Whistling sound possibly(probably) coming from engine bay. - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > General Jeep Discussions > General Jeep Discussion

Join Wrangler Forum Today



Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 11-26-2011, 12:46 AM
Thread Starter
  #1
Newb
 
Join Date: Nov 2011
Posts: 14
Alphacaveman is on a distinguished road
Whistling sound possibly(probably) coming from engine bay.

Just bought my first jeep, an 02 sport. After I have been driving for a little bit there is an annoying whistling sound when I let off of the accelerator. Can anyone tell me what that could be and a possible fix? Thanks
__________________
2002 Wrangler Sport
Alphacaveman is offline   Quote
Old 11-26-2011, 01:17 AM   #2
Motorized toy collector

WF Supporting Member
 
TJDave's Avatar
 
Join Date: Nov 2008
Location: Eastern WA State
Posts: 3,542
TJDave is on a distinguished road
I have been told it is a vacume line leak somewhere. Mine does that too, but only when it is really cold outside. Is it cold outside where you live? I end up forgetting about it each year. My Jeep is not a daily driver, and the noise goes away when it warms up. lol

__________________
2004 TJ. 3" Savvy/Currie, 1.25" BL, Locked on 35's.

~PNW4WDA~
TJDave is offline   Quote
Old 11-26-2011, 10:39 AM
Thread Starter
  #3
Newb
 
Join Date: Nov 2011
Posts: 14
Alphacaveman is on a distinguished road
It wasn't THAT cold, low 50's maybe. I'll have to try to do some more research
__________________
2002 Wrangler Sport
Alphacaveman is offline   Quote
 
Old 11-26-2011, 12:04 PM   #4
Jeeper
 
Buz 1's Avatar
 
Join Date: Sep 2011
Location: Beaverdam, Ohio
Posts: 222
Buz 1 is on a distinguished road
stick a 3ft piece of hose to ur ear & put the other end into the engine bay, nearest tb, vac. lines, ect.. it'll lead u to the whistle.
__________________
'97 TJ, 2.5L 5sp


Buz 1 is offline   Quote
Old 11-26-2011, 02:46 PM   #5
Jeeper
 
Jondalar's Avatar
 
Join Date: Sep 2011
Location: Michigan
Posts: 126
Jondalar is on a distinguished road
The hose.
Jondalar is offline   Quote
Old 11-26-2011, 04:33 PM
Thread Starter
  #6
Newb
 
Join Date: Nov 2011
Posts: 14
Alphacaveman is on a distinguished road
How easy of a replacement would that be? I imagine it's a cheap part too
__________________
2002 Wrangler Sport
Alphacaveman is offline   Quote
Old 11-28-2011, 11:30 PM
Thread Starter
  #7
Newb
 
Join Date: Nov 2011
Posts: 14
Alphacaveman is on a distinguished road
So this problem starts when the engine gets warm. The whistling stops when i press on the accelerator.

Just a heads up... I've been scouring through web pages with this problem. People have been saying to tighten the bolts on the intake manifold... That seemed to work. I'll check the bolts and keep this thread updated.
__________________
2002 Wrangler Sport
Alphacaveman is offline   Quote
Old 11-29-2011, 06:12 AM   #8
Jeeper
 
Jondalar's Avatar
 
Join Date: Sep 2011
Location: Michigan
Posts: 126
Jondalar is on a distinguished road
You have to use a piece of hose held up to your ear to pin-point it. Use vacuum cleaner hose if you have to. Be careful of the fan. Let us know too!
Jondalar is offline   Quote
Old 12-03-2011, 07:14 PM   #9
Jeeper
 
NY94YJ's Avatar
 
Join Date: May 2005
Location: Malta NY
Posts: 307
NY94YJ is on a distinguished road
You can NOT do the hose to your ear trick, the issue does not happen at idle,

I have an 03 with same prob. Below 60 Degrees get the 'whistle' when let off the accelerator down to about 1.5K RPM ish...... occasionally I can get it to do it at a stop light by revving it up but it only last a second.....never EVER been able to re-create in the driveway.

My research suggests intake/exhaust gasket, OR cracked exhaust manifold big job for non-mechanic, Big money to have pro do it. However, My 03 has the 2 piece exhaust which supposedly is not as prone to cracking.....so that theory may be out the window.

