# Car shakes while driving and idling

**URL:** <https://community.cartalk.com/t/car-shakes-while-driving-and-idling/172095>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet\
**Created:** [November 8, 2020, 9:40pm UTC](https://community.cartalk.com/t/car-shakes-while-driving-and-idling/172095 "2020-11-08T21:40:30Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![ch4se\_172167](https://avatars.discourse-cdn.com/v4/letter/c/f05b48/32.png) [@ch4se\_172167](https://community.cartalk.com/u/ch4se_172167)\
**Post date:** [November 8, 2020, 9:40pm UTC](https://community.cartalk.com/t/car-shakes-while-driving-and-idling/172095/1 "2020-11-08T21:40:30Z")

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It started yesterday maybe 20 miles after I filled my tank with gas.

The car started shaking while i was driving at random every few seconds and the rpm fluctuates like crazy. The slightest press of the gas could shoot the rpm to over 3000 and then it drops back down.

At idle the car also shakes at random and will shut off sometimes, if I rev the engine every so often it keeps the car running.

Is it spark plug? Clogged fuel injector? Anything else?

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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:** [November 8, 2020, 9:45pm UTC](https://community.cartalk.com/t/car-shakes-while-driving-and-idling/172095/2 "2020-11-08T21:45:03Z")

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Is the Check Engine Light lit up?  
Or–much more serious-- is the CEL flashing?

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**Author:** ![ch4se\_172167](https://avatars.discourse-cdn.com/v4/letter/c/f05b48/32.png) [@ch4se\_172167](https://community.cartalk.com/u/ch4se_172167)\
**Post date:** [November 8, 2020, 9:45pm UTC](https://community.cartalk.com/t/car-shakes-while-driving-and-idling/172095/3 "2020-11-08T21:45:25Z")

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Neither. No lights

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<div class="post-metadata">

**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:** [November 8, 2020, 9:46pm UTC](https://community.cartalk.com/t/car-shakes-while-driving-and-idling/172095/4 "2020-11-08T21:46:03Z")

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What is the model and the model year of your Chevy?  
How many miles on the odometer?

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<div class="post-metadata">

**Author:** ![ch4se\_172167](https://avatars.discourse-cdn.com/v4/letter/c/f05b48/32.png) [@ch4se\_172167](https://community.cartalk.com/u/ch4se_172167)\
**Post date:** [November 8, 2020, 9:46pm UTC](https://community.cartalk.com/t/car-shakes-while-driving-and-idling/172095/5 "2020-11-08T21:46:15Z")

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2014 Chevy Cruze Eco

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<div class="post-metadata">

**Author:** ![ch4se\_172167](https://avatars.discourse-cdn.com/v4/letter/c/f05b48/32.png) [@ch4se\_172167](https://community.cartalk.com/u/ch4se_172167)\
**Post date:** [November 8, 2020, 9:47pm UTC](https://community.cartalk.com/t/car-shakes-while-driving-and-idling/172095/6 "2020-11-08T21:47:20Z")

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Its over 99,000 miles

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<div class="post-metadata">

**Author:** ![old\_mopar\_guy](https://avatars.discourse-cdn.com/v4/letter/o/6bbea6/32.png) [@old\_mopar\_guy](https://community.cartalk.com/u/old_mopar_guy)\
**Post date:** [November 8, 2020, 10:08pm UTC](https://community.cartalk.com/t/car-shakes-while-driving-and-idling/172095/7 "2020-11-08T22:08:36Z")

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My WAG would be a vacuum leak.

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<div class="post-metadata">

**Author:** ![MikeInNH](https://avatars.discourse-cdn.com/v4/letter/m/a587f6/32.png) [@MikeInNH](https://community.cartalk.com/u/MikeInNH)\
**Post date:** [November 9, 2020, 2:40pm UTC](https://community.cartalk.com/t/car-shakes-while-driving-and-idling/172095/8 "2020-11-09T14:40:52Z")

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Another possibility is bad gas.