Shaking When Power Being Used (Lights, A/C, Defroster)
09-09-2011
#1
Registered!!
Thread Starter
Shaking When Power Being Used (Lights, A/C, Defroster) I have an 03 EP3.
When I'm idling at a red light or just in my driveway, the car is fine. But when I A. Turn the headlights on B. Turn the A/C on, or C. Turn the rear defroster on, the car shakes. When I do any combination of those, it shakes even more, especially the A/C being on. I dont know if it does when window motors are being used, I forgot to try that.
It's like whenever theres more power being used than just normal running, it shakes no matter what.
I can't tell if the shaking is still there when the car is actually moving.
Any ideas?
When I'm idling at a red light or just in my driveway, the car is fine. But when I A. Turn the headlights on B. Turn the A/C on, or C. Turn the rear defroster on, the car shakes. When I do any combination of those, it shakes even more, especially the A/C being on. I dont know if it does when window motors are being used, I forgot to try that.
It's like whenever theres more power being used than just normal running, it shakes no matter what.
I can't tell if the shaking is still there when the car is actually moving.
Any ideas?
09-09-2011
#2
Registered!!
Join Date: May 2010
Location: Funkytown, Tx
Posts: 3,662
Likes: 0
Received 2 Likes
on
2 Posts
Rep Power: 210 
Re: Shaking When Power Being Used (Lights, A/C, Defroster)
You have a power problem, when you turn something on it pulls enough amps to where the engine stumbles because it doesn't have enough power to cause spark. Take it down to Autozone and have the alternator checked. They will check it for free.
Last edited by lazlong; 09-09-2011 at 09:21 PM.
09-09-2011
#3
Premium Member
Hey! Look At Me!! I'm a Supporting Member!!
iTrader: (95)
Join Date: Sep 2002
Location: NV
Age: 43
Posts: 51,241
Likes: 0
Received 18 Likes
on
13 Posts
Rep Power: 787 Re: Shaking When Power Being Used (Lights, A/C, Defroster)
this happens when the IAC valve is clogged as well. it is tied to several systems and should bump the idle up when intensive accessories are used. if it doesnt, the car can rumble and sometimes stall.
09-10-2011
#5
Premium Member
Hey! Look At Me!! I'm a Supporting Member!!
iTrader: (95)
Join Date: Sep 2002
Location: NV
Age: 43
Posts: 51,241
Likes: 0
Received 18 Likes
on
13 Posts
Rep Power: 787 Re: Shaking When Power Being Used (Lights, A/C, Defroster)
i cant remember everything thats tied to it. i know the brake light switch and a/c for sure, but there are a few others. that valve has lots of responsibility lol
Thread
Thread Starter
Honda Civic Forum
Replies
Last Post
dinsum
Mechanical Problems/Vehicle Issues and Fix-it Forum
11
05-28-2015 09:30 PM
trellex
Mechanical Problems/Vehicle Issues and Fix-it Forum
5
05-24-2015 04:39 PM
Pir8pete
General Honda Civic Forum Archive.
165
03-06-2009 05:16 PM
Hobby2K
Bolt-on Engine Performance
2
11-09-2001 04:08 PM
