Loud Howling noise - Ranger-Forums - The Ultimate Ford Ranger Resource


Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 06-11-2008
Blessed98's Avatar
Member
Thread Starter
 
Join Date: Dec 2006
Location: Pa
Posts: 58
Loud Howling noise

I've been getting a very loud howling/whining noise from my 98 ranger for a few years now and I'd at least like to know what it is for future reference. It only happens in hot weather, never in the fall or winter. If the truck is cold it will not make the noise. If I drive it for a while on the highway, stop somewhere and park it will howl loudly when I start it until I drive for a while which leads me to believe the transmission is overheating. I suspect it is either the pump or the torque converter because the sound disappears over 1500 rpms. It's not coming from the intake, the sound seems to emanate from the rear of the engine compartment but it's so loud I can't pinpoint it. The fluid has not been changed in the trans for 90,000 miles so there's a good chance that has something to do with it. I just want to know if anyone else has a similar experience. I'm not in any financial shape to repair the transmission but I'd at least like to know what it is. Thanks.
Reply With Quote
  #2  
Old 06-11-2008
Seahawk's Avatar
Member
 
Join Date: Mar 2008
Location: Sheboygan County, WI
Posts: 376
to me it really sounds like your tranny. hopefully for your case it isn't. your sure it's w/ the drivetrain? cause we had a howling noise with our windstar and had the tranny replaced for $1500 and all we needed was new tires.
Reply With Quote
  #3  
Old 06-11-2008
Blessed98's Avatar
Member
Thread Starter
 
Join Date: Dec 2006
Location: Pa
Posts: 58
Based on the symptoms I'm having I'd say that it is something in the transmission. There's no engine noise, I have brand new tires and it's done it over about 4-5 different sets of tires. If it didn't disappear with rpm's and only do this when it's hot out then I'd say it was something else but it's been a bugger to figure out over the last 4 years.
Reply With Quote
  #4  
Old 06-11-2008
Level I Supporter
 
Join Date: Aug 2006
Location: Durham, NC
Posts: 3,657
The IAC valve has been known to make a howling noise. And since your running a K&N air filter, there is a good chance your IAC valve and throttle body are gummed up from the oil and dirt the K&N passes.....The first thing to try is clean the IAC valve, and see what affect that has on the howling noise.
Reply With Quote
  #5  
Old 06-11-2008
Blessed98's Avatar
Member
Thread Starter
 
Join Date: Dec 2006
Location: Pa
Posts: 58
Where exactly is the IAC valve? I cleaned my MAF sensor once and some other little sensor in the intake tube but I'm not even sure what that was. I've heard someone mention the IAC once before to someone with a similar problem, makes me wonder.
Reply With Quote
  #6  
Old 06-11-2008
Blessed98's Avatar
Member
Thread Starter
 
Join Date: Dec 2006
Location: Pa
Posts: 58
Brb, going to go out and look at it... I am intrigued to say the least.
Reply With Quote
  #7  
Old 06-11-2008
Level I Supporter
 
Join Date: Aug 2006
Location: Durham, NC
Posts: 3,657
The IAC valve is located on the upper intake just behind the throttle body.
This is what it looks like:




The other sensor in the intake tube is the IAT (Incoming Air Temperature) sensor.......
Reply With Quote
  #8  
Old 06-11-2008
FullThrottle02's Avatar
Member
iTrader: (3)
 
Join Date: Apr 2008
Location: McHenry,IL
Posts: 586
Did you consider the clutch fan engaging to cool the engine? It's hard to diagnose without hearing it but I would look at the fan.
Reply With Quote
  #9  
Old 06-11-2008
Blessed98's Avatar
Member
Thread Starter
 
Join Date: Dec 2006
Location: Pa
Posts: 58
Thanks for the pic. I went out, pulled off the IAC and throttle body, had some electric motor cleaner and cleaned out the IAC good. The spring inside looked very gummed up so maybe it was sticking? I also got some carb and choke cleaner and scrubbed the whole inside of the throttle body. The back side of the butterfly had an easy 1mm thick layer of varnish on it as did the body itself. When I put it back together I didn't hear a thing, went and drove it for a few minutes and completely silent. I think it's too early to tell because the temp outside cooled down but I'll be driving 20 miles to Reading tomorrow so that will tell the tale.
Reply With Quote
  #10  
Old 06-11-2008
Blessed98's Avatar
Member
Thread Starter
 
