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Diverter Valve

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Old Apr 19, 2019 | 11:20 PM
  #16  
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Sorry got my numbers mixed up, I think this is right:
E3EE-9F491-C3A
 
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Old Apr 20, 2019 | 12:19 AM
  #17  
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Originally Posted by WolfMann
Sorry got my numbers mixed up, I think this is right: E3EE-9F491-C3A
E43Z-9F491-C .. Exhaust Air Supply Control Valve / Marked: E3EE-9F491-C3A (Motorcraft CX-921) / Obsolete

NOS PARTS SOURCE in Olathe KS has 1 = 913-220-5746.

There's another on ebay using the E3EE-9F491-C3A ID number. The seller screwed up the Motorcraft number, saying it's CX-291. It ain't.

btw: This valve was introduced in 1984, it was also installed on cars. So I'd suggest trying NAPA or an indie auto parts store.
 
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Old Apr 20, 2019 | 12:30 AM
  #18  
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Thank you, I'll try to get ahold NOS Parts tomorrow about the valve. I've seen the one on eBay too, I've been considering it, just seems overpriced. Supply and demand I guess...
 
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Old Apr 20, 2019 | 12:34 AM
  #19  
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Do they all essentially work the same? Whether on a car or a truck? That's good to know there's more options out there, thank you.
 
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Old Apr 20, 2019 | 12:36 AM
  #20  
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The auto parts stores seem to draw a blank when I give them the E3EE number. Is there a different number i could use that might work better? Same valve just from a different application?
 
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Old Apr 20, 2019 | 12:53 AM
  #21  
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Originally Posted by WolfMann
The auto parts stores seem to draw a blank when I give them the E3EE number. Is there a different number i could use that might work better? Same valve just from a different application?
Give the auto parts stores the Ford part number: E43Z-9F491-C and/or the Motorcraft part number: CX-921 .. Both are listed in post #17 along with the E3EE ID number.

E43Z is a 1984 Tempo part number prefix, but the valve was used on myriad 1984 and later cars/trucks.
 
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Old Apr 20, 2019 | 01:03 AM
  #22  
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I'll give them a try.
It's been a lot of good info NumberDummy, and you've given me a few new avenues to explore. Thank you for sharing the knowledge.
 
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Old Feb 8, 2020 | 03:38 PM
  #23  
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Originally Posted by WolfMann
I'll give them a try.
It's been a lot of good info NumberDummy, and you've given me a few new avenues to explore. Thank you for sharing the knowledge.
I am having the same issue. Went through the entire testing procedure. Have you ever been able to find this part?
 
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Old Feb 15, 2020 | 11:21 AM
  #24  
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In case anybody is interested you can use two individual valves instead of the combination valve. Since my bypass valve was still good I used just a diverter valve. Part number is E7TZ-9F491-B. I think motorcraft part number is cx 1208.
 
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Old Feb 15, 2020 | 11:25 AM
  #25  
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still need to make a bracket.
 
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Old Feb 18, 2020 | 04:59 PM
  #26  
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I just saw one at the yard today. Even the 84-86 carbureted sixes got them. I'll dig in my junk box to see if I have one.
 
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Old Feb 21, 2020 | 12:49 PM
  #27  
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Originally Posted by jackietreehorn
I just saw one at the yard today. Even the 84-86 carbureted sixes got them. I'll dig in my junk box to see if I have one.
I got one for the YR myself but it wasn't working either. If you have one that would be awesome. My goal is to keep the truck as stock as possible.
 
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Old Sep 29, 2021 | 11:31 PM
  #28  
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Internal components of secondary air injection diverter valve

Originally Posted by WolfMann
Hey everyone new member here, recently picked up a 1990 f150 with the 4.9L engine. Trying to clear up a code 44 and it looks like my combination bypass/diverter valve needs replacement. I'm having a hard time finding one and wondering what the story is on these? Are they not made anymore? Any chance of aftermarket parts? Been looking around online without much luck. Any help is appreciated, thank you in advance.

I believe it's a special type of compression spring but there are two of them in the valve of this kind.



Rubber gasket or seals may be replaceable if find the part or may be able to make your own.

Rubber gasket or seals may be replaceable if find the part or may be able to make your own



Can open it up by pulling the tabs out enough without breaking to open it up.


 
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Old Aug 29, 2024 | 07:40 AM
  #29  
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were you able to repair your valve after taking it apart? ie: when vacuum is applied does the valve open and hold? mine on my 87 f150 with the 5.0 is not
holding vacuum either.
 
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Old Aug 29, 2024 | 11:30 AM
  #30  
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I don't think it ever worked, possible with a better repair? I ended up deleting it.
 
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