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IAC valve

  #1  
Old 09-23-2008, 04:17 PM
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Default IAC valve

what do I use to clean this out? everyone says carb cleaner kills them but everyone recommends cleaning them......well what can I pick up at pep boys that'll do the job
 
  #2  
Old 09-23-2008, 05:25 PM
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Default RE: IAC valve

You could try Seafoam. It's acarbon cleaner but I don't know if it's bad for the part or not. I use Seafoam to clean the carbon out of my manifold, so I assume it's safe.
 
  #3  
Old 09-24-2008, 12:25 AM
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Default RE: IAC valve

Good question!

I have used Gummout throttle body cleaner with no problems -to date.

Have never heard of throttle body cleaners damaging Toyota IAC valves, but brake cleaners yes. Some Ford IAC valves will melt with cleaners. Some manufacturers coat their throttle bores with something cleaners can damage but Toyota does not appear to be one of them, yet.

Toyota should sell or be able to get a Toyota Throttle Plate Cleaner for throttle, IAC valve, cleaning etc, Part Number 00289-1TP00. This may be the offical product.

Suggestions have been made for using Valvoline Syn Power TB or CNC Teflon Safe Throttle Body Cleaners. Both are supposed to be safe with coated bores and thus must be a milder solvent.

Does the engine idle OK and not stall out. If OK then no reason to clean the IAC valve.

Good subject, perhaps others can post with the opinions.


 
  #4  
Old 09-24-2008, 04:49 AM
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Default RE: IAC valve

As I posted on the other thread, I used carb cleaner on my 95 with no problems. Seafoam would work from a spray bottle, even WD-40 should be ok and even provide some lubrication.
 
  #5  
Old 10-01-2008, 04:01 PM
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Default RE: IAC valve

ok....well whats happening is when first started and cold it will idle very rough and stall out but as soon as she warms up for a couple of min.....everything is fine. I bought a can of gummout throttle body cleaner and cleaned out the IAC. Well....still nothing. My question is how much did you guys spray in there? Everyone has been saying clouds of smoke comes out the tailpipe when first starting....and I didnt get anything. Am I not spraying enough and should I let it sit overnight or something.....I sprayed for maybe 5-10 seconds in the IAC hole and let it sit for 3-4 hours.

Anything else that could be causing this? Plugs and fuel filter are new.
 
  #6  
Old 10-02-2008, 07:14 AM
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Default RE: IAC valve

Did you test the Engine Coolant Temp Sensor (ECT)? Rough running when cold could be too little gas or too much.Did you depress the gas pedal a little when cold, and if so did that smooth out the rough running? What rpm are you getting when cold?
 
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