# Shifts hard and sometimes shifts smoothly

**URL:** <https://community.cartalk.com/t/shifts-hard-and-sometimes-shifts-smoothly/82160>\
**Category:** Maintenance/Repairs\
**Created:** [November 9, 2013, 8:34pm UTC](https://community.cartalk.com/t/shifts-hard-and-sometimes-shifts-smoothly/82160 "2013-11-09T20:34:18Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![mwkarrick](https://avatars.discourse-cdn.com/v4/letter/m/51bf81/32.png) [@mwkarrick](https://community.cartalk.com/u/mwkarrick)\
**Post date:** [November 9, 2013, 8:34pm UTC](https://community.cartalk.com/t/shifts-hard-and-sometimes-shifts-smoothly/82160/1 "2013-11-09T20:34:18Z")

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i have a 2001 saturn l200 2.2 about 160000 miles…sometimes when i drive the car it shifts hard and sometimes it shifts smoothly…i did have new transmission fluid and new filter put in…i did have transmission scan for codes and there was no codes…i do have a engine code came up it was Crankshaft Position Sensor…cud a Crankshaft Position Sensor cause a car to shifts hard sometimes…

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**Author:** ![circuitsmith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/circuitsmith/32/40376_2.png) [@circuitsmith](https://community.cartalk.com/u/circuitsmith)\
**Post date:** [November 9, 2013, 8:37pm UTC](https://community.cartalk.com/t/shifts-hard-and-sometimes-shifts-smoothly/82160/2 "2013-11-09T20:37:53Z")

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A problem with the engine can confuse operation of the transmission, especially if the trans is electronically controlled.  
So get the engine problem sorted out and cross your fingers.

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**Author:** ![mwkarrick](https://avatars.discourse-cdn.com/v4/letter/m/51bf81/32.png) [@mwkarrick](https://community.cartalk.com/u/mwkarrick)\
**Post date:** [November 9, 2013, 8:48pm UTC](https://community.cartalk.com/t/shifts-hard-and-sometimes-shifts-smoothly/82160/3 "2013-11-09T20:48:04Z")

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i do know i have alot of Engine Vibrations when im at a stop light

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**Author:** ![knfenimore](https://avatars.discourse-cdn.com/v4/letter/k/9fc348/32.png) [@knfenimore](https://community.cartalk.com/u/knfenimore)\
**Post date:** [November 9, 2013, 8:51pm UTC](https://community.cartalk.com/t/shifts-hard-and-sometimes-shifts-smoothly/82160/4 "2013-11-09T20:51:05Z")

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If you have a crank pos sensor fault it will idle poorly and confuse the computer.

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**Author:** ![mwkarrick](https://avatars.discourse-cdn.com/v4/letter/m/51bf81/32.png) [@mwkarrick](https://community.cartalk.com/u/mwkarrick)\
**Post date:** [November 9, 2013, 8:56pm UTC](https://community.cartalk.com/t/shifts-hard-and-sometimes-shifts-smoothly/82160/5 "2013-11-09T20:56:06Z")

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i will get that replace today and see what happen