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 07-13-2009, 01:06 PM
New Member
 
Join Date: Jul 2009
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Perfectbackstage is on a distinguished road
high pitch noise, losing coolant 2004 Laredo

I have a 2004 Jeep Grand Cherokee Laredo 4.0 I6 that i bought about a year ago, it has been making a strange sound sometimes when i lift of the gas pedal. Its a high pitched whining sound that will stop as soon as i step on the gas again, i have asked mechanics about it but since it doesnt do it all the time and i can never really show them and they have no idea what the problem is.
Also in a possibly related problem, i have been losing lots of coolant randomly, it will keep a full reservoir for a long time then in very short time it will suddenly be below the fill mark.

any suggestions or ideas would be greatly appreciated for i love my jeep like a family member and dont want it to hurt anymore lol
__________________

__________________
Reply With Quote
  #2  
Old 07-13-2009, 01:10 PM
Dylans3960ccs's Avatar
Senior Member
 
Join Date: Jun 2009
Location: Alpharetta ,GA
Posts: 3,808
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 5746
Dylans3960ccs has a reputation beyond reputeDylans3960ccs has a reputation beyond reputeDylans3960ccs has a reputation beyond reputeDylans3960ccs has a reputation beyond repute
Re: high pitch noise, losing coolant 2004 Laredo

Quote:
Originally Posted by Perfectbackstage View Post
I have a 2004 Jeep Grand Cherokee Laredo 4.0 I6 that i bought about a year ago, it has been making a strange sound sometimes when i lift of the gas pedal. Its a high pitched whining sound that will stop as soon as i step on the gas again, i have asked mechanics about it but since it doesnt do it all the time and i can never really show them and they have no idea what the problem is.
Also in a possibly related problem, i have been losing lots of coolant randomly, it will keep a full reservoir for a long time then in very short time it will suddenly be below the fill mark.

any suggestions or ideas would be greatly appreciated for i love my jeep like a family member and dont want it to hurt anymore lol
I think that all of them make that noise,so it's not a problem. As for the coolant you might want to replace of the hoses for leaks, and my knowdege ends there.

Oh ,and Welcome to JG!
__________________

__________________
Reply With Quote
  #3  
Old 07-13-2009, 01:14 PM
Hitchhiking
 
Join Date: Jun 2009
Location: CT
Posts: 572
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
LO.7 has a spectacular aura about
Re: high pitch noise, losing coolant 2004 Laredo

Sounds like it could be your differentials making that high pitched noise.
__________________
Reply With Quote
  #4  
Old 07-13-2009, 01:14 PM
Dylans3960ccs's Avatar
Senior Member
 
Join Date: Jun 2009
Location: Alpharetta ,GA
Posts: 3,808
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 5746
Dylans3960ccs has a reputation beyond reputeDylans3960ccs has a reputation beyond reputeDylans3960ccs has a reputation beyond reputeDylans3960ccs has a reputation beyond repute
Re: high pitch noise, losing coolant 2004 Laredo

probably is.
__________________
Reply With Quote
  #5  
Old 07-13-2009, 02:03 PM
Member
 
Join Date: Jun 2009
Location: Columbus,NJ
Posts: 222
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 2116
saleen032 has a reputation beyond reputesaleen032 has a reputation beyond repute
Send a message via AIM to saleen032
Re: high pitch noise, losing coolant 2004 Laredo

+1 on the differentials. Especially since it only does it under coasting conditions... As afr as the coolant, do you see signs of leaks? Anypuddles under the truck after it sits for a bit? Check your oil...Does it look normal or does it look like a milk shake? If it looks like a milk shake, then you could have a head gasket problem....OR it could be going out the exhaust...also a head gasket problem...
__________________
Reply With Quote
  #6  
Old 07-13-2009, 02:30 PM
Member
 
Join Date: Jul 2009
Posts: 35
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1878
Nand12 is on a distinguished road
Re: high pitch noise, losing coolant 2004 Laredo

