there any truth to this? I'm not really sure how the PCM works but one post said without the AIR system the PCM takes longer to get into closed loop mode. Can anyone shed some light onto this subject? Thanks
Matt
Matt
TECH Apprentice
Joined: Feb 2002
Posts: 363
Likes: 0
From: tega cay, SC
Re: blocking AIR system (ticking noise)??? then just get rid of your cats too! jking...kinda
yah dude the AIR system puts oxygen into your exhaust. **** gets hotter if there's oxygen in it i guess and it does heat up the catalytic converters much faster then without the system. it won't harm them though...and so what if they do.
yah dude the AIR system puts oxygen into your exhaust. **** gets hotter if there's oxygen in it i guess and it does heat up the catalytic converters much faster then without the system. it won't harm them though...and so what if they do.
Re: blocking AIR system (ticking noise)??? Cats are only good if u are going to pass the sniffer to begin with. If not, then get a big cam, ditch the cats, and make some real noise. 
Thread Starter
Launching!
Joined: Jul 2002
Posts: 260
Likes: 6
From: Pittsburgh, PA
Re: blocking AIR system (ticking noise)??? I would have tossed the cats a while ago, but I have to pass emissions (the sniffer). It goes for inspection this Monday, so we'll see how that goes. I took the whole AIR system out last night and the car seems to stumble a bit more than it did before when cold. I'm going to ditch the cats when I save up enough money for Hooker LT's and custom true duals over the axle. Emissions testing might be the biggest statewide scam ever!
Matt
Matt
TECH Junkie
Joined: Dec 2001
Posts: 3,242
Likes: 0
From: Lakeland, FL
Re: blocking AIR system (ticking noise)??? I was thinking of removing my air system as well when I ditch my SLP headers, it does seem weird though that injecting air helps to heat up the cats quicker? I guess thats why I'm not an engineer.
Re: blocking AIR system (ticking noise)??? Hey Mike, I'm just a "dumb *** mechanic," who loves to screw with the engineers I work with every day...remember the fire triangle from school? Fire/Heat, Fuel-unburnt escaping in xhaust, and ta da O2. Now I am sure my engineers could give it to you in a very impressive, thorough powerpoint presentation-only it would take em' 6 months to gen it up.
