allright i was looking at my throttle body adnd on the air intake cleaner stuff it says there is a "butterfly throttle" or sumthign like that, and when i looked in a haynes book i can clearly aslo see a butterfly valve but when i looked at my trucks throttle body, there was no butterfly thing a ma jigger... is this bad or am i worrying over nothing ???
quack

 

The butteryfly valve (or butterfly plate) is the flap that is inside of the TB. When the throttle is engaged/disengaged, it opens/closes the butterfly valve, allowing varying amounts of air into the upper intake which then gets distributed amongst the cylinders. It's the red thing with a black stripe in this pic:

 

Not to sure what would happen, but one of two things I am pretty sure of: 1) it would not run at all, or 2) it would be at WOT all the time.

If you look down the barrel of the TB almost were the TB and manifold meet you should see a brass "plate". This is the butterfly valve. It regulates how much air is comming in. Step on the gas and it will open wider.

I assume this is on a 94 Ranger with EFI? (based on your user name)

 

well at the end of the barrel on my tb i have a screen, there is not butterfly vavle, yeah my truck is efi, im pretty sure atelast?? it's a 94 ranger w/ a 4.0 and auto tranny w/ 4x4

 

Just a screen? I'm confused. Are you talking about the TB or the MAF housing?

In this pic of my 4.0L Upper Intake Assembly, the TB is the closest thing to you.

 

yes yes, im talking about the tb, my MAF is right on top of my tb, and the only thing in the "barrel" of the tb is a screen at the way end of the barrel, like right b4 it goes into the air cleaner

 

If you were missing the TP you would be at WOT all the time, can you take a pic of the part your talking about.

 

Well instead of milk......

Got Pics???

I would love to see this. Something doesn't sound right.

 

well i dont have a digi but i will call my dad and see if he can bring one from work

 

and what is this "WOT" you dudes are talking about ???

 

WOT= wide open throttle.If you know where the air filter goes them follow the black tub past MAF= mass air flow sensor to where is stops a the Engine there is a hose clamp there loseing it and remove the black hose this hose is about 2" around,What you see is the TB= throttle body look inside and you should see the butterfly plate.Hope this helps.

 

aiight thanks, but yeah i know, i made sure i checked everything out, i know were thta stuff is i just dont know where the butterfly valve is?? hwo the heck do u lose one of them lol
quack

 

You dont if your truck is running, Maybe 1 to many buds.making hard to find.LOL

 

haha, no that's not it, well i dont get it, if my truck will NOT run w/ o a butterfly valve, how the heck is my truck running??
is the butterfly valve alwayhs visible?

 

Never heard of a TB without one. That doesn't mean some place like Ford, wouldn't come up with something crazy like that.