Jeep vibrates when idle with AC on -
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back > General Technical Discussions > Engines & Drivetrain > Jeep vibrates when idle with AC on

Win this 2015 Jeep !!Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineHigh Quality Light Bars at a Lower Price!!!!

Unread 10-16-2013, 08:36 PM   #1
Registered User
Join Date: Feb 2008
Location: OHIO
Posts: 5
Jeep vibrates when idle with AC on

I have a 2013 Grand Cherokee and recently noticed a vibration when the AC is on and I'm idle at a stop light. It makes a low hum like noise and I think I can feel a vibration in the break pedal. Anyone else experience this or know what it is?

LoOpS is offline   Reply With Quote Quick reply to this message
Unread 10-17-2013, 07:10 AM   #2
Web Wheeler
biffgnar's Avatar
2006 TJ Wrangler 
Join Date: May 2008
Location: Westchester, NY
Posts: 16,970
Sounds to me a like an issue with the AC pulley. When you turn the AC on the clutch engages and adds load to the belt if its not spinning true it will vibe. Either that or a bracket that holds the AC pump maybe be loose. Again when the clutch engages the pressure from the belt would be vibrating the loose bracket.
Thank you Dave Cole, Dynomax, Falken and all the Spec Class sponsors!!
biffgnar is offline   Reply With Quote Quick reply to this message
Unread 10-17-2013, 10:29 AM   #3
Registered User
1995 ZJ 
Join Date: Mar 2005
Location: , Suffolk, NY
Posts: 957
Could just be the idle up solenoid isn't working and you're a/c is lugging the motor.

But we could guess all day since you didn't give any details like your rpm isn't dropping whether it's with or without the a/c on.
1995 Jeep gc ltd, 2005 Jeep gc ltd , 71 Dart, 73 RR 440-6pk, 78 Mag GT, 85 Power Ram W-350, 92 Daytona, 99 Dakota, 08 Ram 2500

Less than 8 is like playing with half a deck
Long Island Motorsports Association
Evildriver-3 is offline   Reply With Quote Quick reply to this message

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. is not in any way associated with Jeep or the Chrysler Corp.