BlackC6LS3

Corvette Kid - Thanks!

Casethecorvetteman - I will have it tuned out when I have the car retuned for headers and exhaust.

A few more questions:

This is what I have pulled off so far:



Is this part of the EGR or AIR and can it be removed?



What are the the top teed vacuum line connections for?



What are these two vacuum lines for? (The two sticking out of the harness near the injector plugs.)



Thanks again,

Dave

Corvette Kid

In the first pic, I have no idea what the large item is. My car had nothing that looked like it. Everything else though, can be 86'ed I believe.
The 2nd pic, that's part of the PCV system, retain it.
The third pic, that's also necessary. It looks like it's shot. A new one was $6 full price at a dealer for my car about 3 years ago.
In the last pic, I'm not really able to discern what it is you're talking about.

BlackC6LS3

Corvette Kid - The large item in the first picture is the air pump. In the last pic the vacuum lines I speak of plug into the the teed vacuum connection on the intake.

Do you know have the part number for this? The local Chevy dealer leaves a lot to be desired when it comes to customer service.

The other thing i forgot to ask about is this round thing:



Can this be removed? What is it? Where is the other end of the vacuum hose that is connected to the bottom of this?

Thanks again,

Dave

JackDidley

That is a vac reservoir. A storage for vacuum. Keeps vac operation up when you go to WOT. No reason to delete it.

BlackC6LS3

That makes sense, thank you!

Dave

Corvette Kid

Okay, I thought maybe so but my 95's pump looked completely different from that. I don't know the part# for that little vacuum doo-dad but I just showed it to the parts guy at a Buick dealer and he brought one right out. And yes, as Spank said, that's a vacuum container and you want to keep that.

Casethecorvetteman

I think the ones you mean in the last pic (of the engine) are the 2 that connect to the 1 way tee valve, they go to cruise control and dash vent controls. (bit hard to tell though, can you circle them for us?)

BlackC6LS3

That's what they are. I knew where they connected but wasn't sure where the other end went.

Thanks,

Dave

Casethecorvetteman

No worries mate

VR'92

I think you have removed everything needed. All else should stay.

Daniel DK

The big part is the air pump, it only runs at start up afaik... i've unhooked mine without a code showing up...

Paul Workman

A tiny wording technicality to be sure, and prolly just a typing error, but, it should have read: "...certain amount of exhaust gasses back into the intake manifold to cool the combustion chamber (cooling the burn to eliminate NOx emmissions)".

Most of us know you know that!

P.

BlackC6LS3

Okay, so the car is finally back together and it throws a SES light. Ran a scan on it and its a Code 26 - CCP (Charcoal Canister Purge?). Car drives great and this code shows up then sometimes clears itself. Which item that was removed sets off this code?

Thanks again,

Dave

Casethecorvetteman

See that device there in this pic, directly under the MAP sensor and connected by a little tube to the throttle body? That is the purge solenoid. Make sure its pluged in and connected.

BlackC6LS3

That's plugged in and connected

Casethecorvetteman

Ok, well youll have to have a look along the cable and the hoses to make sure there is no damage, and check the canister behind the right rear wheel.

JA94vette

That is the charcoal canister purge valve right?? I thought it was another emissions item that could be removed. What exactly is its function? I thought it was to take the vapors from the gas tank and purge them into combustion. What will happen if this item is removed/unplugged??

Casethecorvetteman

Well im only guessing by saying so, but i dont think you will gain anything by disabling the charcoal canister. Ive never really looked into what exactly it is for to be honest. You can turn off the code in the ECM switch table on Tuner Cat with 94/95 so then it wont matter if you unplug it as far as codes go, but again like i say, i dont think there will be an advantage, and i dont know the reason for its presence. Someone will know, hopefully they will be able to tell us!!

VR'92

There's your code. As I already said in post #6 of this thread, You will need custom tuning of get rid of this code.

BlackC6LS3

Custom re-tune will come as soon as these EM long tubes show up

Just wanted to make sure nothing else was wrong.