loud noise while acclerating
Thread Starter
|
Junior User
Joined: Jun 2009
Posts: 53
Likes: 0
loud noise while acclerating
i Have a 1986 F-250 6.9 liter turbo diesel, when i am accelerating it is a loud noise like a loud exhaust sound but it is not the exhaust, then it will go away if i let off the gas. Please if you know anything please it would be greatly appreciated.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
IDI turbos don't make a lot of noise when they are working right.
Without knowing what the boost level is, it could be several things you are hearing.
I lean toward boost because you said only while you are giving it throttle.
Boost is the highest when your throttle is on the floor.
Even though the RPM does not drop when you take your foot off the throttle, as soon as you stop feeding it fuel the boost drops to almost zero.
Without knowing what the boost level is, it could be several things you are hearing.
I lean toward boost because you said only while you are giving it throttle.
Boost is the highest when your throttle is on the floor.
Even though the RPM does not drop when you take your foot off the throttle, as soon as you stop feeding it fuel the boost drops to almost zero.
Trending Topics
Thread Starter
|
Junior User
Joined: Jun 2009
Posts: 53
Likes: 0
The Noise is coming from underneath the floor board like near the gas pedal but it doesn't seem like you can hear it from the outside the truck very well to at all
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
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
Is the down pipe still attached to the turbo?
Some of the IDI turbo connections for the downpipe are not that great.
My 093 turbo has a bracket about 1/2 way down the down pipe that holds it in the turbo.
Yes, I have had the bracket come loose and the down pipe fall out of the turbo.
Also there is not much room in there, if the down pipe is hitting the firewall it will make a racket.
Some of the IDI turbo connections for the downpipe are not that great.
My 093 turbo has a bracket about 1/2 way down the down pipe that holds it in the turbo.
Yes, I have had the bracket come loose and the down pipe fall out of the turbo.
Also there is not much room in there, if the down pipe is hitting the firewall it will make a racket.