Engine bogs in 5th gear (1 Viewer)

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Joined
Dec 3, 2021
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Location
Okinawa
1994 Prado 3.0 1kz-te engine, manual transmission with 200k km. On Okinawa, max speed is 80kph so 4th gear has been my usual choice. Power is smooth and I cruise at 80kph in 4th at 2,400 RPM. I need to hit 90-100kph before 5th gear is even usable. At 80kph, 5th gear bogs at 2000 RPM. Is this normal?

My buddy has a 1995 Land Cruiser Active Vacation manual trans with the same engine and his 5th gear doesn't bog until under 1100 RPM, so his driving style has him using 5th for most of his commute.

Could this be linked to an ignition/fuel pump issue? I recently posted about my Prado having a rough start but only when the engine is hot.
 

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