Screeching sound while idle/driving.
Thread Starter
|
More Turbo
Joined: Mar 2017
Posts: 571
Likes: 12
Screeching sound while idle/driving.
I can't figure this one out. I've developed a screeching sound and sometimes followed by a rattle when the truck is idle (in park) and sometimes when driving. We can rule out a few things here since the same sound happens both driving and idle. Now this doesn't happen every time I drive it. It's random. I was able to record a video of it when it was making the sound. Any ideas?
https://youtu.be/RE-Ooj0pTbk
https://youtu.be/RE-Ooj0pTbk
It's a Van Gogh
Joined: Feb 2010
Posts: 7,812
Likes: 1,335
From: Elk Grove, CA
I'll second that, closely inspect everything related to the serpentine belt. While belt is moving and when not running. Remove tension on belt and wiggle pullys etc.
That AC condenser run off is legendary!
That AC condenser run off is legendary!
Thread Starter
|
More Turbo
Joined: Mar 2017
Posts: 571
Likes: 12
It also makes this sound when the AC is off too. Yea I live in Houston so being hot and humid I pretty much run my AC at full blast anytime I am in the truck haha. I will check the pulleys and look for any movement. If there is movement then it's likely the pulley bearing is bad?
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
My unwritten rule is they should feel and spin smooth and silent. Any dragging, tight spots, or growling is time to replace. If you're in a pinch sometimes you can pop the seal out, pack a little grease in, and reinstall the seal. If it's just a dry bearing, that will usually fix it for quite awhile. Everything in life is better with the proper amount of lubrication.
Tuned
Joined: Jun 2007
Posts: 431
Likes: 66
With the belt removed rotate each pulley by hand while putting pressure on the pulley during rotation. If there’s a bad spot in the pulley you can sometimes feel it when rotating.
The bearings in these pulleys are the same and can be replaced easily without buying new pulley assys. However, buy the first set then you have time to rebuild the original set at your convenience, ready for swapping when you replace your belt.
The bearings in these pulleys are the same and can be replaced easily without buying new pulley assys. However, buy the first set then you have time to rebuild the original set at your convenience, ready for swapping when you replace your belt.
Thread Starter
|
More Turbo
Joined: Mar 2017
Posts: 571
Likes: 12
My unwritten rule is they should feel and spin smooth and silent. Any dragging, tight spots, or growling is time to replace. If you're in a pinch sometimes you can pop the seal out, pack a little grease in, and reinstall the seal. If it's just a dry bearing, that will usually fix it for quite awhile. Everything in life is better with the proper amount of lubrication.
With the belt removed rotate each pulley by hand while putting pressure on the pulley during rotation. If there’s a bad spot in the pulley you can sometimes feel it when rotating.
The bearings in these pulleys are the same and can be replaced easily without buying new pulley assys. However, buy the first set then you have time to rebuild the original set at your convenience, ready for swapping when you replace your belt.
The bearings in these pulleys are the same and can be replaced easily without buying new pulley assys. However, buy the first set then you have time to rebuild the original set at your convenience, ready for swapping when you replace your belt.
Trending Topics
Tuned
Joined: May 2021
Posts: 363
Likes: 121
From: Montana
Use a mechanic's stethoscope, you will know instantly when you touch the offending bearing/pulley (well, don't touch the actual pulley, but a stationary piece of metal near it).
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
Fair odds to tell the truth. It's a somewhat common issue for the flexplate to crack between the bolt holes. I've read threads where guys have had 2 and 3 factory flexplates fail. There are aftermarket options available from factory replacement, to API upgraded, and full billet parts. Torque converters fail also, I at least mine did. You could start by pulling the inspection cover to see if you have play or if it has a wobble at idle.
Thread Starter
|
More Turbo
Joined: Mar 2017
Posts: 571
Likes: 12
Fair odds to tell the truth. It's a somewhat common issue for the flexplate to crack between the bolt holes. I've read threads where guys have had 2 and 3 factory flexplates fail. There are aftermarket options available from factory replacement, to API upgraded, and full billet parts. Torque converters fail also, I at least mine did. You could start by pulling the inspection cover to see if you have play or if it has a wobble at idle.
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
That's a plausible cause for your mystery noise. My daughter's Jeep Liberty TDI had that issue with the cat tagging the frame rail until I massaged the exhaust with a pry bar then glued a split piece of hose over the edge of the frame. Simple and cheap, my favorite kind of repairs.
Thread Starter
|
More Turbo
Joined: Mar 2017
Posts: 571
Likes: 12
This morning I was able to get a better pin point of the sound (I think). I went and listened between the cab and bed from the top and that's where it sounded the loudest. I'm thinking that it could very well be a flex plate issue. I can hear the chatter from inside the cabin too. It also continues to chatter when the trucks is turned off for about half a second. I haven't had a chance to remove the flex plate housing yet, but will sometime this week and I'll report back. Anything I need to look for in there with the housing off?
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
This morning I was able to get a better pin point of the sound (I think). I went and listened between the cab and bed from the top and that's where it sounded the loudest. I'm thinking that it could very well be a flex plate issue. I can hear the chatter from inside the cabin too. It also continues to chatter when the trucks is turned off for about half a second. I haven't had a chance to remove the flex plate housing yet, but will sometime this week and I'll report back. Anything I need to look for in there with the housing off?
Thread Starter
|
More Turbo
Joined: Mar 2017
Posts: 571
Likes: 12