Category: LS400

1994 Lexus LS400 Battery Goes Dead

This 1994 Lexus LS400 came in with the complaint that the battery would go dead while the vehicle sat. The method in which I connect my multimeter has evolved over recent years into what you see below. I start by connecting a battery jump box to the battery positive terminal and a good chassis or … Continue reading “1994 Lexus LS400 Battery Goes Dead”

1991 Lexus LS400 – Cranks & Stalls

Vehicle cranks normally but within a few seconds the engine starts to stall. If the throttle is pressed the engine will run but it surges severely. With a little research I found that the fuel pump on this vehicle operates at two different speeds and that the speeds are controlled by changing the supply voltage. … Continue reading “1991 Lexus LS400 – Cranks & Stalls”