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2004 Mazda 6 Car sputtering

Tiny
SAUDIOGUY
  • MEMBER
  • 2004 MAZDA 6
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 96,000 MILES
I have a problem, my Mazda seems to sputter when I drive up a hill almost like a lag. And sometimes when I am at a red light the rpms will drop up and down. Like it is is idling funny.

I have changed the spark plugs, and tried better gas, and gas treatment. Do you have any ideas of what it may be. Thanks for your help.
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Tuesday, December 23rd, 2008 AT 7:35 PM

1 Reply

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Hello
Thanks for the donation.

If it is past due for a full tune up (plug wires, fluids, filters etc.) Then I would recommend starting here.

If the idle is still revving up and down afterwards, you may want to consider checking the IAC valve (Idle Air Control Valve). This is located on the throttle body. It will cause the idle speed to fluctuate when it goes bad.

Hope this helps.
Thanks for using 2carpros. Com!
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Wednesday, December 24th, 2008 AT 1:44 AM

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