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falconwagon62
Samba Member
Joined: January 11, 2014
Posts: 3
Location: Trenton, Ohio
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 Posted: Tue Nov 14, 2017 5:01 pm Post subject: WTH? What is this valve? |
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Prior owner took all the wiring apart...trying to put together again....what is this valve? 1970 EFI AUTOMATIC type 3 Wagon. Hoping the EFI works and it runs....Thanks....JW
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KTPhil 
Samba Member
Joined: April 06, 2006
Posts: 34003
Location: Conejo Valley, CA
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| Posted: Tue Nov 14, 2017 5:21 pm Post subject: Re: WTH? What is this valve? |
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That is an electric Auxiliary Air Regulator (AAR). It functions to increase cold idle speed and to enrichen the mixture a little.
You should connect a red wire that comes out from the same sheath as the oil pressure sender wire.
One hose goes to a nipple under the plenum (IAD), and the other goes to the air cleaner.
Last edited by KTPhil on Wed Nov 15, 2017 10:44 am; edited 1 time in total |
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Donnie strickland
Samba Member
Joined: December 21, 2009
Posts: 2403
Location: Moody, AL
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| Posted: Tue Nov 14, 2017 5:32 pm Post subject: Re: WTH? What is this valve? |
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That's your auxiliary air regulator (AAR), which brings extra air to the intake at cold start and warmup. It is electrically heated, and should have a red wire coming off of it, which should be plugged into the harness. It has two hoses, one to the air cleaner and one to the intake. Here's mine:
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71 Elm Green FI A/T Squareback
Last edited by Donnie strickland on Tue Nov 14, 2017 5:38 pm; edited 1 time in total |
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Donnie strickland
Samba Member
Joined: December 21, 2009
Posts: 2403
Location: Moody, AL
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| Posted: Tue Nov 14, 2017 5:35 pm Post subject: Re: WTH? What is this valve? |
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Man, all those loose wires...
But don't despair, we can help you put it right. Take it one step at a time and ask lots of questions. And post pics!
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71 Elm Green FI A/T Squareback |
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falconwagon62
Samba Member
Joined: January 11, 2014
Posts: 3
Location: Trenton, Ohio
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| Posted: Tue Nov 14, 2017 6:01 pm Post subject: Re: WTH? What is this valve? |
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Loose wires....loose nut behind the wheel....lol thanks for the info...i want to keep my FI, but I read everywhere, they were a pain in 1970, imagine 2017 not much better.....
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Donnie strickland
Samba Member
Joined: December 21, 2009
Posts: 2403
Location: Moody, AL
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| Posted: Tue Nov 14, 2017 6:49 pm Post subject: Re: WTH? What is this valve? |
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| falconwagon62 wrote: |
| I want to keep my FI, but I read everywhere, they were a pain in 1970, imagine 2017 not much better... |
Don't believe everything you read 
I don't know what it is about previous owners and wiring...anyway, here's the page of wiring diagrams:
https://www.thesamba.com/vw/archives/info/wiringt3.php
Keep all your questions in one thread so it's easier to keep up with things.
You'll need to find out if you have all your FI parts. But before you do that, you'll have to fix all the other wiring. You can have the diagram printed out on 11X17 paper and laminated so you can take it out to the car with you.
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71 Elm Green FI A/T Squareback |
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raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 21513
Location: Oklahoma City
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| Posted: Tue Nov 14, 2017 11:21 pm Post subject: Re: WTH? What is this valve? |
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Its a pain....to those who would rather use carbs. It got its reputation back in the day....by mechanics that were still toasting their bread in the morning in a skillet 'cause they couldn't figure out that 'lectric box thing with slots.
Bear in mind it only has 23 wires and five sensors. Its not complex....but it is a little complicated sometimes.
Modern injection if far more complicated. Just take it slow...and understand that unlike American cars of the era....there is not a single, extraneous or unnecessary wire or hose that you can run without. Ray |
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blues90
Samba Member
Joined: March 14, 2009
Posts: 1912
Location: Hollywood ,CA
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| Posted: Wed Nov 15, 2017 12:30 pm Post subject: Re: WTH? What is this valve? |
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Looks like the PO was in the process of perhaps a paint job . I don't see any reason to rip out all the dash wiring let along open up the harness covers.
AS others have said you need to get the dash wiring in order first because a good part of the fuel injection control is in the dash . |
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nogoodwithusernames
Samba Member
Joined: November 10, 2014
Posts: 599
Location: CA, USA
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| Posted: Wed Nov 15, 2017 1:11 pm Post subject: Re: WTH? What is this valve? |
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| raygreenwood wrote: |
Its a pain....to those who would rather use carbs. It got its reputation back in the day....by mechanics that were still toasting their bread in the morning in a skillet 'cause they couldn't figure out that 'lectric box thing with slots.
Bear in mind it only has 23 wires and five sensors. Its not complex....but it is a little complicated sometimes.
Modern injection if far more complicated. Just take it slow...and understand that unlike American cars of the era....there is not a single, extraneous or unnecessary wire or hose that you can run without. Ray |
Hey I still use a pan to toast bread! Whatcha tryin to say Ray?
I love the stock D-Jet FI in my 914 (same as the type 3 D-Jet) when all is well it runs like a dream but it can be frustrating when issues do come up since there are so many vacuum lines and little things to check.
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71 Squareback, 1.7l T4 w/ crank trigger fuel and spark
(Conversion thread https://www.thesamba.com/vw/forum/viewtopic.php?t=732508&highlight= or https://shoptalkforums.com/viewtopic.php?f=1&t=151375&sid=f0542d44a322d290c29d6609fac7f215 )
74 914, 2.0L w/ D-Jet
-Derek |
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raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 21513
Location: Oklahoma City
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| Posted: Wed Nov 15, 2017 9:30 pm Post subject: Re: WTH? What is this valve? |
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| nogoodwithusernames wrote: |
| raygreenwood wrote: |
Its a pain....to those who would rather use carbs. It got its reputation back in the day....by mechanics that were still toasting their bread in the morning in a skillet 'cause they couldn't figure out that 'lectric box thing with slots.
Bear in mind it only has 23 wires and five sensors. Its not complex....but it is a little complicated sometimes.
Modern injection if far more complicated. Just take it slow...and understand that unlike American cars of the era....there is not a single, extraneous or unnecessary wire or hose that you can run without. Ray |
Hey I still use a pan to toast bread! Whatcha tryin to say Ray?
I love the stock D-Jet FI in my 914 (same as the type 3 D-Jet) when all is well it runs like a dream but it can be frustrating when issues do come up since there are so many vacuum lines and little things to check. |
Actually....I toast bread in the pan too....but it's because ai am stylish and trendy.....and Iike fire.....not because I do not understand how to use the new fangled electric toaster..... 
Ray |
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falconwagon62
Samba Member
Joined: January 11, 2014
Posts: 3
Location: Trenton, Ohio
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| Posted: Fri Nov 17, 2017 6:00 pm Post subject: Re: WTH? What is this valve? |
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Good news....it runs and moves....BUT...still have work to do...seems fuel pump is not kicking on....but we are getting there....
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Donnie strickland
Samba Member
Joined: December 21, 2009
Posts: 2403
Location: Moody, AL
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| Posted: Fri Nov 17, 2017 6:41 pm Post subject: Re: WTH? What is this valve? |
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Do you have the fuel pump relay wired up under the dash?
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71 Elm Green FI A/T Squareback |
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