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Had the car in the indy shop on Wednesday and they pulled the code p0410 and p0411 and replaced the rubber sleeve. They told me that there is still an irregular idle and that it could be the throttle body or idle control valve that is effecting it and further investigation is needed. I had the engine cover off and noticed what sounded like a hissing noise like an air leak by the manifold but there is so much other noise when the engine is running that I can't pinpoint where exactly it is. Can anyone recommend something that I can do to try and find where that hissing noise is coming from. I heard about spraying carburetor cleaner where a possible leak could be when the engine is on and cold and listen for a change in idle. Has anyone done that or have any other suggestions for me? TIA
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