| Mal evolent |
Sat May 26, 2012 9:51 am |
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To link to this thread copy and paste
Code: [url=https://www.thesamba.com/vw/forum/viewtopic.php?t=513607&start=0&postdays=0&postorder=asc&highlight=]Fuel Injection Diagrams Collection FAQ[/url]
1978 FI System:
FI Wiring simplified:
AFM (air flow meter)
7 pin AFM
From AMSkeptics Double Relay Tutorial
Double Relay simplified
Double Relay Ignition on, engine off:
Double Relay Start:
Double Relay Run:
Double Relay Wire Colors:
Double Relay Plugs:
White wire is a bonus wire found on a 79 Calif?
The Fuel Flow
Injector Leak Down Test
______________________________________________________________________________________________________________________
--VACUUM HOSE DIAGRAMS
Vacuum Hoses 73-74 Carbureted
Vacuum Hoses 75
DVDA
SVDA
Vacuum Hoses to 76 1/2
Vacuum Hoses to 76 1/2 with EGR
Vacuum hoses 76 1/2 to 79 Federal:
Vacuum hose 75-76.5 and 79 CA models DVDA
From RATWells vacuum hose page
Vacuum Hoses 1
Vapor Hoses Overview
Vapor hoses T:
Aux Air regulator:
vapor hoses to carbon canister:
Pressure Regulator:
SVDA:
Breather and Decel valve:
ECU CONTROL UNIT BLOCK DIAGRAM:
https://www.thesamba.com/vw/forum/viewtopic.php?p=8575116#8575116
"The Bosch L-Jetronic Technical Instruction manual has a really good overview on that. You can find it as a PDF online and read pages 16 and 17 for more info, but it all boils down to this diagram and the fact that a basic injector time is calculated and then corrected by a given factor that is a combination of the engine condition read from the sensors."
http://www.cardiagnostics.be/-now/Educational_site...Manual.pdf
"The best block diagram of an L-Jetronic ECU I've found does not come from Bosch, but from a 1977 Datsun 280Z manual. It's for 6 cylinders, but the logic is exactly the same (just think 4 cylinders and engine temp instead): "
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| Collie |
Sat May 26, 2012 9:53 am |
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| Now THATS a sticky candidate right there!! =D> |
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| Air_Cooled_Nut |
Sat May 26, 2012 10:24 pm |
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| As always, AWESOME work! =D> |
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| timo78 |
Sun May 27, 2012 9:06 am |
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| Nice collection, thank you for compiling these together. |
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| curtis4085 |
Sun May 27, 2012 9:39 am |
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| Great work gathering the info. One suggestion would be to post the key as well so others can know what the letters mean. |
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| onion456 |
Sun May 27, 2012 5:18 pm |
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found this one in the gallery thought it was cool...
i have some stuff on my other computer too ill try n dig it up. |
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| Wildthings |
Sun May 27, 2012 6:09 pm |
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onion456 wrote: found this one in the gallery thought it was cool...
Looks like D-jet and not L-jet. :cry: |
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| Wildthings |
Sun May 27, 2012 6:16 pm |
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I find the schematic for the FI shown in the standard current track diagram to be the most helpful. Just separating out the FI part of the standard drawing would be quite helpful.
Another thing that would be great to have would be a trouble shooting chart similar to what the Vanagon Bentley has. It takes almost no thought to use the Vanagon chart, whereas using the info in the Bay Window Bentley can be trying. |
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| onion456 |
Sun May 27, 2012 6:44 pm |
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Quote: onion456 wrote:
found this one in the gallery thought it was cool...
Looks like D-jet and not L-jet.
dang, wasnt sure bout that air cleaner =)
heres a few more, probably raped from ratwells, ive found em useful.
85 - Ground
86 - Thermo time switch and ECU pin 4
86a - Starter
86b - AFM harness connector #36
86c - Terminal 15 of ignition coil (+12v)
88a - AFM harness connector #39
88b - Series resistors and ECU pin 10
88c - Aux air regulator
88d - Fuel Pump
88y - Battery +12v
88z - Battery +12v
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| SGKent |
Sun May 27, 2012 11:59 pm |
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| really nice but too bad you didn't post it in the FI sticky so everyone can find it 2 years from now. |
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| Tcash |
Mon Oct 14, 2013 8:29 pm |
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78 Calif. ECU Schematic/thanks ratwell
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| ser123ser |
Thu Nov 21, 2013 8:07 pm |
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OMG".......
I have seen a lot of this back in 2011 when I built my motor and fi system, just Ina lot of different places. Now it is all in one place.
Outstanding ".......... |
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| 74Pepper |
Tue Jan 21, 2014 4:38 pm |
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I think I just wet myself....I was hearing angels and harps flipping through these images! Converting back to FI from scrounged parts just got that much easier!
Thank you, thank you, THANK YOU! :D |
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| russwiththebus |
Tue Jan 21, 2014 7:31 pm |
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| I love it! Some I've seen, some I hadn't. Nice to have them all in one place! |
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| Tcash |
Thu Mar 13, 2014 10:09 am |
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| HerrMahnenschmidt |
Fri Jun 20, 2014 8:32 am |
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| Would it be unseemly to say -- I love you all? This thread is so beautiful I have to choke back the tears... |
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| Tcash |
Sun Dec 07, 2014 3:36 pm |
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73 Vacuum hose diagram
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| Wildthings |
Sun Dec 07, 2014 6:16 pm |
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| Shouldn't the one hose to the charcoal canister tie into the fan shroud and not the air cleaner? |
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| Tcash |
Sun Dec 21, 2014 8:52 am |
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Wildthings wrote: Shouldn't the one hose to the charcoal canister tie into the fan shroud and not the air cleaner?
Thanks Wildthings. I deleted the diagram.
Tcash |
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| Tcash |
Sat Feb 07, 2015 11:44 am |
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In the fuel injection section. Temperature switch Prt# 022 131 519.
Could not find a diagram with it.
I drew this one in. I would think it goes here, to not allow the EGR to operate when the engine is cold.
Tcash |
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