Merry Christmas all...
I've had my 2007 Tacoma for almost a year now and have never heard this noise until recently. The weather here dipped to a frosty minus 25* C so I don't know if that is contributing to the noise but like I said it's a new occurance. Basically at around the 40 mph mark the noise pops up and sounds like a low pitched throaty drone noise, which if I maintain that speed it doesn't go away. Once I take my foot off the gas pedal it goes away, back on the gas it re-appears. At higher speeds it isn't as noticeable.
I think I've narrowed down the noise to passenger side, either under the hood or chassis
Could be the exhaust, I don't know, any help is appreciated...
Reply 1 : Drone noise
yeah its probably your exhaust... how long have you had it (aftermarket) installed? what muffler do you have?
i have a cherry bomb extreme and i'll tell you that around 30-40mph there is a pretty loud drone... the only thing i could think of is since its so cold there, the metal in the muffler has contracted so much that its creating the drone.. just my .02
Reply 2 : Drone noise
Actually it's a factory exhaust.
Just took it out for a spin and the noise is at it's worst right around the 40 mph mark
Reply 3 : Drone noise
hmmm man i dont know then. could be a leak maybe?
Reply 4 : Drone noise
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Originally Posted by northside taco 
Merry Christmas all...
I've had my 2007 Tacoma for almost a year now and have never heard this noise until recently. The weather here dipped to a frosty minus 25* C so I don't know if that is contributing to the noise but like I said it's a new occurance. Basically at around the 40 mph mark the noise pops up and sounds like a low pitched throaty drone noise, which if I maintain that speed it doesn't go away. Once I take my foot off the gas pedal it goes away, back on the gas it re-appears. At higher speeds it isn't as noticeable. I think I've narrowed down the noise to passenger side, either under the hood or chassis Could be the exhaust, I don't know, any help is appreciated... |
It sounds like the noise appears at a certain speed. Is it Dependant on what gear you're in? Manual or automatic tranny? RPM Dependant or just speed Dependant? If it appears worst at 40 mph, what happens if you get up to 45mph and throw the truck in neutral and coast down below 40mph? Is it still evident when the truck is in neutral? What happens if you rev the engine at 40 mph while in neutral? Does the sound get better/worst? Is the noise in the drive train or chassis of the truck?
Sounds like you need to gather more info...
Reply 5 : Drone noise
To answer a few of your questions.
My Taco is an automatic, noise seems to be speed dependent. It appears at it's worst around 40 mph. Replicating the sound at 40 is no problem, I just have to push the gas the sound appears, off the gas and the sound goes away. Cruise at 50 and beyond, or 30 and lower it's not noticeable.
If I rev up the engine idle I can''t replicate the noise.
No vibrations at 40 mph altough I do get them at lower speeds of 15-20 mph. Sound is more low toned rumble strip sound.
I'm going to attempt throwing the truck into nuetral at 40 to see what happens.
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Originally Posted by ForTech
Its near impossible to diagnose noises on the internet, but I'll take a stab at it. Does the noise sound like a quieter version of running on a rumble strip? Vibrating plastic? Metallic sound?
It sounds like the noise appears at a certain speed. Is it Dependant on what gear you're in? Manual or automatic tranny? RPM Dependant or just speed Dependant? If it appears worst at 40 mph, what happens if you get up to 45mph and throw the truck in neutral and coast down below 40mph? Is it still evident when the truck is in neutral? What happens if you rev the engine at 40 mph while in neutral? Does the sound get better/worst? Is the noise in the drive train or chassis of the truck? Sounds like you need to gather more info... |
Reply 6 : Drone noise
I also have a "drone noise".
I have a 2007, v6, automatic, access cab with Dunlap tires. I get the noise around 40. Letting go of the gas the noise is still there but goes away as the truck slows down. Revving the engine does not produce the noise nor does shifting the neutral.
I think the noise is associated with either the tires, exhaust or air intake (which are all stock). The weather in Maine has been to cold, snowy and by the time I get home from work to dark to search the problem further.
The noise is a low hum (somethink like you get running agressive snow tires). This is why I think it maybe a tire issue.
Reply 7 : Drone noise
i'll be honest with you... i think it's a wheel bearing. i have an 05 and it started to make that noise, only on the driver side though. turned out to be the driver-side wheel bearing. replaced the bearing and had no noise. idk if my noise is the same as yours, but mine was speed dependent too.
just my 2 cents. i could be wrong
Reply 8 : Drone noise
How many miles do you have on the truck?
Reply 9 : Drone noise
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Originally Posted by griffin407c
i'll be honest with you... i think it's a wheel bearing. i have an 05 and it started to make that noise, only on the driver side though. turned out to be the driver-side wheel bearing. replaced the bearing and had no noise. idk if my noise is the same as yours, but mine was speed dependent too.
just my 2 cents. i could be wrong |
Reply 10 : Drone noise
I have around 22,000 miles on mine.
It's still under warranty which is a good thing, might have the techs at Toyota have a look at it which might be a bad thing, lol.
Gonna wait until the weather gets out of the -20 C range and into something near the freezing mark first to see if it disappears.
Reply 11 : Drone noise
As far as the wheel bearing theory goes, every thing appears stable when in motion. I'm leaning towards exhaust system noise but the air intake theory might have some substance. Any idea what I should look at from that angle? I've already checked the air filter and it looks good.
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Originally Posted by ForTech
Usually with a wheel bearing the pitch of the noise will change when you swerve either left or right on a gradual turn. I've replaced my fair share on two Mazdas and a GMC Sonoma before switching to Toyota.
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Reply 12 : Drone noise
I have around 25000 miles on my truck with the air temperature running between 0 to 50 degrees (50 degrees here last Sunday). I start to notice the noise most around 35 mph loudest at 40 and still auditable around 60.
I have a AFE Pro-Dry S air filter coming (this week I hope) and hope to swap it out this coming weekend (if it arrives). Should prove or dis-prove any intake issues.
Reply 13 : Drone noise
Check this out. This afternoon I played around with driving in various gears ( I have an auto tranny). I shifted into 4th gear rather than "D" and the noise disappeared, back to drive and the noise returned.
Go figure
Reply 14 : Drone noise
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Originally Posted by ForTech
Usually with a wheel bearing the pitch of the noise will change when you swerve either left or right on a gradual turn. I've replaced my fair share on two Mazdas and a GMC Sonoma before switching to Toyota.
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