whining under hood
Thread Starter
|
Freshman User
Joined: Feb 2004
Posts: 32
Likes: 0
whining under hood
just started tonight....(02 f350 sd).started up truck and heard a whining from under the hood. Not a belt whining but sometind else. Have no idea what it could be. I checked all the fluids (tranny, break, power steering) all full and clean. I washed the truck down the other day and sprayed the sand and salt out from under the hood. I plow with this truck, but have it serviced after every storm. Any ideas??????? It seems to be at the loudest at start up, and diminishes as I accelerate.....
Thread Starter
|
Freshman User
Joined: Feb 2004
Posts: 32
Likes: 0
its the 5.4,reg cab.
i went out and sprayed some areas with wd40 but it didnt quiet anything. seems to be the loudest around the alternator. just started tonight?
if it was the alternator, is this the warning before it craps out?
i went out and sprayed some areas with wd40 but it didnt quiet anything. seems to be the loudest around the alternator. just started tonight?
if it was the alternator, is this the warning before it craps out?
Last edited by rmartin11; Mar 16, 2005 at 06:03 PM.
Elder User
Joined: Apr 2004
Posts: 797
Likes: 0
From: Wickenburg, AZ
As a hip shot, I'd say an idler pulley or alternator. r0n1n might have something with the PCV boot as well. It wouldn't be the first time I saw that happen.
Trending Topics
Lead Driver
Joined: May 2003
Posts: 9,303
Likes: 48
From: Lyndonville, Vermont
Cowboy may have it. Take the belt off and spin the idler and the alt they should make no noise I'm betting on the idler bearing, I had to replace mine last year. Just the bearing. Also for the alt you can get the bearings replaced if thats what it is.
Dick
Dick
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
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
Posting Guru
Joined: Nov 2004
Posts: 1,708
Likes: 3
From: North Dakota
You guys are all crazy, I'm pretty sure you just forgot about that Super Charger that you installed last week, lol. Just take the drive belt off of your super charger pully and the noise will stop, probloem solved. Alright more seriously - I agree with the rest check those accesorie components, ie alternator, power steering pump ect.... As far as doing a check use a poor mans stethascope (just a peice of hose) start the truck and route the hose around untill you find the area that it is coming from. If its the Idler pully or the alternator just pop off your belt and give them a spin, you'll probably be able to feel/hear the roughness in the bearings. Good Luck
Thread
Thread Starter
Forum
Replies
Last Post
5.4L to Freedom
1999 - 2016 Super Duty
4
Dec 16, 2010 05:51 PM