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Can bad maf P3191 code ,make run at high rpm in cool weather?

Discussion in 'Generation 1 Prius Discussion' started by David Kleinwolterink, Dec 7, 2015.

  1. David Kleinwolterink

    David Kleinwolterink Junior Member

    Joined:
    Jun 23, 2015
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    Location:
    iowa
    Vehicle:
    2005 Prius
    Model:
    One
    Am getting a new maf sensor ,but was wondering if bad maf could make run at higher rpm ,this my 1st gen one seam this one runs much more time at higher rpm
     
    #1 David Kleinwolterink, Dec 7, 2015
  2. howardc64

    howardc64 Member

    Joined:
    Nov 11, 2011
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    Location:
    Pacific Northwest
    Vehicle:
    2011 Prius
    Model:
    Two
    Have you cleaned the throttle body recently? When I did that on the Gen1/Gen2, idle RPM was high for awhile until ECU adapted.

    Although I could never figure out how did the ECU know I cleaned the throttle body. Didn't disconnect battery etc... and the TB plate wasn't too dirty so I would expect the air leakage at idle to have changed at all.
     
    #2 howardc64, Dec 7, 2015
  3. David Kleinwolterink

    David Kleinwolterink Junior Member

    Joined:
    Jun 23, 2015
    26
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    Location:
    iowa
    Vehicle:
    2005 Prius
    Model:
    One
    No this was more than idel ,this is when it is going up a hill or like when you pass someone , I know this one speed trans
     
    #3 David Kleinwolterink, Dec 7, 2015
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