Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WJ > Troubleshooting/Problems

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 07-11-2011, 06:26 PM
Senior Member
My Jeep: 2004 4.0L WJ
 
Join Date: Feb 2010
Location: Woodbridge NJ/Staten Island NY
Posts: 6,827
Thanks: 5
Thanked 26 Times in 26 Posts
Rep Power: 26131
mrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond repute
Send a message via AIM to mrjaydeeone Send a message via Yahoo to mrjaydeeone
2000 4.7 weird sound (maybe brake related)

Guys looking for some help with my dad's WJ (2000 V8). He has told me about hearing a sound when he releases the brake pedal. Today I got to hear it 1st hand. When he takes his foot off the brake pedal you hear a low frequency buzzing sound. When foot is on the brake there is no sound, when released the sound starts. It's within the cabin, sounds like possibly under the drivers side of the dashboard. Sounds like something electronic. With the windows closed the sound is heard as well, so I don't think it is from outside. He also said that it seems to be lasting longer, and today at 1 point he had shut the jeep off, and pulled key from ignition and the sound continued.
Any ideas?
thanks in advance
__________________

__________________
Silver 2004 Jeep Grand Cherokee Special Edition I6 4.0
stock 'cept for
Pioneer Primere Deh-P840 headunit XMD-1000 (xm receiver) Audionbahn Bandpass Box with 2 Audiobahn 12" subs powered by Audiobahn Amp|
Escort 8500 X50 radar detector hardwired to auto dim rearview mirror|V3 projector headlights with 6K HIDs in Lows, 3K HIDs in Fogs|black brush guard & black nerf bars|Hyper White LEDs in interior lights, and Rear License Plate|16" JK unlimited wheels

Custom 2001 Mitsubishi Galant pics can be seen here
Reply With Quote
  #2  
Old 07-11-2011, 10:03 PM
Member
My Jeep: 2004 4.7L WJ
 
Join Date: Mar 2011
Location: Holden Beach, NC
Posts: 138
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1380
2004wjmedic is just really nice
Re: 2000 4.7 weird sound (maybe brake related)

Possibly the ABS???
__________________

__________________
[SIGPIC][/SIGPIC]
2004 Jeep Grand Cherokee 4.7 Quadradrive 20" WK2 Wheels
JL Audio XR650-CXI, JL AUDIO XR650-CSI, JL Audio C5-075ct, JL Audio 10w7v2, JL Audio HD900/5, Escort Passport 8500 X50 Blue Hardwired
Reply With Quote
  #3  
Old 07-12-2011, 09:55 AM
Frango100's Avatar
Premium Member

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 4,698
Thanks: 9
Thanked 57 Times in 55 Posts
Rep Power: 525514
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: 2000 4.7 weird sound (maybe brake related)

Can it be a vacuum leak from the brake booster? Will the sound stop after a minute or so after switching off the engine?
__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
Monroe Reflex shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #4  
Old 07-17-2011, 10:47 AM
Senior Member
My Jeep: 2004 4.0L WJ
 
Join Date: Feb 2010
Location: Woodbridge NJ/Staten Island NY
Posts: 6,827
Thanks: 5
Thanked 26 Times in 26 Posts
Rep Power: 26131
mrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond reputemrjaydeeone has a reputation beyond repute
Send a message via AIM to mrjaydeeone Send a message via Yahoo to mrjaydeeone
Re: 2000 4.7 weird sound (maybe brake related)

the sound didn't continue after the engine was shut off except for 1 time, but this sound has stopped for a couple days now, ugh. Now on Friday when he was driving, he had a new issue. The headlights were set to auto-on and he was driving around middle of the day and they came on and went off a couple of times. When he parked, he turned jeep off and before he exiting the lights came on. He then set the headlights to off. Gotta look into why they are coming on when they aren't required.
__________________
Reply With Quote
  #5  
Old 07-17-2011, 01:51 PM
Frango100's Avatar
Premium Member

My Jeep: 2004 4.7L WJ
 
Join Date: Dec 2009
Location: Brazil
Posts: 4,698
Thanks: 9
Thanked 57 Times in 55 Posts
Rep Power: 525514
Frango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond reputeFrango100 has a reputation beyond repute
Re: 2000 4.7 weird sound (maybe brake related)

The headlights are controlled via the BCM. The BCM uses a light sensor to switch the headlights in auto position. The sensor is mounted in the center of the defroster grill close to the windshield. Any dirt or something on it?
It can also be the multi function switch.
__________________
Frank

JEEP Grand Cherokee 4.7 Lmtd 2004
HID 8000K in low and fog / Quad Squad member
Monroe Reflex shocks / Pirelli Scorpion ATR 245/65/17 - Transgo reprogramming shiftkit.

VW Beetle 2.0 TSI 2013
My new toy
Reply With Quote
  #6  
Old 08-22-2011, 03:17 PM
bessniak's Avatar
Member
 
Join Date: Aug 2011
Posts: 33
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1109
bessniak is on a distinguished road
Re: 2000 4.7 weird sound (maybe brake related)

when your lights are on auto after the vehicle is turned off the headlights will stay for about 30 seconds on this is called follow me you can turn them off in upper console computer
__________________

__________________
Jeep rules !
Reply With Quote
Reply

Thread Tools
Display Modes

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 Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Weird sound??!? Msouza91 Troubleshooting/Problems 5 05-16-2011 11:02 PM
Weird electrical zapping sound on power down xtex404 Trouble Shooting/Problems/Service 4 03-17-2011 04:23 PM
weird sound when driving? hmmmm16417 Grand Cherokee - WK 27 02-07-2011 12:16 PM
Weird 4wd and brake issue baldeagle432 Grand Cherokee - WK 10 11-24-2010 09:27 AM
weird sound when turning skinny Grand Cherokee - WK2 - 10 10-13-2010 05:19 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 06:49 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community