# Car jerks hard

**URL:** <https://community.cartalk.com/t/car-jerks-hard/40341>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet, lumina\
**Created:** [December 4, 2009, 2:31pm UTC](https://community.cartalk.com/t/car-jerks-hard/40341 "2009-12-04T14:31:35Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![fifity50](https://avatars.discourse-cdn.com/v4/letter/f/da6949/32.png) [@fifity50](https://community.cartalk.com/u/fifity50)\
**Post date:** [December 4, 2009, 2:31pm UTC](https://community.cartalk.com/t/car-jerks-hard/40341/1 "2009-12-04T14:31:35Z")

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My car is jerking really hard when I put it into Gear it runs smoothly. I am wondering if it might be the ENG or transmission Mounts gone bad?

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**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\
**Post date:** [December 4, 2009, 2:44pm UTC](https://community.cartalk.com/t/car-jerks-hard/40341/2 "2009-12-04T14:44:44Z")

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Your first sentence is not clear in its description, but if you are experiencing a hard jerk when putting the car into Drive or Reverse, then motor mounts and/or transmission mounts should be checked.

I assume that you have verified that the idle speed is within normal limits.  
If the engine is idling very high, that would also produce this problem.

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**Author:** ![fifity50](https://avatars.discourse-cdn.com/v4/letter/f/da6949/32.png) [@fifity50](https://community.cartalk.com/u/fifity50)\
**Post date:** [December 7, 2009, 1:58pm UTC](https://community.cartalk.com/t/car-jerks-hard/40341/3 "2009-12-07T13:58:48Z")

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Yes the Idle is within normal limits I was assuming the Mounts on either the ENg or the Xmission are gone bad. I will check them out thanks for your assistance.