Notices
1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck
Sponsored by:
Sponsored by: Moser

Belt squeal

Thread Tools
 
Search this Thread
 
Old Dec 23, 2020 | 05:53 PM
  #1  
FordEdsel75's Avatar
FordEdsel75
Thread Starter
|
Mountain Pass
5 Year Member
Joined: Oct 2020
Posts: 118
Likes: 6
Belt squeal

Why is it that when I take off, especially if I take off fast, I have an annoying belt screech? All of the belts are tight and clean. No pulleys seem to be frozen.
 
Reply
Old Dec 23, 2020 | 06:47 PM
  #2  
resonateur's Avatar
resonateur
Fleet Mechanic
Joined: Jan 2014
Posts: 1,946
Likes: 118
Because, if it is what you suspect, the additional torque causes the belt to slip. There may also be some glazing on the belt. You can spray some water on the belt to verify your diagnosis followed by application of a belt dressing to solve it.
 
Reply
Old Dec 24, 2020 | 08:56 AM
  #3  
FuzzFace2's Avatar
FuzzFace2
FTE Legend
10 Year Member
Photogenic
Community Builder
Liked
Joined: Nov 2015
Posts: 30,906
Likes: 4,122
From: Angier, NC
Club FTE Gold Member
Originally Posted by FordEdsel75
No pulleys seem to be frozen.
But I bet they are baby butt smooth
Try running a round file through the groove to put teeth on it and see what happens.
Dave ----
 
Reply
Old Dec 24, 2020 | 03:09 PM
  #4  
73 hi-boy 428 fe's Avatar
73 hi-boy 428 fe
Laughing Gas
20 Year Member
Photogenic
Photoriffic
Liked
Joined: Jan 2005
Posts: 1,011
Likes: 232
Are the pulleys in line with each other.
 
Reply
Old Dec 24, 2020 | 04:48 PM
  #5  
FordEdsel75's Avatar
FordEdsel75
Thread Starter
|
Mountain Pass
5 Year Member
Joined: Oct 2020
Posts: 118
Likes: 6
They appear to be inline but I will try a straight edge.
 
Reply
Old Dec 25, 2020 | 03:57 AM
  #6  
1TonBasecamp's Avatar
1TonBasecamp
Lead Driver
5 Year Member
Photogenic
Photoriffic
Community Builder
Joined: Jul 2017
Posts: 9,597
Likes: 1,172
From: San Jose, CA
Disconnect the alternator to see if it goes away. If you're running an original style you can simply disconnect the regulator connector and that will basically render the alternator non-working
Another method is to drip some water on the belt to see if the squeal stops. Luckily the alternator and power steering pump belts are usually separated from anything else but the water pump, so it's easier to diagnose with the water method. But this is a bit finicky as tests go anyway. But it's quick!
Even before that, you might want to check your battery voltage with the engine running at idle and at speed. Just in case it's under charging initially, then over-charging as you rev the engine.
Alternators are harder to accelerate due to the mass of the spinning bits inside. The water pump and power steering pump are certainly under load too, but they don't seem to cause the squealing as often as the alternator does. Which is why I'm fixating on the alternator initially.

Is yours older? Maybe the bearings are losing a little bit of their luster. Is yours a different type by any chance? Such as a large-case 1G or even a 3G alternator?
Just checking, since the more powerful alternators seem to have this issue quite often when used with V-belts.

Good luck.

Paul
 
Reply
Old Dec 25, 2020 | 07:44 AM
  #7  
FordEdsel75's Avatar
FordEdsel75
Thread Starter
|
Mountain Pass
5 Year Member
Joined: Oct 2020
Posts: 118
Likes: 6
It is a reman replacement that was put in a few years ago.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
fordinmudd
1987 - 1996 F150 & Larger F-Series Trucks
2
Apr 7, 2011 07:16 PM
seventyseven250
General Automotive Discussion
5
Apr 3, 2009 03:40 PM
Wakeboarder141
1978 - 1996 Big Bronco
26
Jan 9, 2004 08:13 AM




All times are GMT -5. The time now is 12:43 AM.

story-0
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-05-30 18:33:59


VIEW MORE
story-1
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-2
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-3
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-4
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-5
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-6
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-7
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-8
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-9
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE