The mazda dealer faxed me a couple pages on parts I'm looking for but in the picture below I'm trying to identify what 13-720D is. I believe it attaches just below the bac valve to the right under where the throttle cable line attaches. I'm missing this part on my upper manifold and wanted to know if it was needed as I believe there is at least one electrical connection to it and the coolant line that comes of the bottom of the pipe labeled "Z" in the picture in two places.

Also, I wanted a second opinion on the hose in the upper left labeled 13-2081. Is this the hose that comes off the rear iron? It looks oddly shaped in the display from what I'd imagine it looks liked (I no longer have the hose as a frame of reference). I expected it to be straight up and then a 90 degree bend into the thermo wax pipe.



Thanks!

 

looks like a bracket to me

 

Sure there is a bracket there, but there's something attached to it. A buddy of mine came over with his FC and there was some hoses and wiring attached to the unit that is mounted to that bracket

 

Valve Solenoid, Air bleed n327-13-720a

according to the parts list that goes with that page.

 

13-2081 is labeled as Hose, Water Inlet, part n326-13-680a

 

That sounds good to me...thanks. I'll assume it's a necessary part and pray it doesn't cost 11ty billion dollars.

Any help with the hose off the rear iron?

 

I tihnk that might be the one that goes to the heater core thru the firewall. I have to take out my garbage anyways, I'll peak under the hood of my NA and see.

 

Yeah it didn't look right to me either. I'm guessing the hose I'm looking for isn't pictured. Thanks for checking

 

I believe its the rear housing to throttle body hose. If you query the part number from mazdatrix that I gave, they list it as R. HSG TO THRTLEBODY. Of course mazdatrix has the backwards format, 13-680A-N326

 

so that's the part I need then right? I might just order from mazdatrix if the mazda dealer can't figure it out tomorrow.

 

its like $12 from MT.

 

The part 13-720D is the valve for the AWS aka Accelerated Warm-up System. Connection Z is to the air pipe that sources air from the intake tube for both the AWS solenoid and the BAC valve.

It is not wanted or needed as it is responsible for the 3000rpm starts when the engine is cold

The hose 13-2081 is shaped like that because it must reach out from under the UIM to get to the thermo-wax.

Vince

 

Nice, good info...so where that part attaches at the pipe that runs along the top of the upper manifold do you just plug that bottom area with something? I assume cap off the 90 degree hose that comes out from the upper manifold, under the bac valve too?

 

I had to cap AND clamp mine. It shoots off the cap on WOT.