What is this?
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 785
From: Simi Valley, CA
This was a 2, 3 or 4 ported vacuum delay valve. Someone broke the top half off that contains the ports, then capped off the remains.
Which ported valve it is, I dunno...because you failed to list the engine size, CA vehicle or not.
Could be an 8A564 coolant temp valve, 9D473 EGR vacuum control valve, or a 12A091 dizzy vacuum control valve. But, these are only the Ford basic part numbers.
There are myriad different types of each, as it all depends on the application.
Sold new is CA vehicle: The DSO code on the Warranty Plate will be either 71 or 72.
Which ported valve it is, I dunno...because you failed to list the engine size, CA vehicle or not.
Could be an 8A564 coolant temp valve, 9D473 EGR vacuum control valve, or a 12A091 dizzy vacuum control valve. But, these are only the Ford basic part numbers.
There are myriad different types of each, as it all depends on the application.
Sold new is CA vehicle: The DSO code on the Warranty Plate will be either 71 or 72.
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Post Fiend
Joined: Mar 2011
Posts: 8,501
Likes: 4
From: Lynchburg, VA
Sorry
1979 F150, 351m
has a catalytic converter
DSO code is 17-Washington
I dont think its a VCV, unless this engine should have 3 of them. The EGR VCV is just out of frame and working. Theres another 4 port thats in front of the distributor, also working.
I just got the EGR hooked up and retimed the engine which has gotten it running better than ever. Performance is good, just curious what this thing is.
1979 F150, 351m
has a catalytic converter
DSO code is 17-Washington
I dont think its a VCV, unless this engine should have 3 of them. The EGR VCV is just out of frame and working. Theres another 4 port thats in front of the distributor, also working.
I just got the EGR hooked up and retimed the engine which has gotten it running better than ever. Performance is good, just curious what this thing is.
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Post Fiend
Joined: Mar 2011
Posts: 8,501
Likes: 4
From: Lynchburg, VA
Speaking of vacuum parts, the vacuum resistor which limits the amount of vacuum that reaches the distributor is missing. Autozone lists a "spark delay valve". Is that the same as the v rest listed on my vacuum diagram?
Logistics Pro
Joined: May 2003
Posts: 4,238
Likes: 21
From: Northern Illinois
That is not a picture of a broken ported vacuum switch. It is a simple vacuum fitting screwed into the intake.
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
Yep, just a vacuum fitting. It's a handy spot to plug in a vacuum gauge. Just cap it off.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 785
From: Simi Valley, CA
A 'simple' vacuum fitting screwed into the intake manifold...for what?
What genuine Ford vacuum fitting resembles what you posted? Looks to me like a delay valve missing its upper section.
The 8A564 coolant temp switch threads into this location, how many non CA vehicles have y'all non CA residents seen this part installed on?
What genuine Ford vacuum fitting resembles what you posted? Looks to me like a delay valve missing its upper section.
The 8A564 coolant temp switch threads into this location, how many non CA vehicles have y'all non CA residents seen this part installed on?
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MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
I have a 400 in a '73 Galaxie that came from the Twin Cities plant with the exact same fitting, in what seems to be the exact same spot. I will try to snap a picture of it.
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Logistics Pro
Joined: May 2003
Posts: 4,238
Likes: 21
From: Northern Illinois
Looks the same as the one posted in the first picture.
Correct, the ported vacuum switch went in the thermostat water outlet.
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