+2 on the whining noise coming from one or both differentials (most likely the rear differential)...you can either live with it or rebuild the differential (since it's likely that you have the 7/70 powertrain warranty, make the dealer rebuild it so all you're out of is a $100 deductible). Like the above posts have said, the coolant leak could be coming from anywhere so you need to start poking around the engine compartment (and under it) to see if you can spot it. Do you notice a sweet smelling mist residue on your windshield? Also, does your exhaust smell slightly sweet? Post back with what you find and we can start narrowing down the possibilities.
__________________
Reply With Quote
  #7  
Old 07-13-2009, 03:24 PM
New Member
 
Join Date: Jul 2009
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Perfectbackstage is on a distinguished road
Re: high pitch noise, losing coolant 2004 Laredo

Thanks for all the input so far guys

ill definitely look into the differentials because now that you guys mention that it makes a lot of sense

as for the coolant, i dont ever see any of it leaking beneath the car and my oil is good and clean, ill have to look closer at the hoses it goes through i guess
__________________
Reply With Quote
  #8  
Old 07-13-2009, 04:25 PM
Long Live the Graphite Ghost

 
Join Date: May 2009
Posts: 13,395
Thanks: 55
Thanked 131 Times in 113 Posts
Rep Power: 542543
robpp has disabled reputation
Re: high pitch noise, losing coolant 2004 Laredo

coolant could be a very small head gasket leak.

at certain temps and condidtions it lets out some coolant, the defect is so small, it disperses the coolant into a mist.
__________________
Reply With Quote
  #9  
Old 07-13-2009, 05:04 PM
dreamer1213's Avatar
Founding Member
 
Join Date: May 2009
Location: Jacksonville, FL
Posts: 918
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 2823
dreamer1213 has a reputation beyond reputedreamer1213 has a reputation beyond repute
Re: high pitch noise, losing coolant 2004 Laredo

Have your radiator cap tested to see if its holding the right amount of pressure...if the cap doesn't hold the right amount pressure, the engine will push the coolant out of the radiator..then it sucks coolant out of the recovery bottle....

Does the Jeep smoke a little (white smoke) when you start it? Or drive it?
__________________
{ Hannes }

02 WJ Overland 4.7L H.O V8

Reply With Quote
  #10  
Old 07-13-2009, 06:12 PM
New Member
 
Join Date: Jul 2009
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Perfectbackstage is on a distinguished road
Re: high pitch noise, losing coolant 2004 Laredo

no smoke that i have noticed when i drive it and i did have a problem with the cap holding pressure a few months back but it was replaced and checked by the guys who do my oil changes.
__________________
Reply With Quote
  #11  
Old 07-13-2009, 07:14 PM
dreamer1213's Avatar
Founding Member
 
Join Date: May 2009
Location: Jacksonville, FL
Posts: 918
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 2823
dreamer1213 has a reputation beyond reputedreamer1213 has a reputation beyond repute
Re: high pitch noise, losing coolant 2004 Laredo

Ooooookkk then...rule out my opinion...lol!!
__________________
{ Hannes }

02 WJ Overland 4.7L H.O V8

Reply With Quote
  #12  
Old 07-13-2009, 09:05 PM
New Member
 
Join Date: Jul 2009
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Perfectbackstage is on a distinguished road
Re: high pitch noise, losing coolant 2004 Laredo

really appreciate the feedback guys, gonna check out that differential and just keep an eye on the coolant situation

thx again!
__________________

__________________
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
Coolant spray is gone! hawkman996 Trouble Shooting/Problems/Service 20 07-09-2011 02:09 PM
My 08 Laredo 4.7 sousa Members Rides 7 04-27-2010 12:18 PM
2004 Front Lower Grill insert????!!! Big Perm Interior/Exterior/Visual 7 07-08-2009 10:57 AM
SRT8 interior noise clip mandan007 Members Rides 3 06-29-2009 07:34 PM
Video: In Cabin Noise Robert Palmer Members Rides 38 06-17-2009 12:56 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 09:35 AM.


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