Be sure you check engine oil level often. The low oil sensor will disable the ignition. If you turn A/C on the cooling fan should run continuous, Check the fan relays. Make sure coolant level is correct at recovery bottle, never open radiator cap. A scald hazard exist, be careful. This car is old and complicated, and is beyond your skill level to repair. Try to inquire here for advice, whenever possible. Don't throw good money at bad money
SOURCE: lexus 93 ls400 trying to find the amp
if you talk about radio amplifier, this located in trunk, upper side left on back rear seat its an allum. box
SOURCE: Lexus ls400 cuts out
I have the exact same car that had the exact same problem. I looked high and low for months trying to figure out the problem. I changed the fuel pump, coil packs, spark plug wires, plugs, throtle position sensor and nothing fixed it. It would crank fine, but when it warmed up it would spit and sputter like it was running out of gas. It would shut off and would not crank back until it cooled off. The computers in those cars have something wrong with them causing it to starve the car for fuel. I sent my computer to Auto Computer Exchange in Davie Fl. They repogramed the computer with a one year warenty for $305. I put it in the car and It is fixed. One other thing that might happen with this car is the insturment cluster will go out. These cars are known for that. If this happens just go on Ebay and buy a rebuilt one for less than $100 it wil have a lifetime gurantee. good luck Ed
SOURCE: Lexus sc400 electrical problem
the computer is bad and also these cars are known for the insturment clusters to go bad along with the computer. get them both fixed and it will solve your problem.
SOURCE: 1994 lexus ls400 no power pre cats red hot
it sounds like the problem is the cats, if they get to hot they possibly have collapsed inside and is blocking the system they sound like they need replacing
SOURCE: my lexus ls400 cranks over but wont start also the car goes dead
this could be a starter or the enigtion swicth yes if you crank the key to long it will kill the battery.
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