[Wororo]

I am the third owner of someone else’s project car and I’m trying to clean the IACV but I have a minor conundrum.
It’s on the bottom of the intake, is this normal for a d16y8 engine? I can’t find any evidence of this being the norm on forums or YouTube so I’m sort of lost

 

[slo_eg8]

post a pic of your intake and where your iacv is

 

[Wororo]

post a pic of your intake and where your iacv is

how’s this? There was a black hose running off the closer post on the bottom but I’ve removed it already

 

[slo_eg8]

thats not the iacv lol

thats the fitv (fast idle thermo valve)


slo edit

unless thats a y7 throttle body, the iacv should be on the back of the y8 intake.

 

[Wororo]

thats not the iacv lol

thats the fitv (fast idle thermo valve)


slo edit

unless thats a y7 throttle body, the iacv should be on the back of the y8 intake.

how can i differentiate between a y7 and a y8 intake? I can’t find anything that looks close to the IACV besides rhat

 

[slo_eg8]

1) google.

2) y7.

3) y8.

4) z6.

 

[Wororo]

1) google.

2) y7.

3) y8.

4) z6.

It’s certainly a y8 without question but i don’t see the IACV or where it could be attached even. I’m also not seeing the black part in the top right of your image of a y8

 

[slo_eg8]

why dont you show me pics of your intake.

 

[Oldcivicjoe]

It's a y8 auto intake uses the tb mounted iacv like the y7.

 

[Wororo]

It's a y8 auto intake uses the tb mounted iacv like the y7.

Thanks! Where would the IACV be in this case?

 

[slo_eg8]

It's a y8 auto intake uses the tb mounted iacv like the y7.

 

[mattliston]

Did I miss it by miles, or has there been zero picture posting by OP?

There are 3 intake manifolds that "look d16y8"

manual Y8 has the 2-wire IACV on the backside
auto Y8 has a 3 wire IACV mounted on the throttlebody
manual HX d16y5 has the similar intake, but it is TINY inside. Treated like manual y8, but has EGR location.

 

[Wororo]

Did I miss it by miles, or has there been zero picture posting by OP?

There are 3 intake manifolds that "look d16y8"

manual Y8 has the 2-wire IACV on the backside
auto Y8 has a 3 wire IACV mounted on the throttlebody
manual HX d16y5 has the similar intake, but it is TINY inside. Treated like manual y8, but has EGR location.

I think I figured it out with the help of a YouTube video. I have an auto y8. Would you like to confirm I circled the IACV on the underside of the throttle body

 

[mattliston]

You were told literally a few posts above, that that was a FITV, and NOT an IACV. You even used the exact same image!

 

[slo_eg8]

You were told literally a few posts above, that that was a FITV, and NOT an IACV. You even used the exact same image!

thats what I thought too, but apparently the auto y8 throttle body they decided to put the iacv there.......

D16Y7

D16Y8 (Manual)

D16Y8 (AUTO)

 

[drtalon123]

I think I figured it out with the help of a YouTube video. I have an auto y8. Would you like to confirm I circled the IACV on the underside of the throttle body View attachment 144466
View attachment 144465

You are correct sir, that is the IACV for an auto Y8.

 

[dfb399]

View attachment 144465

This is the IACV.
On a D-series engine:
Only the D16Y7 Throttle body (Manual or Auto.) and the D16Y8 w/ Auto. trans, have this "Throttle body mounted IACV" configuration.

FWIW,
FITV's are found on, some (idk exactly which), B-series Throttle bodies. The other B-series Throttle bodies have two coolant, 'warming' nipples, to assist getting the Throttle body warmed-up on Cold starts.

 

[mattliston]

Yep, I feel dumb. Y7 IACV setup.

I forgot the Y7 has it bottom mounted when you turn the cable spool sideways for a plenum intake.

Fuck, I should know better, since I have done the Y8 intake swap on a couple Y7 engines.

 

[dfb399]

Yep, I feel dumb. Y7 IACV setup.

I forgot the Y7 has it bottom mounted when you turn the cable spool sideways for a plenum intake.

Fuck, I should know better, since I have done the Y8 intake swap on a couple Y7 engines.

lol.
I’m a bit obsessive, but it does aid that I visited all this ‘IACV madness’ over the past 8-10 months with my own build.
Still fresh..
But don’t ask me in a year haha

 

[Slow-D]

how’s this? There was a black hose running off the closer post on the bottom but I’ve removed it already
View attachment 144456
View attachment 144457

This is the fast idle thermo valve.