Notices
1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Whirring noise under load

Thread Tools
 
Search this Thread
 
Old Nov 9, 2021 | 01:13 PM
  #1  
blacklab1's Avatar
blacklab1
Thread Starter
|
Tuned
15 Year Member
Joined: Aug 2009
Posts: 274
Likes: 4
From: British Columbia
Whirring noise under load

I have a new to me 97F-250 HD. It makes a whirring sound when accelerating or under load.
Every thing functions fine shifts fine.
Something I should worry about or just drive it?
 
Reply
Old Nov 9, 2021 | 01:23 PM
  #2  
sandymane's Avatar
sandymane
Lead Driver
Joined: Oct 2016
Posts: 6,185
Likes: 633
From: Houston/Sugar Land
When mine did that it was the smog pump. You can put a hose or screwdriver on it to listen while someone revs the motor. Caution is paramount.
 
Reply
Old Nov 9, 2021 | 01:26 PM
  #3  
wwhite's Avatar
wwhite
Logistics Pro
10 Year Member
Community Influencer
Loved
Community Favorite
Joined: Aug 2014
Posts: 3,558
Likes: 852
Sound or video clip would be great.
Standard or automatic?

During a test drive, on my old truck, under load it started to whistle, I thought it was just a vacuum leak under the hood.
Turns out it was the exhaust.
Small exhaust leaks, or plugged cats can make more of a "phphphpffffff" noise under load.
A whirring or whirling noise could be something spining.
 
Reply
Old Nov 9, 2021 | 01:57 PM
  #4  
Hit Man X's Avatar
Hit Man X
Lead Driver
20 Year Member
Liked
Loved
Community Favorite
Joined: Sep 2002
Posts: 9,539
Likes: 2,030
From: North Texas
Thumbs up

Could be the power steering pump is low.
 
Reply
Old Nov 9, 2021 | 02:24 PM
  #5  
coder#'s Avatar
coder#
Cross-Country
Joined: Oct 2021
Posts: 60
Likes: 37
Mine was because the previous owner cut the air pump (smog pump) underneath the truck. Mine sounds like a trombone sometimes because of how the lines were cut.
 
Reply
Old Nov 9, 2021 | 06:35 PM
  #6  
blacklab1's Avatar
blacklab1
Thread Starter
|
Tuned
15 Year Member
Joined: Aug 2009
Posts: 274
Likes: 4
From: British Columbia
Thank for all the suggestions. Already tries some. Never thought about the smog pump
 
Reply
Old Aug 7, 2022 | 05:03 PM
  #7  
blacklab1's Avatar
blacklab1
Thread Starter
|
Tuned
15 Year Member
Joined: Aug 2009
Posts: 274
Likes: 4
From: British Columbia
One issue solved thanks to coder#. Got rid of the smog pump used a shorter belt after trying a bunch.
No more noise.
Thanks.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
fordman19762003
6.2L V8
6
Nov 18, 2021 10:36 AM
spacetiger
2017 - 2022 Super Duty
16
Nov 7, 2017 11:26 AM
jermort
6.7L Power Stroke Diesel
104
Jan 6, 2017 10:45 AM
grampus
Bronco II
3
Sep 22, 2003 07:31 PM




All times are GMT -5. The time now is 11:03 PM.

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