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ENGINE MISFIRE ,ROUGH IDLE ,STALLING

Discussion in 'Gen 3 Prius Main Forum' started by JR GILL, Jun 6, 2022.

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  1. JR GILL

    JR GILL New Member

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    2010 Prius
    Model:
    III
    So I had a bad gasket on my 2010 Prius but i got whole engine rebuilt and now i get random?mulltiple cylinder misfire code P0300,P0304,P0303 and engine vibrates Intermittent stalling, Rough idle
    . also mechanic had to change crankshaft position sensor because he told me they were melted due to overheating . first i was thinking it could be still crank shaft sensor because i get all the symptoms of that but then i do not get code for that .ANYONE HAVE ANY IDEA WHAT IT COULD BE.
     
    #1 JR GILL, Jun 6, 2022
  2. PriusCamper

    PriusCamper Senior Member

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    If your crankshaft sensor melted due to over-heating you're gonna have to establish what else was damaged during overeating... A warped cylinder head is worst case scenario. Have you had a machine shop work on your head or is the mechanic doing it?
     
    #2 PriusCamper, Jun 6, 2022
  3. JR GILL

    JR GILL New Member

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    Model:
    III
    SENSORS WERE MELTED BEFORE ENGINE REBUILT AND MECHANIC CHANGED THEM WHEN HE REBUILED THE ENGINE
     
    #3 JR GILL, Jun 6, 2022
    Last edited: Jun 6, 2022
  4. PriusCamper

    PriusCamper Senior Member

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    What caused the engine to be rebuilt in the first place is what I'm getting at... Doesn't your rebuild come with a warranty? Has it expired yet? I'm placing my bet on the mechanic overlooking something during the rebuild that they now have to deal with as per terms of the warranty.
     
    #4 PriusCamper, Jun 6, 2022
  5. JR GILL

    JR GILL New Member

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    Location:
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    Vehicle:
    2010 Prius
    Model:
    III
    IT WAS A HEAD GASKET . CAR HAS NOT RAN SINCE ENGINE REBUILT .MECHANIC WAS TRYING TO SEND CAR TO THE DEALERSHIP BUT I TOLD HIM NO BECAUSE HE WANTS ME TO PAY FOR IT . IT HAS ONE YEAR WARRANTY BUT MECHANIC KEEP SAYING ITS COMPUTER PROBLEM
     
    #5 JR GILL, Jun 6, 2022
  6. bisco

    bisco cookie crumbler

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    #6 bisco, Jun 6, 2022
  7. JR GILL

    JR GILL New Member

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    Vehicle:
    2010 Prius
    Model:
    III
    #7 JR GILL, Jun 6, 2022
  8. PriusCamper

    PriusCamper Senior Member

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    Our point is mechanic failed to successfully rebuild the engine. That's who has to figure it out. If they've given up and need it to go to the dealership than you're going to have to negotiate how much less you pay them for their failed rebuild.
     
    #8 PriusCamper, Jun 6, 2022
  9. bisco

    bisco cookie crumbler

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    yes
     
    #9 bisco, Jun 6, 2022
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