IACV Nipples - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

*XperienceM5G* · 04-30-2009, 08:10 PM

Sorry this questions has probably been asked before but I searched the forum and really couldn't find what I was looking for.

Anyways could anyone help by telling me where the two nipples on my IAC valve connect to? I have an 89 240 with a blacktop SR. The IACV is connected for the most part, looks clean, but the two nipples next to each other are not connected to anything. Any help would be awesome as I'm at a bit of a loss.

garagelu · 04-30-2009, 08:13 PM

those are coolant ports. They go down to the coolant hoses under your intake manifold.

*XperienceM5G* · 05-01-2009, 04:10 AM

okay, i'll check it out. thanks

didderson · 05-03-2009, 11:14 PM

You don't need to connect them if you just block off the coolant line junctions on the main lines themselves. This is just to create a warm engine faster, same effect as the throttle body cooling lines.

Not running these can add horsepower especially with the addition of a thermal intake gasket.

datboibrad · 05-05-2009, 11:15 PM

call me crazy but i thought those where required for the iacv to even work? could have sworn the heat from the coolant is read by the iacv which in return determines how warmed up the engine is thus setting the idle? have i been completely wrong about this?

japslapsilvia · 05-06-2009, 08:17 AM

Quote:

Originally Posted by didderson

You don't need to connect them if you just block off the coolant line junctions on the main lines themselves. This is just to create a warm engine faster, same effect as the throttle body cooling lines.

Not running these can add horsepower especially with the addition of a thermal intake gasket.

WRONG!

IACV uses the coolant to determine cold idle. thats what its for. if you are using IACV connect to coolant lines.

The lines for throttle body are just for cold climate situations and are not needed

s14unimog · 05-07-2009, 10:01 AM

Quote:

Originally Posted by didderson

You don't need to connect them if you just block off the coolant line junctions on the main lines themselves. This is just to create a warm engine faster, same effect as the throttle body cooling lines.

Not running these can add horsepower especially with the addition of a thermal intake gasket.

ARE YOU KIDDING ME! You said the same dumb ass comment twice!

http://zilvia.net/f/2783998-post6.html

*XperienceM5G* · 05-14-2009, 06:35 PM

Lol, well thanks guys. I'll hook it up to my coolant lines as soon as I get some free time from work.

04-30-2009, 08:10 PM	#1
XperienceM5G Primo Join Date: Feb 2009 Location: AZ Age: 20 Posts: 160 Trader Rating: (1) Rides Gallery: XperienceM5G	IACV Nipples Sorry this questions has probably been asked before but I searched the forum and really couldn't find what I was looking for. Anyways could anyone help by telling me where the two nipples on my IAC valve connect to? I have an 89 240 with a blacktop SR. The IACV is connected for the most part, looks clean, but the two nipples next to each other are not connected to anything. Any help would be awesome as I'm at a bit of a loss. __________________ "It's like an act of murder; you play with intent to commit something." Duke Ellington

05-01-2009, 04:10 AM	#3
XperienceM5G Primo Join Date: Feb 2009 Location: AZ Age: 20 Posts: 160 Trader Rating: (1) Rides Gallery: XperienceM5G	okay, i'll check it out. thanks __________________ "It's like an act of murder; you play with intent to commit something." Duke Ellington

05-03-2009, 11:14 PM	#4
didderson Leaky Injector Join Date: Apr 2006 Location: Leola, PA Posts: 107 Trader Rating: (0)	You don't need to connect them if you just block off the coolant line junctions on the main lines themselves. This is just to create a warm engine faster, same effect as the throttle body cooling lines. Not running these can add horsepower especially with the addition of a thermal intake gasket. __________________

05-14-2009, 06:35 PM	#8
XperienceM5G Primo Join Date: Feb 2009 Location: AZ Age: 20 Posts: 160 Trader Rating: (1) Rides Gallery: XperienceM5G	Lol, well thanks guys. I'll hook it up to my coolant lines as soon as I get some free time from work. __________________ "It's like an act of murder; you play with intent to commit something." Duke Ellington

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04-30-2009, 08:13 PM	#2
garagelu Zilvia Addict Join Date: Aug 2005 Location: Birmingham, AL Age: 24 Posts: 932 Trader Rating: (13)	those are coolant ports. They go down to the coolant hoses under your intake manifold.

05-05-2009, 11:15 PM	#5
datboibrad Zilvia Member Join Date: Aug 2005 Location: tx Posts: 279 Trader Rating: (0)	call me crazy but i thought those where required for the iacv to even work? could have sworn the heat from the coolant is read by the iacv which in return determines how warmed up the engine is thus setting the idle? have i been completely wrong about this?

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