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spark plug gap

Can also be a vacuum leak.

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11y ago
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Q: Why would your car shake when you are idling and have the AC on but not when you are driving?
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Related questions

Can spark plugs cause car to shake?

Yes, when idling and driving.


What would cause your car to shake when idling reversing and driving?

Sounds like a misfire caused by electric supply to plugs.


Why would a car vibrate or shake sometimes while idling and whle driving 65-70mph?

Loose motor mounts.


Can bad muffler cause car to shake when idling?

A clogged muffler can.


What would make a car shake when it is idling?

Is the car running ok? If yes and its only the vibration that's an issue most likely cause is motor mount(s)


Why does my car shake when idling at a red light?

There are a few reasons why a car shakes when idling at a red light. Some reasons could be the ignition coil, motor mounts, or spark plug problems.


Does your car use more gas idling or driving down the street?

It depends on how long you are idling, or how fast you are going. If you know you are going to be idling for a long time, it's best just to put your car in park.


What causes a car steering wheel to shake when driving at 30 mph?

i would really like to know myself


Can the rim or tire cause the car to shake or vibrate?

Yes, either can cause a shake while driving.


Why would the steering wheel on your car shake?

If it happens when you are driving fast (60-70 MPH) it could be that your wheels are out of alignment.


What causes the steering wheel to shake back and forth when car is idling?

Your power steering pump and or steering box may be about to give out on you.


How do you fix your car that's running bad?

This is a very general answer, as I don't know what "running bad" means. I would start by changing the oil filter and filling it with new oil. I find that quaker state is the best. Next, I would change the spark plugs. Bad spark plugs and low oil can often cause a car to jerk and shake whether your driving or just idling.