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Engine Low power

Tiny
STELLA HERMAN-MATA
  • MEMBER
  • 2011 TOYOTA PRIUS
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 122,900 MILES
All warning lights are on. Can drive car, I already changed the 12V battery per one mechanic. When taking off from a stop or going up hill the car starts loosing power until I get to the top then it picks up speed. I notice I am running on gas only because I waste more gas per week. Any ideas what is wrong? It has no problem starting or driving it just do not have the power the car is still running the same way even after buying and replacing the new battery.
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Saturday, April 15th, 2017 AT 3:20 PM

2 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,949 POSTS
Hello,

It sounds like you have a plugged catalytic converter, Here is a guide so you can test it to see if I'm correct.

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Please run this test and get back to us so we can continue helping you.

Best, Ken

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Monday, April 17th, 2017 AT 4:35 PM
Tiny
STEVE W.
  • MECHANIC
  • 12,998 POSTS
What is the display saying as far as the battery system providing power? It sounds like you may have a controller failure that is making it run only on gas. For that you need a good shop or dealer who knows the hybrid drive system. Not an uncommon failure on the Prius.
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Wednesday, April 19th, 2017 AT 9:35 PM

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