Honda and Acura Model Specific Forums

wondersparrow · 05-09-2008, 07:18 AM

[quote=OP](for B16A2, d16y5,y8)if the engine speed drops or stalls, adjust the (base) idle speed, clean the ports in the throttle body as necessary. if the engine speed doesnt drop, or doesnt stall, replace IACv.[quote]

What is meant by "drop"? when I unplug my IACV, my idle goes from ~1000 (it bounces between 1100 and 1600 which is one of my symptoms) and drops to a steady 600 or so. Should it drop right to the point of stalling? Is this maybe/likely a manifold gasket leak?

Sparky

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RaWrZie · 05-09-2008, 08:50 AM

I covered the bottom hole and my car stalled.
What's that mean?
Whats the next step?

wondersparrow · 05-09-2008, 09:57 AM

Was it warm at the time? I seem to be confused about which port goes where. I'll look a little more closely after work when I take it apart again.

RaWrZie · 05-09-2008, 10:01 AM

Nah it wasn't warm.
Just tested to see if the idle when down if I covered the bottom hole of the tb.
It went down and I guess because I had it there for too long it shut off due to not getting any air.

Still need to know what to do next.

wondersparrow · 05-09-2008, 10:31 AM

Well if what I think is right. The bottom one goes to the FITV which should be closed when the car is warm If it is cold, the FITV give is extra air so it can idle high.

RaWrZie · 05-09-2008, 03:32 PM

Quote:

Originally Posted by wondersparrow

Well if what I think is right. The bottom one goes to the FITV which should be closed when the car is warm If it is cold, the FITV give is extra air so it can idle high.

Ummm yeah you are right. Just saw another thread.

Top = IACV.
Bottom = FITV.

So what does it mean?

How can I check if the IACV is working? Same test through the top hole of the throttle body?

wondersparrow · 05-10-2008, 06:02 PM

is there a vacuum on the top hole at all? if not your IACV may be stuck closed. if you unplug the IACV, does the idle change?

RaWrZie · 05-11-2008, 10:34 AM

Quote:

Originally Posted by wondersparrow

is there a vacuum on the top hole at all? if not your IACV may be stuck closed. if you unplug the IACV, does the idle change?

No vacuum at the top hole(IACV?) but vacuum at bottom hole(FITV?).

I'm guessing the IACV is stuck close because after I took it off to see if the idle changed like you said...it sounded like complete shit.
Bouncing from 1k-2.5k.
Which is a damn lot. Lol.

Right now its steady with it on but around 1k+ rpm.

What do I do if the IACV if it is stuck close?

And is the FITV fine if it's vacuuming really strong through the tb hole?

RaWrZie · 05-11-2008, 06:06 PM

The clip with the 2 wires on my IAT were cut off before I bought it...

Would that play into getting a CEL 14?

Aside from the fact that I need to do something about my IACV since it seems to be stuck closed.

Any input will help.

wondersparrow · 05-11-2008, 09:29 PM

both the fitv and iacv are really easy to take off and clean. I used http://honda-tech.com/zerothread?id=1564019 and http://www.honda-tech.com/zerothread?id=1575913 . only issue I had is the gaskets/o-rings were all dried and needed to be replaced. that seafoam spray stuff is amazing. it will clean the black right off carbon.

RaWrZie · 05-11-2008, 09:44 PM

Well I've cleaned my IACV. So I know it isn't that.
But it could be because it is stuck closed. And I have no idea how to fix it.

My FITV is a bitch to get out. But I am getting a strong vacuum from inside the FITV hole in the throttle so I am kind of ruling that out.

So I am thinking it is my IACV being stuck closed.
And/or my IAT wires(2) had been cut.

portaman03 · 05-15-2008, 09:12 AM

Jonathan_ED3 · 02-14-2009, 08:57 PM

Quote:

Originally Posted by i.

Start the motor, hold rpms at 3000 until the radiator fan comes on, then let it idle.
Check TPS, with the throttle fully closed, the TPS should be around 10%
(coolant temp should be around 200 degrees, give or take 5 degress or so.)

Sorry to bump this old thread, but I need to ask!

What the heck does "should be around 10%" mean?

In what unit of measurement? 10% of what? How do you measure "10%"?

Curious about this as I have a very stubborn code 14 that I cannot get rid of.

It's OBDI d16z6 if it matters.

tysonboy · 09-01-2009, 12:10 AM

my car does the same thing idles at 1500/jerk ect.......... i will try to do this, and my car is a 1999 ek with a b16a2......

