Question about 2004 Mazda 3

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My 2004 Mazda 3, normally idles around 1,000 rpm, the past few weeks it as been ideling around 500 rpm's, it shakes a little at this rpm. If it drops below that it stalls, only stalls when slowing to a stop. Someone recommended replacing the idle air control valve, but the auto parts stores, don't seem to think that part exist for this particular car.

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Try unhooking one of the battery cables and leave it off for at least 20 minutes. When you hook it back up the computers should re-boot. That has solved problems for me with heater, interior lites, power windows, AC, day time running lites, power mirrors, fast idle, rough or slow shifting, CD player, and wipers on GM autos and S-10 PU and Dodge trucks. None of the switches are connected to the device they control anymore. The switch tells the computer to open the window and the computer send a signal to the window motor. When the computer gets confused strange things will happen or not happen. Of course you may have to re-set your radio stations.

Posted on Sep 03, 2010

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Posted on Jan 02, 2017

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i have a similar problem.i took my car to advanced auto and had them check the computer for me.the egr valve has a leak.find an advanced auto parts or call your local auto parts stores and see if they can do it for you.i find advanced auto parts did it for free.it should give you an idea of whats wrong.

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