Weird Sound At 60 - 65 Mph

1

1965LONEWOLF

lonewolf
Joined
May 13, 2006
Messages
469
NEED HELP ! Weird Sound At 60 - 65 Mph

Getting This Weird Sound At 60 - 65 Mph , It Doesn't Do It Below That Or Over That , It Doesn't Do It Either If You Let Off Or If You Throw It Into Nuetral , If You Put It In Tow/haul Mode And Go 60 Mph Its Fine , I Can't Figure It Out ? I Checked U Joint - Couldn't Find Anything Wrong By Just Looking , Jacked Up Front Wheels To Check Bearings And They Seem Fine Also - Any Idea's From Anyone
 
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Can you describe the sound?

Does it do it in tow/haul at lower speeds w. similar RPM?

Do you still have the little C weight on the power steering hoses that go to the brake booster?
 
Only Does In In Over Drive - If You Shut The Over Drive Up And Bring It Up To 60-65 The Sound Is Not There , Its Not A Vibration - Its A Sound - I Think Its Some Kind Of Harmonic Balancing Thing ? Maybe Loose Exhaust , Loose Clamp Or Something To That Effect ?
 
1965LONEWOLF said:
Only Does In In Over Drive - If You Shut The Over Drive Up And Bring It Up To 60-65 The Sound Is Not There , Its Not A Vibration - Its A Sound - I Think Its Some Kind Of Harmonic Balancing Thing ? Maybe Loose Exhaust , Loose Clamp Or Something To That Effect ?
Click to expand...


exhaust drone?
 
1965LONEWOLF said:
Getting This Weird Sound At 60 - 65 Mph , It Doesn't Do It Below That Or Over That , It Doesn't Do It Either If You Let Off Or If You Throw It Into Nuetral , If You Put It In Tow/haul Mode And Go 60 Mph Its Fine , I Can't Figure It Out ? I Checked U Joint - Couldn't Find Anything Wrong By Just Looking , Jacked Up Front Wheels To Check Bearings And They Seem Fine Also - Any Idea's From Anyone
Click to expand...
UPDATE: installed two brand new brute force rear u joints and it still does it ! i'm pulling my hair out of my head , if you go 80 mph and then just let off it , it'll come down right pass 60 - 65 and have no noise , only when your on the throttle , i came honme today with cruise control on - set at 65 mph - going up hills and normal ground level you can hear it , BUT when you come down the big hills (cruise control still set at 65 mph ) you can;t hear it , WHAT GIVES ? ANY OTHER IDEA'S OUT THERE ?:what:
 
1965LONEWOLF said:
UPDATE: installed two brand new brute force rear u joints and it still does it ! i'm pulling my hair out of my head , if you go 80 mph and then just let off it , it'll come down right pass 60 - 65 and have no noise , only when your on the throttle , i came honme today with cruise control on - set at 65 mph - going up hills and normal ground level you can hear it , BUT when you come down the big hills (cruise control still set at 65 mph ) you can;t hear it , WHAT GIVES ? ANY OTHER IDEA'S OUT THERE ?:what:
Click to expand...
2 ND UPDATE: jacked the truck up on jack stands and ran it up to 60 mph and it still doing it , atleast that takes the front end , front tires & rims and front drive shaft out of the mix , now the next thing to do is take the rims and tires off and see if it still does it - will report back
 
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