20 Most Recent 1990 Lexus LS 400 - Page 3 Questions & Answers


IF IT STARTS WITH STARTER FLUID OR EVEN IF YOU WERE TO BUT SOME GAS IN IT MEANS NO FUEL IS GETTING TO INTAKE IT COULD BE A CLOGGED FUEL FILTEROR SOME KIND OF PROBLEM WITH FUEL LINE BUT THE MOST LIKELY THING IS THE FUEL PUMPYOU CAN TRY TAKEING OFF THE FUEL LINE AT THE EASYEST PLACE YOU CAN FIND TURN THE KEYTOSTART FOR 2 OR 3 SECOUNDS SEE IF YOUR GETTING GAS COMEING OUT OF LINE IF NOT YOU NEED TO CHCCK TO SEE IF THERE IS POWER GOING TO THE PUMP CHECK FOR FUEL PUMP RELAYS OR RELAY MOST LIKELY IS THE PUMP IS BAD THERE A WARE PART AND NEED TO BE REPLACED EVERY 10 TO12 YEARS OR SO GOOD LUCK

1990 Lexus LS... | Answered on Dec 26, 2013


AKA THROTTLE POSITION SENSOR IS ON THE SIDE OF THE THROTTLE BODY.

1990 Lexus LS... | Answered on Nov 15, 2013


maybe a vacuum line has a hole or is off completely. it could be a brake booster even.

1990 Lexus LS... | Answered on Nov 14, 2013


sir pl z told me Toyota 1uz assamble the head ,so one time i com pleat the trque, than agan the open bold and retired , and pl z bold secvence titnes

1990 Lexus LS... | Answered on Nov 09, 2013


Hatterasnc,

You're alternator has gone bad and the vehicle was running on battery power. The "clicking" sound is your now dead battery that does not have enough power to turn over the starter. You might also want to check your power steering pump for leak. This is a know problem with early LS400s and will most likey be the cause of the alternator failure. I just dropped $1050.00 to fix the very same promblems you have.

1990 Lexus LS... | Answered on Sep 25, 2013


the ignition module has to be at fault giving no signal for spark control for your ignition coils to fire

1990 Lexus LS... | Answered on Aug 31, 2013


if the battery is all right, the starter or igniton have a problem.
obd2 tools

1990 Lexus LS... | Answered on Aug 05, 2013


does it not unlock any of the doors? if it doesnt unlock any doors run down to the dealer and give them your vin number they will be able to cut you a key based on that. make sure you take your registration to prove you own the car. fortunately your car is the first gen ls400 because if it was much newer it would have had to had a key programmed to start it. keys at the dealer shouldnt be too much but if they are too expensive, just snag a blank off ebay they are only about 10 bucks. good luck!

1990 Lexus LS... | Answered on May 23, 2013


take the timing belt off reset the crank at 0 with # 1 piston at TDC ensure that both cams are up at twelve 'oclock with belt on, when the tension is released and the tensioner is tightened turn the crank atleast 360 degrees and ensure that the timing does not shift before starting engine

1990 Lexus LS... | Answered on May 11, 2013


the timing belt is not aligned on the correct tooth.....

1990 Lexus LS... | Answered on Apr 12, 2013


The RPM signal comes from the crank sensor. The harness connector needs to be checked for a 5v reference signal and the ground side needs to be checked for a good ground. This test is to rule out the computer as being the issue. Then the signal wire needs to be checked for a good signal. When the crank sensor fails you get not spark and no fuel., You will need a waveform viewer to determine if the sensor has failed.
You will need a basic meter to determine if the computer has failed.

1990 Lexus LS... | Answered on Apr 10, 2013


You blew the fusible links,here they are.They are under hood,maybe close to battery in box.Just follow positive battery cable to it.

1990 Lexus LS... | Answered on Mar 10, 2013


After you connect the good battery to the bad one (the car makes alarm sound), just start the car and the alarm will go off.

1990 Lexus LS... | Answered on Jan 31, 2013

Not finding what you are looking for?
1990 Lexus LS 400 Logo

394 questions posted

Ask a Question

Usually answered in minutes!

Popular Products

1991 Lexus LS 400
1991 Lexus LS 400

516 Questions

1994 Lexus LS 400
1994 Lexus LS 400

240 Questions

1996 Lexus LS 400
1996 Lexus LS 400

171 Questions

1995 Lexus LS 400
1995 Lexus LS 400

151 Questions

1998 Lexus LS 400
1998 Lexus LS 400

91 Questions

Top Lexus Experts

Marvin
Marvin

Level 3 Expert

85206 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22484 Answers

Jonah Oneal

Level 3 Expert

14092 Answers

Are you a Lexus Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

View Most Popular

LS 400 Lexus

  • LS 400 Lexus

Most Popular Question

que puedo hacer con mi lexus ls 400 de

  • Cars & Trucks
Loading...