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

P0301 mystery occurrence

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by goodMXguy, Feb 12, 2019.

Tags:
Page 2 of 2
  1. Tcortez

    Tcortez Junior Member

    Joined:
    Jan 1, 2016
    25
    42
    0
    Location:
    Lancaster
    Vehicle:
    2010 Prius
    Model:
    IV
    I was reading another post that someone removed the coolant cap o ring before cold start up and that helped with the shaking. I’m wondering if these thermostats get stuck and over heat the engine. I’m not losing any coolant or oil. I’m going to try and clean my egr and coolant circuit. I herd if you add water to the coolant it might cause a misfire also.
     
    #21 Tcortez, Mar 30, 2019
  2. Raytheeagle

    Raytheeagle Senior Member

    Joined:
    Jul 1, 2016
    11,251
    15,476
    0
    Location:
    Bay Area, California
    Vehicle:
    2019 Prius Prime
    Model:
    Prime Plus
    Removing the oring depressurizes the coolant system, meaning you won’t have coolant flow and will vaporize coolant. Adding water affects the performance of the coolant. It comes premixed and should only be adjusted in a spot;).

    Things to be aware of:).

    Good luck and keep us posted(y).
     
    #22 Raytheeagle, Mar 30, 2019
    Skibob and SFO like this.
  3. Skibob

    Skibob Senior Member

    Joined:
    Sep 14, 2018
    2,912
    1,496
    0
    Location:
    Northern California
    Vehicle:
    2006 Prius
    Model:
    N/A
    Did you know most model T,s didn’t even have a water pump? Ever heard of a thermosyphin?

    Thermosiphon - Wikipedia

    Unfortunately it does not work so good with modern cars not designed this way

    It does make for old movies having radiators steaming though. The system was unpressurized.
     
    #23 Skibob, Mar 31, 2019
(You must log in or sign up to post here.)
Page 2 of 2