'92 GTP 3.4 5-spd - Right Front Part Identification

[crazyd]

I know what this is and what it does. On my C5, it is called an Air Injection Reaction pump, and it pumps fresh air into the exhaust at startup to accelerate lighting off the catalytic converter, like blowing on a fire to get it burning, to reduce startup emissions.  I don't know if this is specific to manuals or the 3.4 or even 91-93s, but I can't find any information about it in the 1992 factory service manual.  If your car has one of these, where does the pump's outlet hose connect where it comes into the engine bay near the AC compressor?

[jiggity76]

[jiggity76]

I'm just guessing here but it looks like there is 2 points of entry?  One...the area where the system goes into the front header.  The second one...up topside where that hose goes into the sensor thingy on the end of the plenum.

[jiggity76]

[White93z34]

its LQ1 5 speed only.

Pipes 3, 20 connect to the exhaust manifold

Pipe 17 connects to pipe 9 and the air pump, part 10

[crazyd]

Awesome, thanks guys.  Looks like I don't have the proper manifold to connect that pipe even if I had it. PO must have swapped it out. 

Edited 18 hours ago by crazyd

[jiggity76]

2 hours ago, crazyd said:

Awesome, thanks guys.  Looks like I don't have the proper manifold to connect that pipe even if I had it. PO must have swapped it out. 

You're welcome.  Something to investigate...these are 96 LQ1's.  This is from a random Google search of 2 - 96 Monte Carlo Z34's.  Looks like they have that same silver pipe on the front headers.  Since we know the last year for the manual LQ1 was 92/93...and these are obviously automatic cars, maybe the same or very similar setup was standard on all 96-97 LQ1's by then.  If so, this will help with the availability of possible parts prospects.

 

Edited 17 hours ago by jiggity76

[crazyd]

Interesting... didn't the manual show three ports on the exhaust manifold, and this shows just one?  The plug wires come up from below there on 91-93, whereas it was relocated to the upper left in later years. That pipe probably wouldn't work due to interference with the plug wire routing.