# Low power under load **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** chevrolet, impala\ **Created:** [July 3, 2010, 1:26am UTC](https://community.cartalk.com/t/low-power-under-load/51210 "2010-07-03T01:26:57Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![GumperSC](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/gumpersc/32/1898_2.png) [@GumperSC](https://community.cartalk.com/u/GumperSC)\ **Post date:** [July 3, 2010, 1:26am UTC](https://community.cartalk.com/t/low-power-under-load/51210/1 "2010-07-03T01:26:57Z")
2001 CHEVROLET LUMINA V6- 3400 64,000 miles. Car has low power giong up hills. If you press gas pedel to floor car will down shift and Check engin flashes. I plan to get code read Saturday. ---
**Author:** ![GumperSC](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/gumpersc/32/1898_2.png) [@GumperSC](https://community.cartalk.com/u/GumperSC)\ **Post date:** [July 4, 2010, 3:10am UTC](https://community.cartalk.com/t/low-power-under-load/51210/2 "2010-07-04T03:10:22Z")
No ccodes found. Spark plugs replaced air filter and fuel filter replaced. Improved power. ---
**Author:** ![mark9207](https://avatars.discourse-cdn.com/v4/letter/m/71c47a/32.png) [@mark9207](https://community.cartalk.com/u/mark9207)\ **Post date:** [July 4, 2010, 8:32am UTC](https://community.cartalk.com/t/low-power-under-load/51210/3 "2010-07-04T08:32:25Z")
If you didn’t replace the spark plug wires at the same time as the plugs, you should consider doing that too. Those wires are in a very high heat environment and can easily be compromised, resulting in more misfire problems. A flashing check engine light means the engine is misfiring, so I’m very surprised you got no codes.