Anyone recognize this sound? CVs, exhaust leak, bad injector? I cannot find it for the life of me and I need to solve it so I can sell the vehicle asap. Sounds like it's coming from right in front of the drivers seat but literally NOTHING is loose on my car. As best as i can tell it doesn't react to engine speed or 4WD vs 2WD vs neutral, and is only caused by vehicle speed (40 and above to be exact) but since I can't find anything rattling I'm starting to think it might be mechanical (?)
Oddly enough it started happening after I replaced the steering rack (with OEM) and took out my diff drop. But neither or those should sound like a baseball card in a bicycle... Most helpful info I found was Sean and Timmy talking about a failed trans, but neutral and drive have no change on it
Anyone have any ideas? I'm at my wits end with this, i swear at this point I could map out the entire front end with my eyes closed cause I've poked around so much over the past week. The most likely culprit I found was my fender liner so I put a couple pop rivets in to make it extra tight, but no luck.
Just fishing for ideas here. Tried putting a gopro under the car but it didn't make it any more clear

4Runner Clicking/Ticking Noise 2

Sounds like the alternator pulley bearing. Take the belts off one at a time and run it may be it's one of the pulleys.

That's a damn fine idea. Unfortunately it doesn't happen in park, I can sit there and rev the engine to 6000rpm and won't get a single peep. In fact I won't get a single tick until I hit about 42mph, then it flips on like a switch... Still, might not be a bad idea to take the belts off and give the pulleys a turn to see if they're on their way out - they probably got 150k on them
I'm also curious if maybe some bearing in the front diff is going out. I did the ECGS bushing a while ago but there still has to be carrier bearings somewhere in the mix (right? I think?)

Nothing till 42mph. Wind would be picking up fender liners tight? Fenders snug? If this happened after the steering rack changed, I would go over everything you touched or moved during this project. Like a loose skid plate. Caliper dust shield bumping a rotor.

Possible cracked heat shield on exhaust system or floor shield for exhaust vibrating causing the tick.





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Couldn't be the vac lines around the brake booster, could it?

Funny enough when I was poking around today i looked at the floor shields above the exhaust and was thinking perhaps it's something similar, and there's a heat shield hanging out somewhere I haven't noticed... I remember seeing some other post that was resolved by something like that, some sort of shield or deflector was the culprit
Thanks for the idea, I'll look more carefully tomorrow for one hidden near the firewall or something. Other than that, everything is tip top. Literally the only three things I touched were skid plate, steering rack and front diff - that's it, didn't even take the tires off. And I can yank each of them around with all my weight and they don't budge a single millimeter, they're solid as can be
I was almost positive it was the fender liners until my ride to work yesterday But they are fitting much better now so that's good I guess!

Unfortunately no. The only loose component in my engine bay is the positive lead going to the alt. And I do mean that is the only thing, like seriously nothing else. Long story short I've basically been in this boat for 3 years straight now, and as a result of tracking down noises constantly every last thing under the hood has been remounted properly, tucked away, replaced and otherwise ensured it's not possible to make any noise whatsoever. Which just makes it more all the more frustrating because it doesn't seem to affect anything; not for longer than a couple weeks that is
That's what makes me think it's mechanical, despite all my intuition saying otherwise. I just can't see anything that could possibly rattle around at this point. Either that, or a bearing I can't see... I mean, it's just a car, it's not like they have a ton of them or anything

Speak of the devil; drove to work today and now have a horrible metal squeak coming from the passenger side at 60 and above... that's just ****in great. Which means since January I've developed a thump at idle, a howl at 20, clicking at 40, and chatter at 60.

Bearings don't tick or rattle. They mostly moan, whine and seize.

It's possible the exhaust manifold is cracked and opening up when it's warm on the drivers side and you hearing valves hitting. Granted when the exhaust opens up it it gets louder too. I am out of ideas.

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Exhaust leak was also on my mind. The sound is right, just behaves pretty erratically. I appreciate the input nonetheless
That said, as I was driving today I was taking a turn, heard a decently loud "PA-TING" sound and the clicking stopped for the rest of the drive.... which is pretty relieving, but also kinda concerning We'll see if it stays that way

Stone in the tire or screw/nail?


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That's very possible. The little stone love to tick.. the loud noise might have been it cing out..

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Nevermind, spoke too soon, wasn't a rock

Oh crapsky.. I was hoping you were all patched up..

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Could this be the clicking people talk about with the charcoal box? I've always heard people mentioning it before but I can't find anyone that's posted a video of it. Mostly because whenever someone does post about it they seem to drop the subject once they're reassured it's normal. I was under the impression that it was a singular, loud click from the purge valve (which I also have and ironically also developed out of nowhere, but that's a different story), but again it's hard to find anyone actually diving into any detail about it
Idk, just grasping at straws here. Still haven't figured it out, but it is seemingly getting a little less frequent
Thankfully I found the squeak that arose last week too, was an ABS line rubbing in the retaining clip. One step at a time

When I first read ur post, my initial thoughts were that it could be one of the VSVs on the charcoal canister. My sons 1999 had a similar fast clicking noise and it did turn out to be the VSV on charcoal canister It was the one closest to the firewall. Good luck

MikeM

Well, guess I'll order one then. What do I got to loose eh?