Join Date: Dec 2006
Location: Pa
Posts: 58
Just a little update. I went out around 9:30 to pick up my sister, started the truck and again, a loud howling noise. Just out of curiosity I popped the hood and tried to locate the source. I read on the explorer forums about a guy who had a similar problem and he pulled the black cap off of his IAC valve and it stopped. I though "what the heck" and yanked it off. Sure enough, the noise stopped altogether. As an experiment, I placed my finger over the hole to block it off and the noise came back obnoxiously loud. I think now, that the IAC valve is bad and sticks somehow, pulling the little black cap off cured the problem until I can get a new one. Takeda was spot on with what was causing the sound, thanks for the heads-up.
Reply With Quote
  #11  
Old 06-11-2008
FireRanger's Avatar  
Join Date: May 2004
Location: CT
Posts: 0
Yea, I knew what the problem was just by the title of the thread. Its so common, many people refer to it as the Ford 4.0 Moose Call.
Reply With Quote
  #12  
Old 06-12-2008
Level I Supporter
 
Join Date: Aug 2006
Location: Durham, NC
Posts: 3,657
Quote:
Originally Posted by Blessed98 View Post
Just a little update. I went out around 9:30 to pick up my sister, started the truck and again, a loud howling noise. Just out of curiosity I popped the hood and tried to locate the source. I read on the explorer forums about a guy who had a similar problem and he pulled the black cap off of his IAC valve and it stopped. I though "what the heck" and yanked it off. Sure enough, the noise stopped altogether. As an experiment, I placed my finger over the hole to block it off and the noise came back obnoxiously loud. I think now, that the IAC valve is bad and sticks somehow, pulling the little black cap off cured the problem until I can get a new one. Takeda was spot on with what was causing the sound, thanks for the heads-up.
Do your truck a big favor, and replace that K&N with the OEM paper filter!
Dirt and oil are the only things that the K&N passes more than the OEM paper filter, so there is no advantage to the K&N. With the OEM paper filter, you won't have to clean the MAF, or worry about a gumed up IAC valve again. My 1999 3.0L has >150K miles, the MAF sensor, throttle body, and IAC valve are like new, and they have never been cleaned. I've only used Motorcraft, or Purolator air filters, changed once a year.

Last edited by Takeda; 06-12-2008 at 06:06 AM.
Reply With Quote
  #13  
Old 08-08-2010
Member
 
Join Date: Aug 2010
Location: Rowlett, Texas
Posts: 1
Quote:
Originally Posted by Blessed98 View Post
Just a little update. I went out around 9:30 to pick up my sister, started the truck and again, a loud howling noise. Just out of curiosity I popped the hood and tried to locate the source. I read on the explorer forums about a guy who had a similar problem and he pulled the black cap off of his IAC valve and it stopped. I though "what the heck" and yanked it off. Sure enough, the noise stopped altogether. As an experiment, I placed my finger over the hole to block it off and the noise came back obnoxiously loud. I think now, that the IAC valve is bad and sticks somehow, pulling the little black cap off cured the problem until I can get a new one. Takeda was spot on with what was causing the sound, thanks for the heads-up.
did this IAC valve end up fixing the problem? I've got the same exaclty and replaced the fan clutch but no go. I't sound like the fan's having problems breathing when the clutch kicks in but is better when it's cool out. Thanks for the input
Reply With Quote
  #14  
Old 05-06-2017
Member
 
Join Date: May 2017
Location: Mechanicsville VA
Posts: 2
Changed fan clutch now I have howling noise. Any ideas?
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
howling from intake??? randyl General Ford Ranger Discussion 1 05-15-2010 10:45 AM
1998 ranger. howling from inside engine ason4005 General Ford Ranger Discussion 4 03-23-2010 05:06 PM
weird howling sound 00xlt4x4 General Technical & Electrical 1 11-29-2007 08:37 PM
front diff howling on 01 in 4x4? JD Drivetrain Tech 6 06-16-2007 12:08 PM
I want my truck to be loud but not too loud Jardo87 Ranger-Forums Office 35 07-03-2005 05:46 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -6. The time now is 12:57 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.