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2010 prius Is lagging very badly when accelerating

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Amazon flexer, Jun 3, 2018.

  1. Amazon flexer

    Amazon flexer Junior Member

    Joined:
    Jun 3, 2018
    9
    7
    0
    Location:
    Stockton
    Vehicle:
    2010 Prius
    Model:
    IV
    Hi guys,
    I just got my 2010 prius IV a few months ago. It got really hot today in the central valley (100f) and my car is very noticeably lagging when I press the accelerator (maybe 2 second lag) I dont know if this is just from the heat, or the weather is just coincidental. The car has a new fram air filter, and recently had the timing chain cover seal replaced by the dealership under warranty. I use my car to drive amazon flex maybe twice a week and I really need this problem solved. The car is showing no codes, has oil halfway in between low and full. Oh the car has 114k. Should I clean the maf? Change the pcv valve?
     
    #1 Amazon flexer, Jun 3, 2018
  2. Raytheeagle

    Raytheeagle Senior Member

    Joined:
    Jul 1, 2016
    11,251
    15,482
    0
    Location:
    Bay Area, California
    Vehicle:
    2019 Prius Prime
    Model:
    Prime Plus
    Welcome to Prius Chat (y).

    Some questions:

    • Have you just began noticing the lag?
    • How many miles have you put on your Prius?
    • Do you hear the battery fan by the rear passenger seat at all?
    • Has the egr circuit been cleaned as well as the intake manifold?
    • Is the mpg declining and by how much from normal?
    Keep us posted (y).
     
    #2 Raytheeagle, Jun 3, 2018
    bisco likes this.
  3. jack black

    jack black Active Member

    Joined:
    Jan 5, 2018
    225
    142
    0
    Location:
    USA
    Vehicle:
    2010 Prius
    Model:
    I
    Did the HV battery fan run in high speed all the time?
    Did the engine run all the time while stopped?
    Those are signs of overheated HV battery.
     
    #3 jack black, Jun 4, 2018
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