Hopefully someone chimes in with a "Been There Done That" response and an easy solution...... it's quite an annoying sound.
__________________
'03 TJ Sport on 33's, 2"BB, 1"BL, 1"MML
NY94YJ is offline   Quote
Old 12-03-2011, 10:24 PM
Thread Starter
  #10
Newb
 
Join Date: Nov 2011
Posts: 14
Alphacaveman is on a distinguished road
The whistling starts after about 5min of driving. It keeps whistling even when stopped. The only time it stops is when I put my foot on the accelerator.
__________________
2002 Wrangler Sport
Alphacaveman is offline   Quote
Old 12-07-2011, 01:38 PM   #11
Newb
 
Join Date: Nov 2010
Location: upstate new york
Posts: 14
dmjacobs is on a distinguished road
Have the same problem with my 98 tj only it whistles all the time. I love it. I tell everyone when they ask that it s the super charger. (actually its only a 4 banger ) AND if you have a loose exhaust manifold you will get a ticking alot like you would get from a valve out of adjustment.............
dmjacobs is offline   Quote
Old 12-07-2011, 01:50 PM   #12
Jeeper
 
C.L.'s Avatar
 
Join Date: Mar 2011
Location: North NJ
Posts: 2,549
C.L. is on a distinguished road
Quote:
Originally Posted by NY94YJ View Post
You can NOT do the hose to your ear trick, the issue does not happen at idle
Tape the hose to your head and work the throttle with your free hand...
C.L. is offline   Quote
Old 12-07-2011, 02:30 PM   #14
Jeeper
 
Join Date: Oct 2011
Posts: 388
Robin in VA is on a distinguished road
I have a slight whistling too! I was told it was the air intake/filter....
__________________
Robin in VA is offline   Quote
Old 08-12-2012, 08:40 PM   #15
Jeeper
 
Texas2070's Avatar
 
Join Date: Mar 2012
Location: Starlight, IN
Posts: 184
Texas2070 is on a distinguished road
It's deffently the generator. It only happens when you use the battery a lot when the engine isn't running.

I just installed a new amp in my jeep and I used it while the engine was off a lot while I was working. As soon as I started it up I heard that whistle really bad. Then I found out it was just the generator straining to charge the battery back up. It stops when you rev your engine cause it's charging faster which means less strain on it. Just like you rev your engine when your jumping another vehicle.

Turn your lights on for like 10mins and then start your jeep and it will happen.

The only way I could think of how to fix it is get a new one. Doesn't really bother me though.
Texas2070 is offline   Quote
Old 08-13-2012, 05:16 PM   #16
Jeeper
 
Baby Huey's Avatar
 
Join Date: Feb 2012
Location: Western Washington County Oregon
Posts: 1,412
Baby Huey is on a distinguished road
With the engine at an idle you should be able to find the leaking hose by wiggling them one at a time. Could be cracked hose or just a loose end.
Hoses get hard with age and heat under the hood, so check for hoses that may be cracked, or loose if they just push on.
If it's a intake manifold gasket, try squirting some WD-40 around the gasket, it will suck into the hole and shut the whistle down momentarily ...
Any parts store has vacuum hose.... "BH"

__________________
07-JKU-X /Poison spider Evap.Skid/Master craft grab handles/Or-Fab spare tire-can carrier/ Gibson SS Duals/ Q-tec Floor Liners/Hidden Hitch Receiver/ AntennaX 7inch/ 48" Hi-Lift./ 8"X16"X4"bs Steel smoothie wheels/ 265X75R-16,Kelly Safari TSR tarz.

Viet Nam Veteran 69-70, Troop "D" (AIR) 3/4 Cav. ,25th Inf. Div. CUCHI RVN. UH-1H Crew Chief of the "Pinball Wizard" 68-16224. Call Sign "CENTAUR".
Baby Huey is offline   Quote
Reply

Thread Tools

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
rebuilding your engine?? Get Stroked!!! jeeper95yj YJ General Discussion Forum 6 01-01-2014 04:47 PM
Ticking sound coming from engine bay. Wrangler93 YJ Tech Forum 34 11-08-2011 02:33 PM
Rear pinion seal leak stop?? and weird tick sound from engine compartment saiyan slayr915 TJ General Discussion Forum 1 11-06-2011 03:13 PM
Cherokee Master Clutch Kits - Free Shipping! AOR Vendor Spotlight! Great Deals for Members. 0 04-25-2011 10:35 AM
Strange Clicking sound Coming from rear JimmyJazz TJ Tech Forum 14 01-25-2011 09:37 PM





All times are GMT -5. The time now is 08:43 AM.


User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC
« Back

Enter your email address:

Delivered by FeedBurner