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what part is this?

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Old Sep 21, 2005 | 07:53 PM
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bulldog3531
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what part is this?


The circle part is what I am needing to know? The truck is a 98 Explorer Sport 4.0 SOHC 2wd. Thanks for any info
 
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Old Sep 21, 2005 | 10:36 PM
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Hey Bulldog - nice post with a good picture. I am not sure about this but I am sure some one here like MrShorty can help with this. It is obviously vacuum actuated. Right on top of the 4.0 V6 SOHC manifold - come on guys - what is this thing?
 
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Old Sep 21, 2005 | 10:43 PM
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it is a variable induction system vave, something like intake runners. dont think it lasted
 
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Old Sep 22, 2005 | 06:28 AM
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Exactly what does that do? and How can I fix the little black part from popping off at the bottom?
 
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Old Sep 22, 2005 | 06:35 AM
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Thanks Jharger.
 
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Old Sep 22, 2005 | 11:33 AM
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it varies the incoming air into the engine. depending on vacuum or no vacuum, the valve opens or closes and chages intake from short runners to long runners and vice versa. havent seen that part online might be dealer item only
 
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Old Sep 22, 2005 | 11:37 AM
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So this feature must be unique to the SOHC motor then? Does it really make a difference? What is better - short runners at closed throttle and long a WOT? Obviously, WOT there is no vacuum and so this valve would not be actuated.
 
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Old Sep 22, 2005 | 11:41 AM
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Originally Posted by Jharger
So this feature must be unique to the SOHC motor then? Does it really make a difference? What is better - short runners at closed throttle and long a WOT? Obviously, WOT there is no vacuum and so this valve would not be actuated.
Short runners are better at WOT; longer runners are better at lower rpms.

https://www.ford-trucks.com/forums/s....php?p=2982895
 
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Old Sep 22, 2005 | 12:14 PM
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Thanks for all the info. Really appreciate it.
 
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Old Sep 23, 2005 | 06:55 AM
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Contacted the dealership They actually call it The Variable Intake System Motor. It is priced at $45.75. Thanks again to all
 
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