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calo1956
Samba Member
Joined: April 18, 2011
Posts: 703
Location: long Island new york
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 Posted: Mon Sep 06, 2021 5:50 pm Post subject: Re: Help! What went wrong on my '81? |
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I have owned my 1980 vanagon westfalia for near 41 years, and have never had any issues with that white cube filter, and dont change it anymore than I would any other filter. If you wanted to eliminate it, I beleive GoWesty sell what you need to just go with the round metal one.
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Enjoy the ride....
72 bug
80 westfalia |
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wbailey2112
Samba Member
Joined: October 02, 2015
Posts: 483
Location: Grove City, OH
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| Posted: Wed Sep 08, 2021 6:37 am Post subject: Re: Help! What went wrong on my '81? |
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Had a similar event early in the spring with our early '83 Westy (air cooled). Van was running just fine. Stopped at an intersection about 5 miles from home, made a left turn and the motor sputtered and quit. It would turn over but would not start. Strange thing was that the fuel pump would run constantly unless I unplugged the dual relay. Tried changing out many of the same parts you mentioned but nothing fixed the issue until we swapped out the AFM. I was just lucky that I had a spare AFM on hand that a local fellow Vanagon owner had given me when he went from FI to carburetor. On the advice of a local mechanic I also installed a new dual relay but it seemed to be the AFM that was the issue.
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'74 Thing
'83 Westfalia |
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Scottn59c
Samba Member
Joined: December 22, 2016
Posts: 308
Location: Northern CA
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| Posted: Wed Sep 08, 2021 8:16 am Post subject: Re: Help! What went wrong on my '81? |
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| wbailey2112 wrote: |
| Had a similar event early in the spring with our early '83 Westy (air cooled). Van was running just fine. Stopped at an intersection about 5 miles from home, made a left turn and the motor sputtered and quit. It would turn over but would not start. Strange thing was that the fuel pump would run constantly unless I unplugged the dual relay. Tried changing out many of the same parts you mentioned but nothing fixed the issue until we swapped out the AFM. I was just lucky that I had a spare AFM on hand that a local fellow Vanagon owner had given me when he went from FI to carburetor. On the advice of a local mechanic I also installed a new dual relay but it seemed to be the AFM that was the issue. |
Thanks for sharing your experience. I'm still waiting for the fuel pump to arrive, but it wouldn't surprise me if the AFM was the culprit. The combination of squirrely symptoms that are not reduplicated in the same way each time had me thinking that I might have had a sensor or AFM issue.
It looks like there are a couple of air box + AFMs for sale on ebay that would fit a 1.9 early aircooled Vanagon. And that's definitely a good spare part to have, because unlike a fuel filter which any parts place can get within a couple of days, AFMs are near unobtanium. I guess that's the route I'll go next if the fuel filter and pump don't resolve my issues.
Anyone have any other leads on where to find an AFM or get mine rebuilt, potentially?
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wbailey2112
Samba Member
Joined: October 02, 2015
Posts: 483
Location: Grove City, OH
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| Posted: Wed Sep 08, 2021 10:27 am Post subject: Re: Help! What went wrong on my '81? |
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Bus Depot sells rebuilt AFMs for the 80-83 air cooled motors for $199.99 but you have to return yours as a core or if they are out of cores they will rebuild yours. They are currently trying to recover from the aftermath of hurricane Ida so it may take awhile for them to ship you one or to rebuild yours.
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'74 Thing
'83 Westfalia |
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Scottn59c
Samba Member
Joined: December 22, 2016
Posts: 308
Location: Northern CA
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| Posted: Tue Sep 14, 2021 5:18 pm Post subject: Re: Help! What went wrong on my '81? |
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Hi again guys,
I'm still troubleshooting. I replaced the fuel filter and the fuel pump and I still can't get the van started. It cranks but won't start. It was doing this intermittently for awhile, but now it just cranks without starting.
I rooted around in the engine bay for any obvious signs of distress and the only thing blatantly amiss was the "fuel exhaust relay module". I unplugged it and noted that there was something loose jiggling around in it. After I took it apart, I found that a capacitor had come off and was just floating around loosely in the relay box.
I went to the local electronics store, bought a replacement capacitor and soldered it in, but that didn't change anything.
The relay itself looks like it probably has been out of commission for a long time. Parts of the board had rusty corrosion from water that had got in there at some point or other. I cleaned things up as best as I could and sanded the terminals. I will attach pictures below.
