High pitch rattle at interstate speeds

03bighossf250

Da Man
Joined
Jul 19, 2006
Messages
88
Reaction score
0
Location
Virginia Beach, Va
So I just bought an 03 Excursion 6.0 and noticed a high pitch rattle while driving down the interstate. If your giving it gas its good no rattle if you let out of the gas or are at a steady speed it rattles like crazy. I only notice it from about 40mph and up at around 68 it is ridicous its driving me crazy please help I just want to fix it or get rid of it.
 

03bighossf250

Da Man
Joined
Jul 19, 2006
Messages
88
Reaction score
0
Location
Virginia Beach, Va
Please Help.....

I checked the drive shafts replaced the u joints and pulled out the front and the noise is still there. It sounds like an exhaust rattle. But I've followed it all the way from turbo back and its not touching anything. I read some where that it might be the VGT being stuck open. But i'm not sure. It has head studs and EGR delete already done. I'm just confused and dont really have time to keep testing ideas. I spent 4 days under the truck so far and i'm about ready to sell this thing.
 

BIG JOE

Full Access Member
Joined
Apr 6, 2005
Messages
5,423
Reaction score
55
Location
CenCal
I'm still think'n Exhaust system.... becuase it goes away when you give it some throttle (not gas;)). Torque related.

Check the downpipe.. where it passes by that pinch-weld on the firewall.. and also the pipe itself.. where it passes under/near the heat shields. Look for shiney spots.

Let us know ?

Joe
 

rammertide07

Full Access Member
Joined
Jan 19, 2010
Messages
1,206
Reaction score
0
Location
Rogersvilles, AL
My exhaust is touching a bolt on the back side of the engine....about 6" down from the turbo. I was thinking exhaust too untill I thought about it being torque related.

All the wheels tight???
 

fordfury

redneck punk
Joined
Aug 13, 2008
Messages
75
Reaction score
0
Location
idaho
i know on the rear brakes the little guards on the calipers will rattle and be pretty annoying
 

fordfury

redneck punk
Joined
Aug 13, 2008
Messages
75
Reaction score
0
Location
idaho
does it do the sound at a stand still,in park. when you rev it up than let off.
 

Members online

Forum statistics

Threads
30,545
Messages
266,136
Members
14,673
Latest member
Doms350
Top