Strange noise nobody seems to recognize
#1
10-17-2015, 03:28 PM
Strange noise nobody seems to recognize
Hello fellow FTE members, I'm going to first appologize for the length of my thread but it will give information and facts about my dilemma. I'm seeking help with a noise issue that I can't find or figure out. I have a 2010 F-150 FX4 SC 4x4 5.4l w/ automatic that has 52,000 miles on the clock give or take, unmodified with the only exception of a remote oil filter relocation unit.
I bought the truck with 48,000 on it and did not have this noise, i've had it back to the dealer and their best mechanic went for a ride with me and the noise was duplicated and the mechanic had the deer in the headlight look on his face and said he'd never heard anything like that before. I've searched the net for anything similar like this but have not found anything. The noise rears it's ugly head after the truck is warmed up and it first started around 55mph and went away at 65mph , then re-emerged at 75mph and left again at 82mph.
Tried the usual test things while noise was present first loading and unloading the steering left and right, (wheel bearing) no change. Next I applied the brakes (caliper rubbing) no change. Then I tried shifting to neutral (transmission or carrier bearing) no change. I also tried shifting into and out of 4x4 (transfer case) no change. If I speed up above those speeds or slow down below them, the noise disappears. Recently... the noise seems to be more consistent and when it's present at 80mph and you let off the throttle, the noise is present all the way down to 55mph then magically goes away. The noise to me sounds like a vacuum leak in a rubber hose or a dry spinning shaft in a bushing, sort of a low hum that sounds like it's coming anywhere from the motor to the transmission area. Most of the noise issues I've read about on here and what I've encountered over my many years of working on Detroit's finest seem to deal with hard parts. I'm somewhat confident I've covered most of my bases but I'm reaching out to my FTE Bretheran to possibly help in my time of need.
I bought the truck with 48,000 on it and did not have this noise, i've had it back to the dealer and their best mechanic went for a ride with me and the noise was duplicated and the mechanic had the deer in the headlight look on his face and said he'd never heard anything like that before. I've searched the net for anything similar like this but have not found anything. The noise rears it's ugly head after the truck is warmed up and it first started around 55mph and went away at 65mph , then re-emerged at 75mph and left again at 82mph.
Tried the usual test things while noise was present first loading and unloading the steering left and right, (wheel bearing) no change. Next I applied the brakes (caliper rubbing) no change. Then I tried shifting to neutral (transmission or carrier bearing) no change. I also tried shifting into and out of 4x4 (transfer case) no change. If I speed up above those speeds or slow down below them, the noise disappears. Recently... the noise seems to be more consistent and when it's present at 80mph and you let off the throttle, the noise is present all the way down to 55mph then magically goes away. The noise to me sounds like a vacuum leak in a rubber hose or a dry spinning shaft in a bushing, sort of a low hum that sounds like it's coming anywhere from the motor to the transmission area. Most of the noise issues I've read about on here and what I've encountered over my many years of working on Detroit's finest seem to deal with hard parts. I'm somewhat confident I've covered most of my bases but I'm reaching out to my FTE Bretheran to possibly help in my time of need.
#2
10-19-2015, 11:49 AM
Hello fellow FTE members, I'm going to first appologize for the length of my thread but it will give information and facts about my dilemma. I'm seeking help with a noise issue that I can't find or figure out. I have a 2010 F-150 FX4 SC 4x4 5.4l w/ automatic that has 52,000 miles on the clock give or take, unmodified with the only exception of a remote oil filter relocation unit.
I bought the truck with 48,000 on it and did not have this noise, i've had it back to the dealer and their best mechanic went for a ride with me and the noise was duplicated and the mechanic had the deer in the headlight look on his face and said he'd never heard anything like that before...
I bought the truck with 48,000 on it and did not have this noise, i've had it back to the dealer and their best mechanic went for a ride with me and the noise was duplicated and the mechanic had the deer in the headlight look on his face and said he'd never heard anything like that before...
Crystal
#3
10-21-2015, 12:21 AM
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