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Feb 22, 2018 | 08:13 AM

mickfree

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Newbie trying learn!

I have a 99 vette and I notice I have a hose that is connected to something under my driver side headlight, lead back to the firewall but it's plugged off. Any clues??

Thx

Mick

Feb 22, 2018 | 08:41 AM

runner140*

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From: Ft. Lauderdale Fl

Quote:

Originally Posted by mickfree

I have a 99 vette and I notice I have a hose that is connected to something under my driver side headlight, lead back to the firewall but it's plugged off. Any clues??

Thx

Mick

Could be the air check valve system. Some of us had it programed out.
Just a guess. Part of the emissions system.

Feb 22, 2018 | 08:45 AM

mickfree

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Quote:

Originally Posted by runner140*

Could be the air check valve system. Some of us had it programed out.
Just a guess. Part of the emissions system.

Thanks sooo much for your reply.

Feb 22, 2018 | 09:26 PM

Vetteman Jack

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A pic here might help with an answer.

Feb 22, 2018 | 10:31 PM

striper

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From: Fort Lauderdale, Florida

The air pump is mounted in that area by the left headlight. Maybe the pump doesn't function anymore and someone did a halfassed modification to the system.

Feb 22, 2018 | 11:49 PM

mickfree

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Maybe

I bought the car used and you may be right. But I just trying understand purpose of this airbox. I another member suggested it maybe related to emissions.

Feb 23, 2018 | 12:39 AM

Yello95

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St. Jude Donor '11

Quote:

Originally Posted by mickfree

I bought the car used and you may be right. But I just trying understand purpose of this airbox. I another member suggested it maybe related to emissions.

PM Bill Curlee....he would know for sure...don't ask him about heart surgery though...submarines yes

...maybe give him some more details to pin it down

Feb 23, 2018 | 07:16 AM

mickfree

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Thanks I will take pics and post soon.

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Feb 23, 2018 | 12:03 PM

mickfree

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picture of black box

Feb 23, 2018 | 08:32 PM

#10

Mike98SilVert

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That the air injection pump.

Feb 23, 2018 | 08:59 PM

#11

mickfree

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Quote:

Originally Posted by Mike98SilVert

That the air injection pump.

ok cool I assume emissions related?

Feb 23, 2018 | 09:55 PM

#12

Mike98SilVert

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From: Bonita Springs, Florida

Yes it's emissions related. It's a pump that injects fresh air into the exhaust stream to help to burn any unburned and partially burned fuel in the exhaust to reduce tailpipe emissions. Also referred to as a smog pump or secondary air pump.

Principle of the secondary air system:

Feb 23, 2018 | 11:18 PM

#13

mickfree

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Wow Thanks for taking the time to supply this info.

Feb 24, 2018 | 12:03 AM

#14

striper

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From: Fort Lauderdale, Florida

Interestingly, that is the air pump of which I mentioned. In my own car I was having problems with the system setting codes so I had the computer tuned to delete it and removed all the components. My car still passes New Jersey inspection.

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