i found this air hose with a screw in it..where would it plug into, what does it do?? it was under the throttle body but theres another hose thats already plugged into it.

 

it looks like the hose that goes under the thtottlebody. tha vac hose for egr operation.

 

That or it also looks like the heater valve control hose. Does your heater work? because capped off like that it sure wouldn't...

 

If it's the HVAC it would originate at the firewall.
If it's EGR it would go to the EGR Solenoid

 

my heat works and theres already one plugged into the throttle body on the bottom

 

Where does the line originate from?

 

my bet canada or mexico oh you probably don't mean it like that !!

 

 

Yeah, judging by the location of it in your pic, that's the vacuum line for the EGR solenoid. Since that's not hooked up, look on the bottom of your throttle body, driver's side, and make sure that vacuum port is plugged off. That's where that line is supposed to hook up at.

 

In Reply #5 he says there's a hose on bottom of TB. So we won't know what it is until he finds where it's originates from.
I'm with you, I think it EGR, whatever line is plugged in may be the wrong one, or he may be mistaking a plug for a hose. Wished he would have post a pic of TB bottom.
But, there's not much room under the TB, the hose connector in the picture looks too long to fit under there an elbow is what I would expect to see there.

 

it splits right off the one that has the elbow to the TB

 

I think this is what you have. From the EGR solenoid to the TB from the TB to the Purge Control valve http://www.google.com/url?source=img...3oDfR8TpVzXdjg

 

Check the charcoal cannister at the driver's side headlight/battery tray area and make sure there is a line going from that to your "T" on the driver's side, under the throttle body. If not, then you're not venting/purging your gas tank vapors properly. If there is a line there, then you're probably not hooked up to your EGR valve.

Glad I don't have to worry about all that emissions crapola here in Wyoming Not YET anyway.

 

If that diagram doesn't match what you have go to http:/www.chevythunder.com and find the one you need.

 

looks like it should go to your charcoal canister my T/A has a small plastic tube inserted in the end of hose similar to that then it continues on with rubber hose to the canister.

 

it kinda looks like the hose for the smoke pump solenoid? Thats the same thing we did when we deleted it

 

That's a thought Joey, Is your EGR valve missing?

 

smoke pump solenoid , lol

 

Haha hey i totally forgot the name.And it was last night after i was up for hours,i was delusional

 

pretty sure the EGR is still there. but theres not enough slack to get to the canister.

 

Where does the other side of the Tee go/come from?
Did you find a vacuum routing diagram that match what you have?
This is the diagram in AllData.com for my '88 5.7L TPI, and it's how I have mine connected.

This TSB explains why some camaros have the valve on the line going to the TB as in the first diagram I posted and others on the tank vapor line.

TSB 88-298-6E
Some 1988 Camaro models with V-8 engines (RPO L03, LB9 or L98) may exhibit a "whining/whistling" type noise coming from the rear of the vehicle. This condition is most apparent when the engine is shut down after extended city stop and go driving, or operation at high ambient temperatures.

To eliminate the possibility of this occurring, an interim production change to the evaporative emission control system (EECS) was implemented on January 29, 1988.

The VIN breakpoint for this change is noted below:

Camaro - JL145359

This change terminated usage of an in-tank pressure control valve which was part of the fuel tank sender assembly, and initiated usage of an underhood externally mounted tank pressure control valve.

Service fuel tank sender assemblies available from GMSPO are of the second design configuration without the in-tank pressure control valve feature. When replacement of a fuel tank sender assembly is required on vehicles assembled prior to the above indicated breakpoints, it will be necessary to install a fuel tank pressure control valve kit, P/N 10113082, in the existing hose assembly connecting the vapor carbon canister to the evaporative emission chassis pipe.
The instructions for this installation are included in the applicable fuel tank sender assembly service kits indicated below by engine RPO. That is what you see in this diagram

 

ok guys it comes from this part in the pic and theres an electric plug into it.

 

That's the EGR solenoid.

 

^ That is your EGR vacuum solenoid, so the hose that's blocked in your original post should be getting intake vacuum. Likely blocked off for an EGR delete.

 

so what do i do??

 

Ok, now we know it's the EGR solenoid. The shorter of 2 hoses goes to the EGR valve, the other goes to the bottom of the TB.
Your EGR is disabled because no vacuum is being supplied to the solenoid. Are you trying to put things back as they should be?

 

what does the EGR do, what happens if i delete it?

 

It's for reducing NOx emissions which happens at high cylinder temperatures, it does this by recirculating a small amount of inert exhaust gas into the chamber which lowers the temperature enough to reduce NOx.
Some say they can pass emissions without it, others say no, I've tried and mine doesn't pass, but not all cars are the same so it's up to you if you want to delete it.
I have yet to hear about anyone having to pass a visual so I hear many have delete the EGR, and the Air Injection Reaction Pump.
If you decide to active it again do not use intake vacuum the EGR valve is designed to use TB ported vacuum which is vacuum created before the throttle blade not after it which requires part throttle rpm around 2000 at this rpm the intake vacuum is decreasing and wouldn't be strong enough to operate the EGR valve.

 

thanks but where do i hook it up i see no place for it?