post #1 of Old 10-16-2013, 08:36 PM Thread Starter
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  
post #2 of Old 10-17-2013, 07:10 AM
biffgnar's Avatar
2006 TJ Wrangler 
Join Date: May 2008
Location: Westchester, NY
Posts: 18,695
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.

Dakar Style Rally Raid in North America:
biffgnar is offline  
post #3 of Old 10-17-2013, 10:29 AM
Registered User
1995 ZJ 
Join Date: Mar 2005
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  

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may not post new threads
You may not 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 Off
Pingbacks are On
Refbacks are On

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