Volvo AWD S70 Forum

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poor acceleration after cold stat S70 2000

posted by  freewalk on  Thu Dec 14 20:56 CST 2017
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last visit: Wed Oct 15 16:21 CST 2014
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My 2000 S70 non turbo, with 174,000 miles has a problem when the car is dead cold and the temp is below 30 deG. F. It will start fine, but as you start to accelerate it will not go over about 10 MPH. It feels like it has no gas, and pumping or flooring the accelerator does nothing. After about 4 or 5 minutes the acceleration starts to come back,in ten minutes it is normal. No codes,no cel,VIDA shows no codes. Electronic Throttle Module is in spec in VIDA. Car has White sticker etm. After 10 minutes car is fine. No further problems on restart until engine has cold soaked back to below 30d. I would appreciate your input








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    poor acceleration after cold stat S70 2000

    posted by  KlausC on  Sat Dec 16 20:40 CST 2017
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    last visit: Fri Oct 24 10:15 CST 2014
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    Have you cleaned the TPS switch at the ETM? It is possible that the 'grease' is solidifying in the cold and needs to be cleaned up.
    --
    Keeping it running is better than buying new








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    poor acceleration after cold stat S70 2000

    posted by  KlausC on  Fri Dec 15 14:09 CST 2017
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    last visit: Fri Oct 24 10:15 CST 2014
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    Sounds like the ETM is refusing to move the throttle butterfly when cold. You have a white label? I thought they were replaced with the yellow label.
    --
    Keeping it running is better than buying new







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