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Automatic Transmission Intermittent Leak

Discussion in '4th Gen 4Runners (2003-2009)' started by Canadianhazy, Jul 29, 2025 at 5:35 AM.

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Jul 29, 2025 at 5:35 AM

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Canadianhazy [OP] New Member

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Hi Guys,
I have a 2005 V8 and have an ongoing transmission leak problem. It doesn’t seem to leak around town but after a highway drive there’s a lot of fluid covering the transmission and to the rear of the transmission. I have already replaced the pan gasket and it improved when I also replaced the Safety Switch seal. It seems to be coming from the right hand side but the oil could be coming from the top side too.
Has anyone experienced this kind of issue before?
Thanks.

Canadianhazy, Jul 29, 2025 at 5:35 AM

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Jul 29, 2025 at 5:40 AM

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JET4 Old Member

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welcome

JET4, Jul 29, 2025 at 5:40 AM

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Jul 29, 2025 at 5:28 PM

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BS67 8404 USMC Doc

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Welcome

BS67, Jul 29, 2025 at 5:28 PM

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Jul 29, 2025 at 5:35 PM

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LOSTR4 New Member

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Just a couple

Transmission cooler line as it comes into the tranny?

LOSTR4, Jul 29, 2025 at 5:35 PM

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TrailSpecial22 likes this.

Jul 29, 2025 at 6:16 PM

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TrailSpecial22 Still here…

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2022 Trail Special Edition Lunar Rock

2” lift Bilstein 6112 w/600 lb coils front, 1.5” lift Eibach T13 coils rear, Bilstein 5100 rear shocks, TRD skidplate, TRD stainless catback w/black TRD side exhaust, TRD shifter handle, Weathertech bug deflector, 20% tint front, LED door bulbs, 285/70/17 Falken WP AT3, Energy Suspension front bumpstops, SSO Slimline Bumper w/ Badland Shackles, Durobumps 4.25” rear

Seal in input shaft of trans to torque converter? Could the trans be overfillled with atf somehow?

TrailSpecial22, Jul 29, 2025 at 6:16 PM

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