# 2010 Toyota Prius - Running rough **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** engines, toyota\ **Created:** [July 25, 2021, 12:04pm UTC](https://community.cartalk.com/t/2010-toyota-prius-running-rough/178237 "2021-07-25T12:04:42Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![942vine](https://avatars.discourse-cdn.com/v4/letter/9/54ee81/32.png) [@942vine](https://community.cartalk.com/u/942vine)\ **Post date:** [July 25, 2021, 12:04pm UTC](https://community.cartalk.com/t/2010-toyota-prius-running-rough/178237/1 "2021-07-25T12:04:42Z")
engine vibrates runs rough ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [July 25, 2021, 2:17pm UTC](https://community.cartalk.com/t/2010-toyota-prius-running-rough/178237/2 "2021-07-25T14:17:37Z")
That’s exactly what you should tell the service writer at your Toyota dealer or independent mechanic. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [July 25, 2021, 5:56pm UTC](https://community.cartalk.com/t/2010-toyota-prius-running-rough/178237/3 "2021-07-25T17:56:56Z")
Have someone try cleaning the electronic throttle body. ![image](https://global.discourse-cdn.com/cartalk/original/3X/1/e/1e22848130fa6b2adccaf19680d6f289a638eba0.jpeg) Tester ---
**Author:** ![thegreendrag0n](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/thegreendrag0n/32/9265_2.png) [@thegreendrag0n](https://community.cartalk.com/u/thegreendrag0n)\ **Post date:** [July 26, 2021, 7:00pm UTC](https://community.cartalk.com/t/2010-toyota-prius-running-rough/178237/4 "2021-07-26T19:00:15Z")
> [@942vine](#): > > engine vibrates runs rough what the mileage? spark plugs are due to be replaced at 115-120K miles from what I recollect and although my set lasted to 130K miles, it was running a little rough and upon replacement it’s noticeably smoother another “usual” problem in Gen2 generation is in the mass airflow sensor, which is located right under the air filter and if whoever replaces the filter and is not careful enough not to dump some dust and dirt down, it’s “usual” for this setup to end up in partially clogged MAF sensor and rough ride after that ---
**Author:** ![lion9car](https://avatars.discourse-cdn.com/v4/letter/l/59ef9b/32.png) [@lion9car](https://community.cartalk.com/u/lion9car)\ **Post date:** [July 26, 2021, 7:52pm UTC](https://community.cartalk.com/t/2010-toyota-prius-running-rough/178237/5 "2021-07-26T19:52:37Z")
Is the check-engine light on? ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [July 26, 2021, 11:12pm UTC](https://community.cartalk.com/t/2010-toyota-prius-running-rough/178237/6 "2021-07-26T23:12:48Z")
Idle rpm only? Or during driving? Both? Any engine computer diagnostic codes? ---
**Author:** ![thegreendrag0n](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/thegreendrag0n/32/9265_2.png) [@thegreendrag0n](https://community.cartalk.com/u/thegreendrag0n)\ **Post date:** [July 26, 2021, 11:20pm UTC](https://community.cartalk.com/t/2010-toyota-prius-running-rough/178237/7 "2021-07-26T23:20:53Z")
> [@George\_San\_Jose1](#): > > Idle rpm only? this is hybrid, so no “idle” it either works and pumps juice or gets into the engine stop ---
**Author:** ![942vine](https://avatars.discourse-cdn.com/v4/letter/9/54ee81/32.png) [@942vine](https://community.cartalk.com/u/942vine)\ **Post date:** [July 27, 2021, 12:29am UTC](https://community.cartalk.com/t/2010-toyota-prius-running-rough/178237/8 "2021-07-27T00:29:06Z")
130k & plugs are old ---
**Author:** ![thegreendrag0n](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/thegreendrag0n/32/9265_2.png) [@thegreendrag0n](https://community.cartalk.com/u/thegreendrag0n)\ **Post date:** [July 27, 2021, 12:30am UTC](https://community.cartalk.com/t/2010-toyota-prius-running-rough/178237/9 "2021-07-27T00:30:50Z")
replace them, with OEM-specified iridium type, but @Tester gave another great advise above about cleaning the throttle body, definitely worth few pennies on the solvent and paper towels my spark plugs made it to 133K miles actually and one had visually wider gap, that’s probably what caused the rough operations… otherwise plugs were in great shape ---
**Author:** ![942vine](https://avatars.discourse-cdn.com/v4/letter/9/54ee81/32.png) [@942vine](https://community.cartalk.com/u/942vine)\ **Post date:** [July 27, 2021, 12:32am UTC](https://community.cartalk.com/t/2010-toyota-prius-running-rough/178237/10 "2021-07-27T00:32:06Z")
Idle & intermittent while driving got more frequent so parked it ---
**Author:** ![wolyrobb](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/wolyrobb/32/45497_2.png) [@wolyrobb](https://community.cartalk.com/u/wolyrobb)\ **Post date:** [July 27, 2021, 2:39am UTC](https://community.cartalk.com/t/2010-toyota-prius-running-rough/178237/11 "2021-07-27T02:39:24Z")
Mom’s 2010 Prius hasn’t experienced this yet but if it did the first stop would be the independent mechanic to be fixed. ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [July 27, 2021, 12:18pm UTC](https://community.cartalk.com/t/2010-toyota-prius-running-rough/178237/12 "2021-07-27T12:18:25Z")
> [@942vine](#): > > Idle & intermittent while driving got more frequent so parked it Unlike animals, cars do not get better with rest and relaxation.