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Mazda Protege, idle air control valve, mazdaspeed 6, mazda protege sound

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Generic problem for all Mazda Protege Cars

My car is a 03 (by 2 users)


posted by fosgatefreak on Oct 07, 2008

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my car is a 03 mazdaspeed protege. After about a twenty minute drive it starts making a high pitched whistle sound. When i give it some gas it stops but when i let off it comes back.
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1 Other User Has The Same Problem

Comment by commishaffl, posted on Oct 30, 2008

I have the same problem. I was told by an auto shop that the entire turbo needs replaced and it would be $2,500+ to fix it. However I read that the wastegate actuator could be the problem and it seems to cost around $500. Anyone have an idea or maybe you have fixed your problem and could shed some light?

Solution #1

posted on Oct 07, 2008
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emissionwiz
emissionwiz

Rank:Guru Guru
Rating: 88%, 1557 votes
This could be caused the idle speed control valve as air passes through it, have seen this issue on other models many times, clean the valve first, if the noise persists replace it.
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This Problem Also Relates To: 2003 Mazda Mazda6 1993 Mazda MX-3 1994 Mazda 323 2004 Mazda 6 1992 Mazda MX-3 1997 Mazda Millenia 2000 Mazda MPV

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