Fusebox diagram under dash
SOURCE: R & R 1991 Lexus Ls400 Gear shift knob
slide the lower part of shifter handle down and you will find two screws, but there is 2 wires coming in from center console for overdrive button.you have to remove the center console cover and remove the 2 wires from connector and then pull up threw handle.when you go back together you will have to guide them back threw the handle.
SOURCE: Replace/fix starter on 1991 Lexus LS400
Not too bad. Not much room, just enough to drop the starter. It is probably easier to go up through exhaust if you can get your exhaust shield off the manifold .
SOURCE: My 91 lexus ls400 stopped firing up. It turns over but no go.
check/change the crank sensor and check your ignition module
SOURCE: how to change the fuel pump on 1991 lexus ls400
remove rear seat then remove cover in the trunk, you will see a cover remove thatcover and remove 8 bolts holding fuelpump in tank,also dissconnect connector to fuelpump with bolts removed the pump pulls right out.hope this helps.
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