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  • November 21, 2024, 12:45:12 PM

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Author Topic: What are those strange flaps in the air intake? Are they needed for anything?  (Read 1919 times)

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Offline GECKO77

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What are those strange flaps in the air intake? Are they needed for anything?
« on: August 17, 2021, 08:48:57 PM »
Hello, im currently restoring an old sx4 that i bought and noticed that there are some strange flaps in the air intake , they seem to be vaccum activated... Do i need them? What do they do?
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Offline Still Pat

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Re: What are those strange flaps in the air intake? Are they needed for anything?
« Reply #1 on: August 17, 2021, 09:23:38 PM »
If they're what I think you're talking about, they cut off the cold air till the engine warms up to help it run better.
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'83 AMC Eagle wagon 258/auto.
'84 AMC Eagle sedan (4 door) 258/auto.
PREVIOUS AMCs:
'72 Gremlin X 304/3 speed
'81 Eagle Kammback 258/4 speed (Purchased new)
'82 Eagle wagon 258/5 speed (Ordered new, traded Kammback)
'86 (I THINK) Eagle wagon - BlackBird 258/auto. (Got hit/totaled)
'83 Eagle wagon - White Eagle 258-auto. (Front subframe was rotted out - sold for parts)

Offline GECKO77

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Re: What are those strange flaps in the air intake? Are they needed for anything?
« Reply #2 on: August 17, 2021, 11:34:19 PM »
Yea makes sense ,thx
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Offline MIPS

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Re: What are those strange flaps in the air intake? Are they needed for anything?
« Reply #3 on: August 17, 2021, 11:36:32 PM »
One flap is the heat stove inlet and is operated by the Thermostatic Air Cleaner valve to pull warm air in when the air temperature is too cold (helps a lot when its cold outside). The other is the vapor control door and seals the air cleaner off when the engine isn't running so evaporating gas doesn't escape.
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