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Poor starting and minor hesitation V70-XC70 2004

posted by  Steven H on  Fri Jun 27 14:11 CST 2014
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last visit: Sun Sep 21 18:32 CST 2014
[RELATED]

My 2004 2.5T V70 often doesn't start smoothly in the morning. When the ignition is turned on if it doesn't start immediately it seems to start one cylinder at a time. I turn off the ignition and try again and it starts perfectly every time. Recently I have noticed a minor hesitation when I first start moving, almost a pulsation. This seems to go away quickly upon driving. The car has 175K miles and has the steel gas tank with no external filter. Is this a filter or pump or pressure regulator or fuel injector issue? Thank you!
--
Steven 04 C70 HPT, 04 V70 2.5T Titanium, 06 S40 2.4i








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    Poor starting and minor hesitation V70-XC70 2004

    posted by  Steven H on  Sun Sep 21 13:04 CST 2014
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    last visit: Sun Sep 21 18:32 CST 2014
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    Just to close the loop. Took it to my independent Volvo mechanic. Suspected the fuel pump or filter which are in the fuel tank (therefore couldn't change the filter myself) but was actually the mass air flow meter. Running normally again. $450.
    --
    Steven 04 C70 HPT, 04 V70 2.5T Titanium, 06 S40 2.4i








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    Poor starting and minor hesitation V70-XC70 2004

    posted by  riverbend on  Sat Jun 28 07:16 CST 2014
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    last visit: Wed Oct 22 15:29 CST 2014
    [RELATED]

    Have you checked your fuel pressure ? Is the check engine light on ?

    Greg







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      Poor starting and minor hesitation V70-XC70 2004

      posted by  Steven H on  Wed Jul 9 16:53 CST 2014
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      last visit: Sun Sep 21 18:32 CST 2014
      [RELATED]

      I haven't checked the fuel pressure. The check engine light is not on. Once started the car seems to run normally. And, this usually only happens when the car sits overnight. Of course, this morning it starts immediately!
      --
      Steven 04 C70 HPT, 04 V70 2.5T Titanium, 06 S40 2.4i








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      Poor starting and minor hesitation V70-XC70 2004

      posted by  settjes on  Wed Jul 2 19:20 CST 2014
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      last visit: Thu Jul 3 14:07 CST 2014
      [RELATED]

      I just had similar. It was crankshaft position sensor. Replaced it and runs perfect now.








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        Poor starting and minor hesitation V70-XC70 2004

        posted by  Steven H on  Wed Jul 9 16:54 CST 2014
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        last visit: Sun Sep 21 18:32 CST 2014
        [RELATED]

        How did you diagnose the faulty sensor? And, is this a reasonably easy replacement or a job for an experienced Volvo mechanic?
        --
        Steven 04 C70 HPT, 04 V70 2.5T Titanium, 06 S40 2.4i







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