# 03 impala jerks a bit when accelerating

**URL:** <https://community.cartalk.com/t/03-impala-jerks-a-bit-when-accelerating/117770>\
**Category:** Maintenance/Repairs\
**Created:** [May 21, 2018, 5:32pm UTC](https://community.cartalk.com/t/03-impala-jerks-a-bit-when-accelerating/117770 "2018-05-21T17:32:03Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Denise\_Morrissette](https://avatars.discourse-cdn.com/v4/letter/d/b2d939/32.png) [@Denise\_Morrissette](https://community.cartalk.com/u/Denise_Morrissette)\
**Post date:** [May 21, 2018, 5:32pm UTC](https://community.cartalk.com/t/03-impala-jerks-a-bit-when-accelerating/117770/1 "2018-05-21T17:32:03Z")

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My sons 03 Impala was jerking very bad and check engine light came on. Based on the codes the solenoids were replaced and new fluids put in. However a few days later it started lightly jerking again and you can feel a hard shift into the next gear when accelerating, but the check engine light has not come on. Any ideas on what would cause this issue?

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**Author:** ![Yosemite](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/yosemite/32/643_2.png) [@Yosemite](https://community.cartalk.com/u/Yosemite)\
**Post date:** [May 23, 2018, 2:07am UTC](https://community.cartalk.com/t/03-impala-jerks-a-bit-when-accelerating/117770/2 "2018-05-23T02:07:43Z")

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> [@Denise\_Morrissette](#):
>
> solenoids

What solenoids were replaced. Starter?

What codes did you get.

New fluids would not have any effect on a car jerking.

Spark plugs, dirty air filter, contaminated fuel, poor fuel pressure, all could.

Yosemite

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**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:** [May 23, 2018, 2:08am UTC](https://community.cartalk.com/t/03-impala-jerks-a-bit-when-accelerating/117770/3 "2018-05-23T02:08:32Z")

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I’m presuming some transmission solenoids were replaced. But that hasn’t done the job. If the shop has isolated this to the transmission (and presuming an automatic), probably start with a proper transmission service. If it helps but doesn’t fix it 100%, drive 100 miles and do it again. Still got a problem? You need a transmission expert at that point. They’ll probably measure the transmission fluid pressure at several test ports.