So here's my question:
Is this thing possibly my culprit? I could find very little on this obscure part; Bus Depot and other major sellers don't appear to manufacture it. A search of the part number (P/N 071 906 069) turned up next to nothing except this thread:
https://www.thesamba.com/vw/forum/viewtopic.php?p=8600982
I'm inclined to believe that this isn't the source of my troubles, but I really have no idea. I'm just thinking about Occam's Razor and that there's probably something simpler that I have yet to see.
I'm not sure how to test this relay, nor where I'd find another if it is indeed what went wrong. What do you think? Does anyone know much about this relay and whether or not it could gradually fail and cause the problems I have described here?
The capacitor that broke off came from the "C5" slot on the board.
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pathao
Samba Member
Joined: November 01, 2012
Posts: 291
Location: Montreal, Canada
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| Posted: Tue Sep 14, 2021 6:25 pm Post subject: Re: Help! What went wrong on my '81? |
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Looks like yours is a California' spec one. That's an other beast.
Sorry I cannot really help, my thoughts
basics : compression, fuel (ratio), spark
wild guess : maybe your cat is clogged (please do not throw money on it before checking it yourself)
And Congrats! on having a vehicule born same year you do.
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1982 AC P27 - 2.0 FI FED - 091 - BA6
English is a second language to me |
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RolandD
Samba Member
Joined: January 15, 2017
Posts: 247
Location: Menomonee Falls, Wis
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| Posted: Tue Sep 14, 2021 7:26 pm Post subject: Re: Help! What went wrong on my '81? |
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Wbailly... might be on to something. For many year I ran a L-jetronic or Motronic system on my baja. In Wisconsin winters, every once in a while water would get in the flapper box and freeze it in place. The symptoms where similar to the OP, little power, the flap said little air, so little fuel was injected.
Roland |
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Vanagon Nut
Samba Member
Joined: February 08, 2008
Posts: 10379
Location: Sunshine Coast B.C.
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| Posted: Tue Sep 14, 2021 7:46 pm Post subject: Re: Help! What went wrong on my '81? |
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| Scottn59c wrote: |
I rooted around in the engine bay for any obvious signs of distress and the only thing blatantly amiss was the "fuel exhaust relay module". I unplugged it and noted that there was something loose jiggling around in it. After I took it apart, I found that a capacitor had come off and was just floating around loosely in the relay box.
So here's my question:
Is this thing possibly my culprit? I could find very little on this obscure part; Bus Depot and other major sellers don't appear to manufacture it. A search of the part number (P/N 071 906 069) turned up next to nothing except this thread:
https://www.thesamba.com/vw/forum/viewtopic.php?p=8600982
I'm inclined to believe that this isn't the source of my troubles, but I really have no idea. I'm just thinking about Occam's Razor and that there's probably something simpler that I have yet to see.
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The relay socket should have numbers for each relay pin. Are they 2 6 8 4 ?
The OXS relay under CA type engine management in this diagram from the AFC pro training manual (do you have that PDF ?):
https://www.thesamba.com/vw/gallery/pix/1708002.png
shows those pin numbers for the OXS relay.
This thread seems to confirm that what you show is the OXS relay:
https://www.thesamba.com/vw/forum/viewtopic.php?t=...y+3000+rpm
The Bay window forum can be a useful resource for your air cooled 2.0
All that said, I don't think that failed relay is the cause of your no start.
Neil.
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1981 Westy DIY 15º ABA
1988 West DIY 50º ABA
VE7TBN |
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Scottn59c
Samba Member
Joined: December 22, 2016
Posts: 308
Location: Northern CA
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| Posted: Sun Sep 19, 2021 2:14 pm Post subject: Re: Help! What went wrong on my '81? - solved! |
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Just updating things here in case anyone runs into similar issues.
The new fuel pump involved crimping on new connectors. I got them backwards, and that allowed the fuel pump to turn on (which I got it to do by switching the double relays), but not to work.
Got the van to run once I figured our my mistake and corrected it. Never underestimate your own stupidity 
We're running once again, and now it's onto looking for and remedying vacuum leaks.
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32632
Location: Reading Pennsylvania
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Microbusdeluxe 
Samba Member
Joined: July 26, 2003
Posts: 980
Location: Bellingham, WA
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| Posted: Sun Sep 19, 2021 2:44 pm Post subject: Re: Help! What went wrong on my '81? - Solved! |
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^^^What he said^^^ The + and - marks on the fuel pump are minuscular.
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'69 Squareback RIP
'65 21 window deluxe sold before the price spike, damn it.
'70 rhd bay now a taxi in South Sudan
'81 Westy sold
'89 hightop Westy Joker syncro 16" now with Bostig! |
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