Honda Accord (1990 - 2002) Includes 1997 - 1999 Acura CL

RPM fluctuations

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Old Sep 13, 2013 | 07:24 PM
  #1  
h22vtec337's Avatar
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Default RPM fluctuations

i have a 94 accord with a H22A engine swap and it was running fine for the first few months and now im having problems with my RPM's starting around 1500 and then dropping to 750 to 500 at first i thought it was the spark plugs so i got new ones and swapped them but its still happening so i cleaned the IACV hoping that would help does anyone have any suggestions
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Old Sep 13, 2013 | 10:45 PM
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Default Re: RPM fluctuations

Originally Posted by h22vtec337
i have a 94 accord with a H22A engine swap and it was running fine for the first few months and now im having problems with my RPM's starting around 1500 and then dropping to 750 to 500 at first i thought it was the spark plugs so i got new ones and swapped them but its still happening so i cleaned the IACV hoping that would help does anyone have any suggestions
Does the H22A have a FITV? There is a write up in the FAQ, basically you take it off, tighten down the ring snug, reinstall and the Fast Idle issue usually goes away.
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Old Sep 14, 2013 | 12:07 AM
  #3  
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Default Re: RPM fluctuations

can you describe a little more clearly what's going on with your rpms and when
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Old Sep 14, 2013 | 07:45 PM
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Default Re: RPM fluctuations

Is this happening after a cold start, hot idle, low speeds?
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Old Sep 14, 2013 | 09:22 PM
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Default Re: RPM fluctuations

Hi h22vtec337 ,
please explain more detail, when you start engine with no load or load ? how long does rpm drop to 500 and keep there or up again ? I think it problem with your idle valve,
if you explain more, I hope you will have many support,
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Old Sep 15, 2013 | 02:35 AM
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Default Re: RPM fluctuations

what does iacv mean and what does it do? i am having engine problems and if this can be taken off and cleaned easy then i might as well. where is it located on the engine? thanks for any help and i hope things work out for h22vtec337.
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Old Sep 15, 2013 | 02:36 AM
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Default Re: RPM fluctuations

@mad_mike lol are you stealing that baddass drifters name?
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Old Sep 15, 2013 | 04:21 AM
  #8  
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Default Re: RPM fluctuations

Originally Posted by accordSIRcoupe
what does iacv mean and what does it do?
Idle
Air
Control
Valve

It controls the air bypassing the closed throttle body blades. It is simply a solenoid that is controlled by the ECU. If the ports or solenoid becomes gummed with soot the valve will either jam or the ports clogged with soot and not be able to correctly control the air bypass for idle speed control.
Originally Posted by accordSIRcoupe
@mad_mike lol are you stealing that baddass drifters name?
Have had this nickname for years.
More than likely the person you speak of is probably half my age at which point I was having fun putting my car into opposite lock while he was still shitting his pants.
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Old Sep 15, 2013 | 06:26 PM
  #9  
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Default Re: RPM fluctuations

his names mad mike whiddett and hes a drifter from New Zealand, he has a Mazda Rx7 with 750Hp. i reckon his cars way too good and thats why he always seems to win.
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