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little_waters
Samba Member
Joined: July 15, 2015
Posts: 43
Location: Vancouver
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 Posted: Thu Aug 10, 2017 2:11 pm Post subject: Will a California AFM work in a Federal? |
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I got my hands on two AFMs from a California of the same year (1981), mines a federal. They were cheap so I snatched them up as spares or figured I would just sell them if I couldn't use them (also got 2 ECUs as well for a california but I assumed those won't work in my van).
I've seen some posts about people with california engines putting in AFMs from a federal but not the other way around. I'm curious if this would work in a federal engine? They are both 7 pins (my old AFM and the new ones), look identical but I know things aren't always what they appear 
Sorry if this topic has already been discussed, I've searched through the topics and didn't see anything on this specifically.
Thanks! |
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dlb154
Samba Member
Joined: December 27, 2006
Posts: 359
Location: Reno, NV
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| Posted: Thu Aug 10, 2017 3:48 pm Post subject: Re: Will a California AFM work in a Federal? |
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Just my guess but I'd say yes it should work in either California or Federal version vehicle. The AFM is a sensor/meter. The ECU uses the meter output to adjust the fuel mixture. If there is any difference between CA emission controls and Federal emission controls, it should be at the ECU, not the sensors.
- In the "smarts" not the "parts."
Last edited by dlb154 on Thu Aug 10, 2017 4:47 pm; edited 1 time in total |
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djkeev
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Joined: September 30, 2007
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Location: Reading Pennsylvania
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little_waters
Samba Member
Joined: July 15, 2015
Posts: 43
Location: Vancouver
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| Posted: Fri Aug 11, 2017 11:06 am Post subject: Re: Will a California AFM work in a Federal? |
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I've been told by a supplier of remanufactured AFMs that a 77-79 AFM from a bus will also work in the aircooled vanagons even though it's not listed as being compatible.
Curious if anyone has successfully used a california afm in the federals. Is there a known difference between the two AFMs that would cause it to not work? |
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Vanagon Nut
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Joined: February 08, 2008
Posts: 10379
Location: Sunshine Coast B.C.
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| Posted: Fri Aug 11, 2017 12:05 pm Post subject: Re: Will a California AFM work in a Federal? |
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| 100tacos wrote: |
I've been told by a supplier of remanufactured AFMs that a 77-79 AFM from a bus will also work in the aircooled vanagons even though it's not listed as being compatible.
Curious if anyone has successfully used a california afm in the federals. Is there a known difference between the two AFMs that would cause it to not work? |
i was googling around on this then my browser quit; lost the links. One led to a page showing a copy of a Bosch catalogue. For 80-83 2.0 Vanagon engines, it showed at least 3 different part numbers for the AFM.
This link may have some info for you
http://ratwell.com
And somewhere in this web site is an explanation of the AFM, adjustments one could make to it etc. :
http://www.itinerant-air-cooled.com/index.php
An AFM rebuilders point of view will be somewhat different than the end user or mechanic; e.g. for the 2.0, they see a core that can be rebuilt to whatever specs. Yes the various 2.0 AFM's may fit, and "work" but there could be subtle differences based upon the ECU's needs.
Neil.
_________________
1981 Westy DIY 15º ABA
1988 West DIY 50º ABA
VE7TBN |
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Vanagon Nut
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Location: Sunshine Coast B.C.
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