if my truck ran i'd check and see 
Is this noise normal?
Thread Starter
|
Senior User
Joined: Jul 2005
Posts: 226
Likes: 0
From: PA
Is this noise normal?
When I shut down the engine on our 95 F-150 351w, and the hood is up, I usually hear a soft buzz sound that fades away after a few seconds. I hear it coming from the ignitor area.
Is this normal?
Dave
Is this normal?
Dave
New User
Joined: Apr 2006
Posts: 12
Likes: 0
From: Durant, OK
I've heard it in several vehicles, not just my pickup. I always thought it was just the fuel pump relieving a little bit a pressure, but thats just an idea. I really don't know for sure.
Trending Topics
Fleet Owner
Joined: Aug 2005
Posts: 23,666
Likes: 301
From: Easton,Ks
Originally Posted by dgeesaman
When I shut down the engine on our 95 F-150 351w, and the hood is up, I usually hear a soft buzz sound that fades away after a few seconds. I hear it coming from the ignitor area.
Is this normal?
Dave
Is this normal?
Dave
All so the check valves in the brake booster and the vacuum lines going to the vacuum reservoir will make a noise if they are bad.
You have less vacuum on the fuel pressure regulator so it will try to hold more pressure back, not bleed off so this should not make any noise unless it has a hole in its diaphragm or is bad.
You may also hear pressure bleeding pass the rings right after the engine is shut off.
Last edited by subford; Feb 17, 2007 at 08:27 AM.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Postmaster
Joined: Oct 2006
Posts: 4,816
Likes: 1
From: Davis & Newcastle, CA
I also have this noise, a very faint whirring/wheezing noise, almost sounds like someone blowing spit bubbles through a straw (sorry for the vulgar description, heh). It seems to be come from near the brake booster. Do I have bad vacuum lines?
-Chris
-Chris
Thread Starter
|
Senior User
Joined: Jul 2005
Posts: 226
Likes: 0
From: PA
Originally Posted by subford
I do not know what an "ignitor area" is but you will have a sound coming from the backside of the engine compartment
Dave