Question about 1995 Mazda MX-3

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MX-3 with V6 Manual transmission. Engine idle revving up and down

Shortly after I start my MX-3 when cold the idle goes up and down from 1000 rpm to about 2,500 rpm. Then after running for about 15 minutes it returns to a normal idle. Only seems to do it when starting from cold. Is there something that needs replacing. I have replaced the AIr filter but not sure what would cause this .

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  • paulpost9 May 04, 2009

    Thank you Julio. I will get on that and I did recently replace the connector  junction hose from the air box to the engine. I live in Victoria BC so us Canadians are use to the cold air although not quite so bad here as the rest of Canada  -  Cheers, Paul.

  • yadayada
    yadayada May 11, 2010

    do you have any trouble codes or a check engine light?

  • blumayno
    blumayno Apr 07, 2012

    Did you ever find the problem? I have the same problem.

    Jim

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You should check your engine's AIR hoses that are connecting to the airbox. sometimes a simple airleak will be enough to alter your idle. Specially when its cold the car will already idle rough ( I know im canadian lol). So go check your air hoses ;)

Posted on May 04, 2009

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