Question about Mazda Protege

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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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  • commishaffl 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?

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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.

Posted on Oct 07, 2008

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My car is making a high pitched whistle after about a twenty minute drive. It goes away when i push on the throttle and comes back when i let off. Also it is a mazdaspeed protege.


ok heres what it could be... first check your belts.. if there ok then it s your altaniter pully or tension bar lully thats hollin like that it could even be your power sterring pully... chcek where the sound is commimg form by reving the engine for under the hood while you are there. if its any one of these pullys then replace the alt.. tension or power sterring unit. good luck.....

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