05-09-2008, 08:50 AM	#27
RaWrZie Join Date: Apr 2008 Location: Lawrence, MA, US Posts: 131	Re: Problems with idle? IACv? code 14? P0505? look here! (wondersparrow) I covered the bottom hole and my car stalled. What's that mean? Whats the next step? __________________ ☆'94 Honda Civic EX VTEC 5speed☆ LOTS of work to be done.

05-09-2008, 09:57 AM	#28
wondersparrow Junior Member Join Date: Mar 2008 Location: Edmonton, AB, Canada Posts: 126	Re: Problems with idle? IACv? code 14? P0505? look here! (RaWrZie) Was it warm at the time? I seem to be confused about which port goes where. I'll look a little more closely after work when I take it apart again. __________________ '97 Del Sol with SIRII dd '71 240Z roadcourse racer '99 Ram V10 for global warming

05-09-2008, 10:01 AM	#29
RaWrZie Join Date: Apr 2008 Location: Lawrence, MA, US Posts: 131	Re: Problems with idle? IACv? code 14? P0505? look here! (wondersparrow) Nah it wasn't warm. Just tested to see if the idle when down if I covered the bottom hole of the tb. It went down and I guess because I had it there for too long it shut off due to not getting any air. Still need to know what to do next. __________________ ☆'94 Honda Civic EX VTEC 5speed☆ LOTS of work to be done.

05-09-2008, 10:31 AM	#30
wondersparrow Junior Member Join Date: Mar 2008 Location: Edmonton, AB, Canada Posts: 126	Re: Problems with idle? IACv? code 14? P0505? look here! (RaWrZie) Well if what I think is right. The bottom one goes to the FITV which should be closed when the car is warm If it is cold, the FITV give is extra air so it can idle high. __________________ '97 Del Sol with SIRII dd '71 240Z roadcourse racer '99 Ram V10 for global warming

05-10-2008, 06:02 PM	#32
wondersparrow Junior Member Join Date: Mar 2008 Location: Edmonton, AB, Canada Posts: 126	is there a vacuum on the top hole at all? if not your IACV may be stuck closed. if you unplug the IACV, does the idle change? __________________ '97 Del Sol with SIRII dd '71 240Z roadcourse racer '99 Ram V10 for global warming

05-11-2008, 06:06 PM	#34
RaWrZie Join Date: Apr 2008 Location: Lawrence, MA, US Posts: 131	Re: (RaWrZie) The clip with the 2 wires on my IAT were cut off before I bought it... Would that play into getting a CEL 14? Aside from the fact that I need to do something about my IACV since it seems to be stuck closed. Any input will help. __________________ ☆'94 Honda Civic EX VTEC 5speed☆ LOTS of work to be done.

05-11-2008, 09:29 PM	#35
wondersparrow Junior Member Join Date: Mar 2008 Location: Edmonton, AB, Canada Posts: 126	both the fitv and iacv are really easy to take off and clean. I used http://honda-tech.com/zerothread?id=1564019 and http://www.honda-tech.com/zerothread?id=1575913 . only issue I had is the gaskets/o-rings were all dried and needed to be replaced. that seafoam spray stuff is amazing. it will clean the black right off carbon. __________________ '97 Del Sol with SIRII dd '71 240Z roadcourse racer '99 Ram V10 for global warming

05-11-2008, 09:44 PM	#36
RaWrZie Join Date: Apr 2008 Location: Lawrence, MA, US Posts: 131	Re: (wondersparrow) Well I've cleaned my IACV. So I know it isn't that. But it could be because it is stuck closed. And I have no idea how to fix it. My FITV is a bitch to get out. But I am getting a strong vacuum from inside the FITV hole in the throttle so I am kind of ruling that out. So I am thinking it is my IACV being stuck closed. And/or my IAT wires(2) had been cut. __________________ ☆'94 Honda Civic EX VTEC 5speed☆ LOTS of work to be done.

05-15-2008, 09:12 AM	#37
portaman03 Junior Member Join Date: Mar 2007 Location: branford, ct, usa Posts: 681	__________________ 94 Accord first love - Sold, 01 Civic EX lowered - Sold 03 Acura RSX-S Totalled, RIP love of my life http://honda-tech.com/zerothread?id=2308590 01 Civic EX, full susp, lips, etc - Currently sipping 38mpg

09-01-2009, 12:10 AM	#39
tysonboy Junior Member Join Date: Mar 2008 Location: LINCOLN, ne Posts: 59	Re: Problems with idle? IACv? code 14? P0505? look here! my car does the same thing idles at 1500/jerk ect.......... i will try to do this, and my car is a 1999 ek with a b16a2...... Last edited by tysonboy; 09-01-2009 at 12:11 AM. Reason: wrong spelling

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