1991 Lexus LS 400 Service and Repair Manual

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This manual is keyed to the 1991 Lexus LS 400 alone — one year, one engine, one trim — so the clearances, torque values and service intervals you work to are the ones Lexus specified for the 4.0L V8 (1UZ-FE) in your car, not figures carried over from an adjacent model year.

Engines

  • 4.0L V8 GAS Naturally Aspirated

Trims

  • Base

Known issues on the 1991 LS 400. Owners have filed 22 complaints for the year. The diagnostic and repair procedures behind the systems those owners write about are here, at the manufacturer's specification rather than a generic workaround.

From a scheduled service on the 1UZ-FE V8 to tracing a fault an owner ahead of you already reported, it holds you to the OEM procedure and the correct figure for this Base-trim 1991 LS 400.

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