SS2001SS

I was replacing the front bumper cover on my 2004 Z06 and found a wire connector and what looks like a vacuum line behind the cover on the left side.
Both were not connected to anything. Anybody know what they are?
I didn't get a picture but I've highlighted it in one I found:

grantv

Any chance you could make the picture smaller?
From what I can see its likely the AIR pump.
​​​​​​P.S. the vacuum hose should be traced and capped upstream, or at least where it sits depending how picky you are. Pretty safe bet you have headers?

huesmann

Seconded. It's your AIR pump. The hose should go into the harness wrap that goes up towards the battery area.

ecrouse

Definitely secondary air injection pump, just replaced mine. The other end is a bear to get at. It's up on top of the the inner fender, accessible through the access panel in the passenger wheel well but far enough up that you can only feel it without removing the whole fender.

mike venth

Here is a picture of my 01 coupe old ex.sys, (replaced w/headers) and in the right top corner you will see the secondary air injection plumbing..Had trouble couple times with the check valves, kicking on codes etc. Long story short, just removed all of it.. Had it tuned out. problem solved..

SS2001SS

Thanks for the replies. I'm going to assume the shop that did the headers and tune removed the air injection stuff.

grantv

A fair assumption, except they left what you found. I'd still cap the vacuum line to be sure.

SS2001SS

Yeah, I will trace it down and make sure it's capped. Thanks

mike venth

Here are some pics, The pump only comes on when first start and only runs for a few seconds. I think if you turn on the key you will here it run??



runs from pump to a T then to both sides of the engine



there is one bolt on back on the driver side<br/>of the block





check valve these were my problem so removed the system and tuned out

SS2001SS

Yeah, I didn't see any of that.

Vetteman Jack

Thanks for all the info and the pics.

huesmann

Here's a better pic of what you should see in the area of your yellow circle, stolen from Bill Curlee:

SS2001SS

Yep, mine was removed at some point. Thanks for all the info and pics.

huesmann

Gonna assume your car has a tune so that the codes for the AIR pump's absence were tuned out, otherwise you'd be throwing codes come emissions inspection time.