idle goes low and car vibrate when electronics are on

[dannieboiz]

I noticed that when I turn on my fan, or any power hogging components the car would either idle low or run rough. What does that mean? Battery or Alternator?

 

[EK|B]

I would think alternator, get them both checked out.

 

[dorifto83]

I noticed that when I turn on my fan, or any power hogging components the car would either idle low or run rough. What does that mean? Battery or Alternator?

What's low or rough, more specifically what rpms is it revving at? You can't expect your car to idle perfectly if you have an increased load while it's idling.

 

[dannieboiz]

the car vibrates really bad, not unnecessarily low idle. Just not exactly sure how to word it. You can definitely feel the difference.

 

[Civic2007]

that happened to me right before my ac compressor went out, but it was only when i turned the ac on

 

[Raabe]

my car started stuttering really bad, and the battery light would flicker as if i stalled out when im idleing on a warmer day with AC and the radio playing at a respectable volume... my problem was the battery

 

[Suanico]

im going to go with alternator, do you have aem pulleys?

 

[dannieboiz]

my car is bone stock. When I rev the engine, things goes back to normal.