Vibrating Aveo

[Geo]

So recently I've noticed that Whenever I turn on the AC/Heat my car vibrates a little. This also happens when I brake while reversing ans well as when I'm stopped at a light.

Does anyone else have this problem? Any fixes to this?

[MetroMPG]

I'm guessing this is an automatic.

Sounds to me like engine RPM dropping when adding a load (AC) or while stopped, in gear. (Probably normal, unless your idle speed is way out of spec.)

Try this: next time it's vibrating when you're stopped in Drive or Reverse, shift to neutral. Does the vibration go away?

[Geo]

I'm guessing this is an automatic.

Sounds to me like engine RPM dropping when adding a load (AC) or while stopped, in gear. (Probably normal, unless your idle speed is way out of spec.)

Try this: next time it's vibrating when you're stopped in Drive or Reverse, shift to neutral. Does the vibration go away?

Blah! The problem still exists lol

[mourioz]

Change the spark, it will help.

[Geo]

I had it changed back in october.. At least that's what I what I paid for

[Aveo5_boy]

Depends on the type of plugs installed....I was also experiencing stronger than normal vibrations in park/idle and was using the NGK iridium plugs. I decided to switch to a new set of NGK copper plugs (as original) and the vibration seems to have normalized to the same amount of vibration when I bought the car. For best results stick with the plugs that are recommended for your vehicle....check it out in your owners manual under the section Capacities and Specifications.

Here is a link you can read on causes of engine vibration: 5 Causes of Engine Vibration - CarsDirect

[mourioz]

Use spark from GM , cause its have 2 lid. Another spark just 1 lid and not as strong the GM spark.
Sorry for my bad English.

[Geo]

Use spark from GM , cause its have 2 lid. Another spark just 1 lid and not as strong the GM spark.
Sorry for my bad English.

Thanks man!

[Geo]

Depends on the type of plugs installed....I was also experiencing stronger than normal vibrations in park/idle and was using the NGK iridium plugs. I decided to switch to a new set of NGK copper plugs (as original) and the vibration seems to have normalized to the same amount of vibration when I bought the car. For best results stick with the plugs that are recommended for your vehicle....check it out in your owners manual under the section Capacities and Specifications.

Here is a link you can read on causes of engine vibration: 5 Causes of Engine Vibration - CarsDirect

Thanks! I believe the guy at goodyear said something about platinum spark plugs