Noise
spun bearing
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Fleet Owner
Joined: Jan 2004
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From: Brentwood,CA
spun bearing
would a spun bearing sound increse under load i noticed i have a metal on metal chirping sound towards the rear of the engine and when you acclerate it makes this horrible metal on metal sound but in idle it sounds fine and up to 5,000 it sounds fine with no load but with load it does not.
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Joined: Nov 2002
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From: USA
Most all bearings I've heard going out are more of a knock and they do get louder/faster by increasing RPMS. Not sure I've ever heard a cam bearing go bad, maybe they could sound like that?
You have a manual tranny? Any chance it could be a throw-out bearing? Pilot Bearing?
You have a manual tranny? Any chance it could be a throw-out bearing? Pilot Bearing?
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From: Alaska
if its a manual tranny if you press the clutch in does it go away if so then you have bad thrust bearing also i would agree that i spun bearing would more likely make a knock instead of a chirp but if it is a chrip then it is possible it could be a main bearing but i doubt it.
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Fleet Owner
Joined: Jan 2004
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From: Brentwood,CA
nope its a auto c-6 this noise started after the engine replacement the tranny was never removed but yet it shifts smooth and has all gears.but i noticed today when i had the truck on the rack that when i park the drive shaft was locked which is how it should be but if i spun the tires by hand they rotated i though being in park would prevent them from moving what gives it is a ford 9 inch but when its on the ground and in park it won't move a inch is this normal.
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It is difficult to tell where a sound is coming from sometimes.
A bad or loose flex plate sounds possible but it could be as simple as a dry/bad U-joint.
I doubt it is a spun bearing if the motor is quiet without a load on it.
Good Luck.
Ken
A bad or loose flex plate sounds possible but it could be as simple as a dry/bad U-joint.
I doubt it is a spun bearing if the motor is quiet without a load on it.
Good Luck.
Ken
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From: Colville, Washington
ford-it is normal for the tires to turn in park when they are off the ground. The park function locks the tranny, not the rear axle. If you watch the other tire you will see that it turns the opposite direction due to the differential action.
You said it only makes this noise under load, is that while accelerating or when in gear at a standstill? I agree with John, it would not run long at high RPM with a spun bearing! If the noise only occurs while accelerating or climbing a hill, check your starter. I know that sounds strange, but a worn starter drive can allow the gear to slide rearward and rub on the flywheel. It will only happen while climbing a hill or accelerating. Just a thot.
You said it only makes this noise under load, is that while accelerating or when in gear at a standstill? I agree with John, it would not run long at high RPM with a spun bearing! If the noise only occurs while accelerating or climbing a hill, check your starter. I know that sounds strange, but a worn starter drive can allow the gear to slide rearward and rub on the flywheel. It will only happen while climbing a hill or accelerating. Just a thot.
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Hi Gashog, I had a car with similar symptoms to yours. I thought it might have been a spun bearing, and feared the worst. It ended up being a collapsed lifter. The lifter had become clogged with some RTV flouting around, and was unable to pump up at higher RPMs. The symptoms were almost identical. I hope this helps. Maybe it's Gods way of talking you ionto a cam swap. -Kevin
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That sounds like the teeth on the flexplate are hitting something, like the starter gear.
When you put a load on it, the crank moves in and out, not sure which way, but sounds like it's related to crank end-play. Could be, you have too much end play, or just a starter gear that's not retracting.
I was just going to say something smart about trying to make the noise go away with the clutch, but you have an auto... darn it
This has been gone through before, but is an auto starter a different depth than a manual? Is it possible he got the wrong one?
When you put a load on it, the crank moves in and out, not sure which way, but sounds like it's related to crank end-play. Could be, you have too much end play, or just a starter gear that's not retracting.
I was just going to say something smart about trying to make the noise go away with the clutch, but you have an auto... darn it
This has been gone through before, but is an auto starter a different depth than a manual? Is it possible he got the wrong one?
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From: Alaska
is an auto starter a different depth than a manual?
the answer is no they are the exact same part the depth should be the same but that all depends on the amount of juice the starter gets to throw in the drive. also i dont know if this has been said but i was thinkin about it last night and thought that the flywheel bolts could be too long. is this a new rebuilt engine or has it been in the truck for awhile and just started it?
the answer is no they are the exact same part the depth should be the same but that all depends on the amount of juice the starter gets to throw in the drive. also i dont know if this has been said but i was thinkin about it last night and thought that the flywheel bolts could be too long. is this a new rebuilt engine or has it been in the truck for awhile and just started it?
