Can anyone tell me what this is for?

[Ruxus]

 

I'm trying to fit a snorkel. But this is in the way. What is it for? Can I get rid of it?

 

 

 

 

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[86FUBAR]

Don’t know why the actual name eludes me but that is used to help your engine heat up when cold . The metal  part is vacuum operated and is connected to the rectangular flap and when it is closed the engine sucks warm air through the round hole on the bottom that is connected to a sheet metal cover that is around the exhaust manifold.

[Jeep Driver]

Looks like a fresh air blend door to me. 

 

Why did you not take a pic of the entire thing?

 

It come up through the cowl, correct?

[Ruxus]

Its on the air intake. don't really know what cowl is?
As you can see I will have to remove it to fit the snorkel on the intake. Its supposed to sit snug direcly on the air box. Or am I being really stupid here?


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[Jeep Driver]

 Yeah, that is your air box, the foam had me confused.

 

IDK, guess you just cut it off. 

[Pete M]

it's part of your emissions setup.  if you don't have indepth inspections in your neck of the woods, it can be tossed.  

[omega_rugal]

if the engine is cold, the small flap open and the engine sucks hot air from a jacket in the exhaust manifold, it closes when the engine reaches operating temp...

 

get rid of it...

[HOrnbrod]

The OP lives in Sweden. I wouldn't recommend getting rid of it. 

[ParadiseMJ]

It's the airbox equipped with the "thermostatic" air filter rig.  The smog folks here in CA are iffy about this.  Some allow an approved air intake instead of this, but they (approved in CA) are rare.  I bought an approved 50 state tube with a K & N cone filter, but it said (on the approval rating sheet) that it was for a Renix 87 - 90 Cherokee XJ.  I smogged it when it was on my XJ and it was fine.  Then I put it one on my MJ (same 4.0, same entire set-up) and they flunked me because the paperwork did not include MJ, just XJ.  I just replaced it with the stock box and went back and passed.

[DirtyComanche]

14 hours ago, omega_rugal said:

if the engine is cold, the small flap open and the engine sucks hot air from a jacket in the exhaust manifold, it closes when the engine reaches operating temp...

 

That's assuming it still works.  I've never seen one that did.

[carnuck]

 
That's assuming it still works.  I've never seen one that did.

Mine still does. 220,000 on the truck (towed by a motorhome.


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[Ruxus]

Thanks for the answers. Think I'm gonna try to keep it. don't know how hard the inspection guys are on old cars like this though. It turns 30 this next year. Then its considered a veteran car, and you only have to inspect it every other year. I actually tried sucking in vacumhose and it did move so it might work.
Will have to invent another connection for the snorkel.


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[ParadiseMJ]

On ‎11‎/‎5‎/‎2017 at 8:01 AM, carnuck said:

 

 

 

 

Mine still does. 220,000 on the truck (towed by a motorhome.


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Suck on that vac line off the servo that runs the flap.  If it moves, it works, IF you have the bi-metal sensor hooked up at the back of the original airbox.  When the engine warms up the flap opens/closes and gives you non-tempered air (aka the warm/hot air from the manifold is cut off)

[carnuck]

 
Suck on that vac line off the servo that runs the flap.  If it moves, it works, IF you have the bi-metal sensor hooked up at the back of the original airbox.  When the engine warms up the flap opens/closes and gives you non-tempered air (aka the warm/hot air from the manifold is cut off)

I usually bypass it for summer but we have wet icy winter air that allows icing up of the throttle body.


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[Ωhm]

 

About a year ago DTA posted this picture of the shroud for the exhaust manifold. If you don't have this part then your "thermostatic" air filter won't work properly.