1. Attachments are working again! Check out this thread for more details and to report any other bugs.

Engine louder when not warmed up

Discussion in 'Gen 3 Prius Main Forum' started by Roger T, Mar 19, 2017.

  1. Roger T

    Roger T Member

    Joined:
    Feb 5, 2014
    198
    48
    0
    Location:
    MA
    Vehicle:
    2014 Prius
    Model:
    Two
    Excuse my ignorance. But the Prius is my first car ever so i have limited knowledge about cars.

    The engine sounds louder and not smooth when i accelerate on local roads with a cold engine(engine coolant temperature is 50F, 2500RPM). The ambient temperature is around 30F.

    Are all car engines run rougher when the engine is cold? Once the engine coolant is hotter (100F+) the engine is smoother. The engine feel very smooth when the coolant reaches 180F.
     
    #1 Roger T, Mar 19, 2017
  2. Aaron Vitolins

    Aaron Vitolins Senior Member

    Joined:
    Feb 28, 2014
    1,612
    1,144
    0
    Location:
    Franklin TN
    Vehicle:
    Other Hybrid
    Model:
    N/A
    Yes that is perfectly normal. Nothing to worry. I always try to go easy on the engine when it is warming up. I don't like the sound of a cold engine anyway, so I drive smoothly and slowly the first few minutes.
     
    #2 Aaron Vitolins, Mar 19, 2017
    Roger T likes this.
(You must log in or sign up to post here.)