Will a bad iacv cause this...

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Old Dec 26, 2008 | 07:18 AM
  #1  
IHEARTMYHONDA91's Avatar
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Icon2 Will a bad iacv cause this...

...Im throwing a code 14 (iacv)

Its on a JDM D15b VTEC and I know the sensor is bad because it was broken when the motor was shipped, not all the way off but enough to cause concern, then sure enough when I get the swap running BAM! CODE 14

Anyways the rpm's surge @ idle and the throttle response is kinda weak. Almost sounds like its missing through low rpm's (2-3500 rpm) then picks up.

Ive checked and checked the timing and Im positive it dead on.

Any and all info will be greatly appreciated (**** off **** talkers)
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Old Dec 26, 2008 | 07:58 AM
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Default Re: Will a bad iacv cause this...

yep sounds highly likely that's why you're getting those symptoms.
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Old Dec 26, 2008 | 09:39 AM
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Default Re: Will a bad iacv cause this...

right on... hope thats the problem

anyone else?
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Old Dec 26, 2008 | 10:05 AM
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Default Re: Will a bad iacv cause this...

bump.... good luck man
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Old Dec 26, 2008 | 10:47 AM
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Default Re: Will a bad iacv cause this...

Originally Posted by schock3
bump.... good luck man
Is that like a bump your correct?

Or like a bump your **** outta luck?
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Old Dec 26, 2008 | 12:02 PM
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Default Re: Will a bad iacv cause this...

bump
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Old Dec 26, 2008 | 03:03 PM
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Default Re: Will a bad iacv cause this...

i just swap a d16y8 in my 91 hf, and i got a code 14 and i new it was the idle
as of right now thats the only code i have...
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Old Dec 26, 2008 | 03:31 PM
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Default Re: Will a bad iacv cause this...

Well if the IAC is messed up its best to go ahead to replace it anyways. Probe it with a voltmeter and check it first, and then for resistance,if you have a tight budget and can't just go and replace it so easily.
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Old Dec 26, 2008 | 03:40 PM
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Default Re: Will a bad iacv cause this...

i would try taking it out and cleaning it with carb cleaner thats worked for me before.
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Old Dec 26, 2008 | 03:42 PM
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Default Re: Will a bad iacv cause this...

Originally Posted by Bserieskllr
i would try taking it out and cleaning it with carb cleaner thats worked for me before.
I concur..
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Old Dec 27, 2008 | 07:56 AM
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Default Re: Will a bad iacv cause this...

well i dont know how well the carb cleaner would do seeing how the sensor is actually broke itself, right where the engine harness plugs into the sensor. im actually surprised that it clips together.

ill just replace it and go from there....

thanks guys!
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Old Dec 27, 2008 | 09:19 AM
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Default Re: Will a bad iacv cause this...

just replace it with an obd1 iacv. problem solved.
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Old Dec 27, 2008 | 02:03 PM
  #13  
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Default Re: Will a bad iacv cause this...

Originally Posted by 2slow4stock
just replace it with an obd1 iacv. problem solved.
gee... thats intelligent!
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Old Dec 27, 2008 | 07:12 PM
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Default Re: Will a bad iacv cause this...

Originally Posted by IHEARTMYHONDA91
gee... thats intelligent!
And your advice would be?
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Old Dec 28, 2008 | 10:55 PM
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Default Re: Will a bad iacv cause this...

Fitv
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Old Dec 29, 2008 | 04:58 AM
  #16  
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Default Re: Will a bad iacv cause this...

Im running an Mini-Me Swap and i have idle surges and occasionly my motor will stall at stop lights and all. Im running what could possibly be the problem. IACV? How do i know if its bad? Where exactly is it located at? The motor was orginally a D15B7 and now its bored out with a D16Y8 VTEC head on it. Does it need an IACV for a Y8 head? Please help me. Thank YOu
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Old Oct 10, 2009 | 07:34 AM
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Default Re: Will a bad iacv cause this...

People open threads to find help from others and the problem never gets answered. I find the Honda-Tech is not the place to find good information, just lots of kids with nothing to do with smart remarks. Lets tighten up the Honda Community. NO HOMO!

this is an opinion, but constructive.
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Old Oct 10, 2009 | 09:05 AM
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Default Re: Will a bad iacv cause this...

Maras, I can't agree more. I've stopped using this site for the most part. All people do it post "BUMP!" everywhere and flame each other. **** Honda Tech. Bunch of teenagers and riceboys trying to one up each other because they have egos.
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Old Oct 10, 2009 | 12:54 PM
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Icon2 - IAC sensor

I have question about IAC wire colors. I have a + Yellow/Black & - RED. I am throwing a code 14. 3 known good ECUs and 3 IAC all good. Checked the IAC with battery and valves open. So it's a short or open - wire. I question the -red wire!? it's usually a Black/blue. I want to trace the wire back to the ECU and wanted to make sure with someone with more knowledge about the issue before I start. Does the - IAC wire go through the driver side fire wall? & when does it change to Green/white to the ECU. I would greatly appreciate someones thought and knowledge about this issue. Thank you!
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