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idle screw help me

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Old Mar 27, 2009 | 09:21 PM
  #1  
nemesiskrp's Avatar
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From: corona, CA, usa
Default idle screw help me

can anyone show me a picture of the idle screw so I can adjust it a little higher? or maybe give me a detailed description?
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Old Mar 27, 2009 | 09:56 PM
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From: Brandon, FL, US
Default Re: idle screw help me

uhh...look at your throttle body. above where the intake pipe connects you'll see a slot, that is the slot cut into the screw.

why do you need to adjust it? its set at the factory, and if your idle is lower then it was, then you have another issue and changing the screw won't fix that other issue
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Old Mar 27, 2009 | 10:02 PM
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Default Re: idle screw help me

because sometimes when I come to a stop and pop the clutch in, it idles really low and the car dies. if I were to raise the idle up a tad, do you think that would help?
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Old Mar 27, 2009 | 10:21 PM
  #4  
nemesiskrp's Avatar
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Default Re: idle screw help me

maybe the idle air bypass valve would cause this?
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Old Mar 27, 2009 | 10:25 PM
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Default Re: idle screw help me

did it just start?
check your IACV or possibly MAP sensor
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Old Mar 27, 2009 | 10:34 PM
  #6  
nemesiskrp's Avatar
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Default Re: idle screw help me

well I just got this h22a motor put in my civic eg last week, so I am just starting to get to know this motor my self, but it is probably something that can be easily fixed ya?
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Old Mar 28, 2009 | 03:23 PM
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Default Re: idle screw help me

Originally Posted by jlude90
did it just start?
check your IACV or possibly MAP sensor
yup
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Old Mar 28, 2009 | 07:23 PM
  #8  
duanes's Avatar
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From: Independence, KS, USA
Default Re: idle screw help me

The idle screw is located on the top of the intake manifold, on the passenger side. It is at the top, right where the plastic inlet duck from the air filter attaches to the metal intake. It actually faces the passenger side and is completely inset, ie, the top of the screw is flush or a bit inset from the surface and the head of the slot type screw is about 7mm in diameter. It is about the only inset screw on the car.

The idle screw only sets a base idle. There is an idle air valve on the other side of the intake manifold (facing the front of the car, and a bit low). There is a two wire connector that attaches to it. If you unplug it with the engine idling, all lights and accessories off, you should adjust the idle for about 600 RPM. Then, plug the connector back in and engine should pop up to 750-800 rpm and stay there.

The IAC speeds up the engine in response to additional load such as air conditioner, electrical load, and turning the steering wheel. So now, if you turn on the air conditioner, the idle should stay pretty close to the same RPM as the compressor cycles on and off. Same with head lights on/off and turning the steering from one stop to the opposite.

Each of those operations has a sensor that causes the IAC to 'actuate'. If any of the fail, the engine speed will drop way down under heavier load.
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Old Mar 28, 2009 | 07:38 PM
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From: NB, Canada
Default Re: idle screw help me

^^ very well explained

sometimes ajusting the idle screw will not fix your problem however

check the timing to make sure its correct and iliminate any other problems...otherwise your just covering up problems by ajusting the screw
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