am i just missing the passenger air tube? not sure what goes there? looks like the previous owner welded it or something. the tube im holding with my finger is plugged with a bolt.

 

My first thought is the PCV line. Where does the other end go? Sorry, didn't see that last picture...as the other posts after mine here said, A.I.R. system.

 

Yep....what's left of the A.I.R.....quite a hack job.

 

lucky your the man i should have just pm'd you. you always have answers!

its upsetting to work on my car. the more i do the more hack jobs i find.

so i if i just buy the left air tube assembly do you think it would hook up? ive heard i need an air tube gasket i believe?

 

Unfortunately, it looks like you'll have to replace most of the system, if not all of it....and who knows if the A.I.R. pump is even there anymore. Good news is, plenty of guys remove their whole system, so if you want to return it to stock, you should be able to pick up the parts cheap.

 

where can i find like a diagram of this?

 

Service manual is your best bet.

 

yeah.... i guess i need to buy one. what does the air pump look like? that circular piece that connects both? like on the other side?

 

Sorry, but those ends never connected. The passenger air tube is a hard pipe from the passenger side manifold all the way around behind the engine until it gets behind the drivers side head.

That hose may be part of the PCV system, but it really doesn't look stock. I believe the PCV hoses have rubber like sleeves around them and not that type of sleeving.

I just don't recall if there is anything else back there so I'd have to look before I would know.

Peter

 

hmm let me take a look again. im gonna have to see where that cord comes from

 

That is the passenger side and yes they did connect. It looks exactly like mine except for the missing piece of metal tubing.

I suspect that inside that OEM black braided sleeving is the stainless steel metal tube that goes back around behind the manifold and terminates at the threaded fitting where one of the two A.I.R. check-valves is/was. It appears as though they slipped a piece of hose over the (now cut/broken) end so they could stick a bolt in to "plug" it. Same thing for the broken/hacked piece still remaining on the exhaust manifold only it's "plugged" with something else apparently (JB Weld?).

Edit: Did some checking and it seems that particular piece of piping is specific to '99 and '00 only (according to GM) and likely due to the way it is shaped/bent, etc. It's a "Secondary AIR Injection Pipe", Position #1 (meaning RH side) Part #12558995 and one source I checked says no longer available, but another (GMPartshouse) shows it and lists it at $57.23. I would be skeptical though and verify. The AC Delco part number for it is 219-241 and they show it for both '99 and '00 models years only as well, but a couple sources say "NA" also.

http://www.ebay.com/ctg/ACDelco-219-...Pipe-/79156583



OP: I agree with Luck, you're going to at least need that one piece of "formed" tubing and the small gasket where it bolts to the exhaust manifold. Be aware that that particular piece of tubing is going to be year-dependant, so be sure to look for one for your particular year model ('99 or '00 only). I also agree that if they hacked up this that badly, there are likely other things hacked/missing as well.

HTH

 

Yes, it's possible that piece of rubber hose is stuck over the remains of the AIR tube at the back of the engine but that rubber hose still DID NOT connect to a fitting on the manifold.

You can replace it, but you'll likely be pulling the intake to do so. There is a bolt at the back of the engine holding the tube to the back of the engine. I think the bolt goes into a hole in the drivers side head but I can't recall for sure. At any rate, it would be next to impossible to impossible to reach the bolt without pulling the intake. That could be why part of the tubing was left in place.

With that chop job I'd suspect the car had headers before you bought it.

Peter

 

I never said nor implied that the rubber hose "connects" to anything. It's NOT OEM in the first place. As I said, it likely got stuck onto the steel A.I.R. pipe to enable a bolt to be able to be inserted into it to plug it. That tube inside the sleeve however DID connect to the exhaust manifold flange fitting.

 

yess answers! after reading it two or three times i think i understand. you think if i yanked (not hard) on the rubber hose it might come out of the beaded thread/hose line? i think im going to start by order that air piece that i know i need for sure.

 

i dont think they were attempting to remove the air system. otherwise, they would have done the same thing on the drivers side tube. something lies deeper in this issue. and who the heck would remove the air system with stock manifolds?

like lionelhutz, i also think there is a good possibility the car previously had headers. that would explain the deeper issue i guess.

 

i apologize i guess i didnt fill in the info. i just swapped to stock exhaust manifolds. had obx long tubes with x pipe now going back to stock due to crappy smog issues

 

ps i have a 99 frc

but i ended up with a 01+ exhaust system as stock cats are rare in cali lol

 

so i finally had time to look at it again. looks like the black tubing does come off like a plug. and it looks like he hacked the air tube off in half. not sure if the air tube i bought from gene is all the way back or im gonna need to weld it. its still on order i guess

 

Check out the photos, by Patches and Bill Curlee, of the A.I.R. components in this thread:

http://forums.corvetteforum.com/c5-t...eck-valve.html

 

You should be OK with just the passenger side tube if the AIR stuff is still there in the drivers side. You should see a tube with a T that feeds from the AIR pump to the drivers side fitting and up behind the drivers side head. It's pretty much impossible to remove the passenger side tube without pulling the intake so it appears the PO just went the bubba route and hacked it off instead.

Peter