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Thread: Mazda 3 starts like crap, idles too high.

  1. #1
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    2005 Mazda 3

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    Mazda 3 starts like crap, idles too high.

    My 2005 Mazda 3 with 298k miles starts terribly and doesn't want to start. Then, when I get it to start it idles at 2700 to 3000. Any ideas? I have no clue what to do to this thing.

  2. #2
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    2014 CX-5 GT

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    I suggest taking it to a dealer.

  3. #3
    2008.5 MGM MS3 rsvinylgraphics's Avatar
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    Quote Originally Posted by dougal View Post
    I suggest taking it to a dealer.
    With almost 300k miles on it, a dealer will suggest getting rid of it and buying a new vehicle

  4. #4
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    2014 CX-5 GT

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    Quote Originally Posted by rsvinylgraphics View Post
    With almost 300k miles on it, a dealer will suggest getting rid of it and buying a new vehicle
    OK, take it to a another auto repair shop.
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  5. #5
    Registered Member concept's Avatar

    2014 Mazda3 S GT auto, 2008 MX5 6-speed

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    It may be a large vacuum leak. That's the first thing I'd check with a vacuum gauge. This happened a while back with my Protégé. The rubber accordion intake snorkel split on its underside, causing the engine to stumble and idle at high RPM. I temporarily used duct tape to seal the leak, allowing me to drive the car home. Once I installed the new part, everything was back to normal.
    2014 3S GT, Deep Crystal Blue, Eibach Pro-Kit, Enkei PF01s, Koni Sports
    2008 MX-5 Touring (Mazdaspeed CAI, HIDs, Progress/Koni Sports/Racing Beat sways, Magnaflow)
    2002 Protege ES (Sold for $1700 with 131,000 miles)

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