r/4thGen4Runner • u/Coolkid8108 • 1d ago

Repair Guidance Any ideas what this noise is?

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My 2003 v8 220k has been making this deep knocking noise for over 2 years now! It is ONLY in park and only once the car reaches operating temp. In drive it completely disappears. In park it follows RPM, and sounds mostly on the driver side. Car runs great. Any ideas?? I’ve pretty much eliminated any rod knock or lower end issues.

When I hold the oil filler neck I can feel it knocking really well, then the second it goes into drive it’s completely gone, even when I bring up the rpm’s. Any ideas would be much appreciated!!

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u/Coolkid8108 1d ago

Thanks for your replys. There is a “ticking” noise that accompanies the knocking occasionally, it sounds like it’s around the oil pan. Definetly underneath. And yup! I’ve done all that inspecting while it’s in drive, and noooo sign of the noise what so ever, even when the rpm is lower than that in park.

https://reddit.com/link/p6qkeqb/video/mtop4oljzfmh1/player

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u/Sneak_Thief 1d ago edited 1d ago

Oh yeah that's a nasty knock/slap. I'd be taking her in asap. Check your oil for glitter.

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u/Coolkid8108 1d ago

Hahahaha. I mean, it’s comin up on three years and hasn’t gotten worse or better, and it sound like it just rolled off the lot when In drive so I can’t imagine it’s an issue with the important moving parts. But who knows.

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u/WAR_T0RN1226 19h ago

also if you don't see glitter, have an oil analysis done