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Originally Posted by blazee
Clean you IAC valve. If it sticks it will cause your engine to rev like that. Are you getting any codes?
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I am not that big of a car person. How would I know if I am getting a code? I have seen it talked about here on the boards, but I have no idea where a Blazer would say a code.
Also should mention that my uncle (before this) had gotten a new air filter and pcv valve.
Also I have skimmed the board here and some talk about air hoses being a problem. I just want to tell you guys everything that is going wrong to better be able to fix it.
The heat/cool controls no longer work on high. Also I have heard two large hissing noises comming from that area of the dash in the last day or so. May mean something, may not.