Question about 2004 Mazda MPV

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My engine sputters and jerks only when it is raining and defrost

My engine sputters and jerks only when it is raining and I turn my defrost or air conditioning on. All is ok in dry weather. Help

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Yes I just changed my ignition coil and spark plugs where the ignition coil was bad #3 and all my problems stopped. It rained today for the final test and no sputtering or stalling whatsoever.

Posted on Mar 29, 2009

  • rc Mar 05, 2010

    Ok one more solution. After a year that I changed my spark plugs and ignition coils I started to have the same problems again. Apparently the engine is very sensitive. If too much air is coming in the engine it causes it to backfire. SO what did i do, first I changed the air filter because not enough air was coming in through the throttle body. That helped the severity of the sputter so that lasted for about a week then the snow came and forget about it it sputtered everywhere So I took it to a reputable auto mechanic today and they said my o2 sensor was bad (note it has four of them, two in the front of the catalytic converter and two behind it left and right) He also found that a gasket was leaking air at the intake runner solenoid. So he replaced the intake runner flap gasket. So far I notice a difference in the way the vehicle runs. I will give an update in about a week to let You know if this seems to have fixed the problem. But so far so good. no check engine light and no sputters....yeah.

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Where the tyre jack is in mazda mpv 1997

Posted on May 09, 2009

  • Daryl Levien
    Daryl Levien Mar 17, 2013

    a reply is not a question

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I'm not sure if you have solved your problem yet but, I had the same problem. I found out that each individual spark plug has it's own coil. There were hairline fractures in the coils allowing moisture in making the engine miss. I had changed all six and the problem stopped. They were about 50 bucks a piece but it solved my problem that sounds similar to yours.

Posted on Mar 19, 2009

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