sed this up see below
Engine "Growl"
Thread Starter
|
New User
Joined: Jan 2005
Posts: 9
Likes: 0
Engine "Growl"
Hi All. We just purchase a F-250 4x4 super-duty truck and it has this “low growl” when the RPMs drop after shifting into gear at about 45-55 MPH. It only does this when the engine is warm. Any Ideas?? Any help would be appreciated. The mechanics at the dealership seem to be confused. Thanks
lc
lc
Laughing Gas
Joined: Jun 2003
Posts: 1,166
Likes: 0
From: Chino, California
Is it a V-10 or what? What gear is it in when it does this? What is a low growl? Low in frequency or low in volume?
Mine does this and so does my V-10 van. It goes away as speeds increase. Only does it in top gear (O/D)
Mine does this and so does my V-10 van. It goes away as speeds increase. Only does it in top gear (O/D)
Junior User
Joined: Dec 2004
Posts: 81
Likes: 0
So is this a bad thing? I have the same thing going on in my 2002 F250 when it shifts at 45 - 50 mph. I think it is going into 3 or over drive. I had posted the same question on transmission thread, got no response. So thanks for your help.
Trending Topics
FTE Leadership Emeritus
Joined: Jan 2003
Posts: 161,999
Likes: 75
From: 3rd Rock
Originally Posted by wilkie67
Hi All. We just purchase a F-250 4x4 super-duty truck and it has this “low growl” when the RPMs drop after shifting into gear at about 45-55 MPH. It only does this when the engine is warm. Any Ideas?? Any help would be appreciated. The mechanics at the dealership seem to be confused. Thanks
lc
lc
Enjoy FTE
See you on the boards!
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Thread Starter
|
New User
Joined: Jan 2005
Posts: 9
Likes: 0
It turns out that it's the Torc Converter. It's being replaced. Fortunatly this happened within the first 30 days of ownership and the dealerhip is taking care of it.
lc
lc
Last edited by wilkie67; Jan 4, 2005 at 07:12 AM. Reason: misspelled word
Thread Starter
|
New User
Joined: Jan 2005
Posts: 9
Likes: 0
Engine "Growl" solved!!
Got our truck back last night. The Torque Converter was on its way out The curious thing is, I've only known that to happen from extreme towing or excessive heat on the trans. They replaced it and the growl from the trans hump is gone. If you have a superduty and feel a low frequency hum or growl after you shift into passing gear and your RPM'S drop, then I suggest having it checked. Beware of the common answer of "Trans flushing" It will make it go away only temporarily. Kudo's go out to cokeman for the suggestion. One last thought, below 100,000 miles if you have a slight engine shudder at idle it is not the plugs, but possibly a coil getting ready to give out (it happen to us). Each plug has its own coil mounted on top since eace cylinder has it's own coil, the truck will continue to run, even though it has a shudder. Thanks
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 420
From: Long Island USA
Yup, that sounds like the TC lockup clutch slipping.
Used to happen very often on the 4R70W trannies, but using Mercon V ATF made it go away in both my '96 t-bird and '97 cougar 4.6L's...
For the 4R100 (E40D?), I've never heard of that as a pervasive problem. Also, you can't use Mercon V in the tranny either.
My '01 doesn't do it - I would notice it, and be freaked because they aren't supposed to do that.
The major reason for clutch glazing is fluid temp and load, but I'm sure it could happen at any time... a fluid change is worth the trouble.
Sounds like you'll all need torque converters sooner or later
Used to happen very often on the 4R70W trannies, but using Mercon V ATF made it go away in both my '96 t-bird and '97 cougar 4.6L's...
For the 4R100 (E40D?), I've never heard of that as a pervasive problem. Also, you can't use Mercon V in the tranny either.
My '01 doesn't do it - I would notice it, and be freaked because they aren't supposed to do that.
The major reason for clutch glazing is fluid temp and load, but I'm sure it could happen at any time... a fluid change is worth the trouble.
Sounds like you'll all need torque converters sooner or later