Lights pulse or flicker when accelerating - Chevy Impala Forums
Mechanical and Electrical Problems Having problems with your Chevy Impala? Discuss it here.

User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 03-21-2019 Thread Starter
Junior Member
 
headrocker07's Avatar
 
Join Date: Mar 2019
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Lightbulb Lights pulse or flicker when accelerating

2016 Impala Limited LT 3.6 V6 70k miles
When I'm accelerating, my headlights (and I assume taillights as well) pulsate. The overhead dome light is also affected. Dash lights do not pulsate. This all started happening after I had an alternator and battery go out on me, leaving me with a dead car. Warranty covered a replacement of both. Since then I notice the problem when I merge onto highways or press the gas more than 10%. In park, if I rev the engine to around 1.5k or 2k rpm, I notice the interior dome light doing the same thing. When the car is idling, there is no pulsing that is enough to cause concern.

I have a dash camera running through my OBD port with an adapter. I had it installed after my window was broken. I had a car audio shop install a 10" powered Sub/Amp. The camera was on my car since before my alternator and battery went out, the audio equipment was installed after new alternator and battery.

I turned off all accessories, pulled the fuse on my amp, unplugged my camera, and still I notice a pulsing when I rev over 1500 rpm. I noticed I could force the lights to stop pulsing if I act like I/m rolling my windows up.

I work at a GM dealership, and I've asked around my shop, and none of the technicians have any other ideas.

Am I putting too much load on my alternator? Do I need a bigger battery than stock?

Last edited by headrocker07; 03-21-2019 at 07:25 AM. Reason: add more info to title
headrocker07 is offline  
Sponsored Links
Advertisement
 
post #2 of (permalink) Old 03-21-2019
Super Moderator
 
jtrosky's Avatar
 
Join Date: Jun 2013
Location: West Grove, PA
Posts: 12,386
Mentioned: 73 Post(s)
Tagged: 0 Thread(s)
Quoted: 919 Post(s)
Thanks: 992
Thanked 2,294 Times in 1,792 Posts
Garage
Almost sounds like vibrations causing the issue - as in when the motors revs enough, it increases vibrations and is maybe causing a loose connection to become "intermittent"...

Just something to consider... Usually, flickering lights occur more at idle than at higher RPMs (when dealing with lack of power) - as more RPMs allow the alternator to generate more power.
jtrosky is online now  
post #3 of (permalink) Old 03-23-2019 Thread Starter
Junior Member
 
headrocker07's Avatar
 
Join Date: Mar 2019
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
It could be but remember, i can fool the car somehow by using my window switches while the pulsing happens. It goes away until i stop using a window switch.
headrocker07 is offline  
Sponsored Links
Advertisement
 
Reply

Related Threads
Thread Thread Starter Forum Replies Last Post
Get back the original look of your Impala with Replace OE Lights + Video carid CARiD.com 0 03-27-2019 07:33 AM
The SPYDER custom tail lights are not built to last. Lots of problems in design - 37865835235 Chevy Impala 9th Gen Discussion 8 03-14-2019 05:31 PM
20062016 Eagle Eyes Blackout Projector Head Lights & LED Tail Lights For Sale - $200 soundsmith Private For Sale Classifieds 2 01-04-2019 02:55 PM
2007 Chevy impala, Lights blinkning and doors locking constantly Haukr Autocare and Maintenance 0 10-21-2018 12:39 PM
Aftermarket LED fog lights not very secure [email protected] Chevy Impala 9th Gen Discussion 4 07-23-2018 11:06 AM


Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevy Impala Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome