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[quote=”ukrkoz” post=124781]Are there words more commonly used to describe what “droning” noise is? Can it possibly be humming noise?
Also, what exactly is that drone that you are driving? A truck? A car with leaf springs? They are still around, you know.
I have 2 wild guesses for you.
1. you changed your rear end suspension. Now, your tires run at different path on the tarmac and what you hear, is lugs re grinding themselves.
2. have no idea. I had very similar humming noise on 99 Silverado. Boooooooooooooooooooooooooooooooooooo Very faint and coming from somewhere behind me, sitting in driver seat. Behind and below. It basically sounded like air coming through a narrow passage, except that were no air passages there. No influence on driveability, so I simply quit paying attention to it.,
Royal Purple makes gear oil for rear diff?
Now, should it be one of GM trucks, I wouldn’t be surprised with that humm being “normal”. Those things are made with axe and crowbar.[/quote]Thanks for the reply. My vehicle is in my profile…’67 Camaro. I described the noise and frequency as well as I can, and definitely not a hum. I’m going to start with the u-joints and work my way back. Pinion yoke might be loose. Highly doubt it’s the lugs grinding themselves. Royal Purple makes a great differential gear oil with the posi additive already included.
[quote=”ukrkoz” post=124781]Are there words more commonly used to describe what “droning” noise is? Can it possibly be humming noise?
Also, what exactly is that drone that you are driving? A truck? A car with leaf springs? They are still around, you know.
I have 2 wild guesses for you.
1. you changed your rear end suspension. Now, your tires run at different path on the tarmac and what you hear, is lugs re grinding themselves.
2. have no idea. I had very similar humming noise on 99 Silverado. Boooooooooooooooooooooooooooooooooooo Very faint and coming from somewhere behind me, sitting in driver seat. Behind and below. It basically sounded like air coming through a narrow passage, except that were no air passages there. No influence on driveability, so I simply quit paying attention to it.,
Royal Purple makes gear oil for rear diff?
Now, should it be one of GM trucks, I wouldn’t be surprised with that humm being “normal”. Those things are made with axe and crowbar.[/quote]Thanks for the reply. My vehicle is in my profile…’67 Camaro. I described the noise and frequency as well as I can, and definitely not a hum. I’m going to start with the u-joints and work my way back. Pinion yoke might be loose. Highly doubt it’s the lugs grinding themselves. Royal Purple makes a great differential gear oil with the posi additive already included.
As a follow up, was taking her out today, and didn’t hear the knock again, but noticed the oil fluctuation between 14-16 psi at idle. I can hear/feel the idle fluctuate, even though its only fluctuating 2psi. As I mentioned before, it has done this before, but thought that it might be a part of the total equation like Eric mentioned before. I’m in hopes that i don’t have clearances issues, because I suspect that can spell the end for the crank. I also use a little oil between changes. I’d say about a full quart, but nothing crazy.
As a follow up, was taking her out today, and didn’t hear the knock again, but noticed the oil fluctuation between 14-16 psi at idle. I can hear/feel the idle fluctuate, even though its only fluctuating 2psi. As I mentioned before, it has done this before, but thought that it might be a part of the total equation like Eric mentioned before. I’m in hopes that i don’t have clearances issues, because I suspect that can spell the end for the crank. I also use a little oil between changes. I’d say about a full quart, but nothing crazy.
Thanks for that Eric. Next time I hear it, I’ll pop the hood and start pulling plugs at the dizzy. Again, great video by the way!
Thanks for that Eric. Next time I hear it, I’ll pop the hood and start pulling plugs at the dizzy. Again, great video by the way!
[quote=”JTF” post=113643]You will hear piston slap more when the engine is cold.
Maybe…loose piston wrist pin??? Who rebuilt the engine? I would let them listen and see what they think. …[/quote]
Good plan, but the engine was already in the car when I bought it, and let’s just say that the guy who built it is a bit of a tool, so that’s a no go. If it continues, I can bring it in somewhere and get a second opinion, problem is getting it to do it.
[quote=”JTF” post=113643]You will hear piston slap more when the engine is cold.
Maybe…loose piston wrist pin??? Who rebuilt the engine? I would let them listen and see what they think. …[/quote]
Good plan, but the engine was already in the car when I bought it, and let’s just say that the guy who built it is a bit of a tool, so that’s a no go. If it continues, I can bring it in somewhere and get a second opinion, problem is getting it to do it.
I don’t believe so Eric. Oil pressure starts at around 60 when cold, and settles to 12-14psi at idle. Might slowly go between those two markers, but nothing that I would consider wild fluctuation. Great video library by the way!
I don’t believe so Eric. Oil pressure starts at around 60 when cold, and settles to 12-14psi at idle. Might slowly go between those two markers, but nothing that I would consider wild fluctuation. Great video library by the way!
Sounds like you might have multiple issues. I would inspect the wheels for damage on both the rims and your tires. If you don’t see anything, I’d have them balanced again. Many wheels are not hub centric, and need to be balanced on the proper equipment.
I’d also inspect your driveshaft, as well as your u-joints for the vibration coming thru the seat.
Did you change anything about the vehicle, or all of this just started out of the blue?
Sounds like you might have multiple issues. I would inspect the wheels for damage on both the rims and your tires. If you don’t see anything, I’d have them balanced again. Many wheels are not hub centric, and need to be balanced on the proper equipment.
I’d also inspect your driveshaft, as well as your u-joints for the vibration coming thru the seat.
Did you change anything about the vehicle, or all of this just started out of the blue?
Is the shake thru your steering wheel or through the seat of your pants? If it’s thru the steering wheel, then you could still have a wheel balancing issue or a bent rim. If it’s thru the seat of your pants, it could be a number of things, but I’d look driveline first since you say its only happening after 40mph.