1990 Lexus LS 400 - Page 5 - Answered Questions & Fixed issues


there is a fuse box under the driver side dash near the pedals. you must first remove the protective cover from the outside and then you can see the fuse control panel.


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1990 Lexus LS... | Answered on Feb 05, 2011 | 540 views


i think you need to reissue your question. it doesnt really make sense what u are saying

1990 Lexus LS... | Answered on Jan 23, 2011 | 65 views


Although the LS 400 is a great car, the engineering could have been a little more "consumer oriented," when it comes to repairs.
I'm sorry to be the bearer of bad news, but the starter is in the middle of the engine, underneath the intake manifold. This means you must remove the negative battery cable, empty the coolant, remove the air intake assembly, the throttle body, all of the vacuum lines, hoses etc. and then the intake manifold. The starter is located under the intake.
If you are a "back yard" mechanic, you can do this yourself. It's not very dificult, just extremely tedious. It also doesn't require any special tools, just the basics, such as a metric ratchet set and open end wrenches. It would take a pro about 5 hours.
Good Luck!
Brose

1990 Lexus LS... | Answered on Jan 19, 2011 | 602 views


the bearings in the water pump are going bad, it should be replaced asap

1990 Lexus LS... | Answered on Jan 16, 2011 | 122 views


replace the temputer sensor and should be diy friendly

1990 Lexus LS... | Answered on Jan 14, 2011 | 281 views


it is not nessesary to drain it, if you have a way to get the tank back up when you are done, it makes it a bit harder to work with just be careful with your body stadic, empty or full, stadic will cause fuel to ignite ground yourself to prevent this

1990 Lexus LS... | Answered on Dec 25, 2010 | 31 views


sometimes your alternator works when it wants to its a sign of it starting to go bad how often does your battery go dead how long does it take before car will not start up make sure battery terminals are clean and tight have it tested again there is no way to reset battery do you have a light in your trunk who told you something was staying on killing your battery

1990 Lexus LS... | Answered on Dec 24, 2010 | 336 views


Hello,

The fuel regulator is located behind the back seat. There is a 9" access port in the center of the fuel tank behind the back seat. located in the center of the open port you will see a fuel hose with some hose clamps....the 3 semicircular bolts that line the bottom of the portal anchor the bracket that holds the fuel regulator mounted deeper in the fuel tank.

Take care and good luck


1990 Lexus LS... | Answered on Dec 02, 2010 | 280 views


How old is the exhaust converter,could be plugged
Gas filter clogged?

1990 Lexus LS... | Answered on Nov 24, 2010 | 195 views


This problem is caused by a dirty idle speed control valve and throttle valve, do the following procedure i have used for many years to help improve this condition.

To correct this problem I want you to get a can of intake cleaner (ABOUT $5.00) from any local auto parts store like NAPA or Carquest, do not use carburetor spray, intake cleaner only or u will damage the Teflon coating inside the throttle valve and air bypass valve, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.


1990 Lexus LS... | Answered on Nov 23, 2010 | 412 views


make sure the spark timing is right. check the timing mark is correct.

1990 Lexus LS... | Answered on Nov 19, 2010 | 52 views


Overtime an ignition switch wears out. Sometimes to where you cannot turn they key anymore so you should have your ignition switch replaced. You will have another key on your key-chain but keep your old key to unlock your doors and truck.

1990 Lexus LS... | Answered on Nov 16, 2010 | 155 views


More often than not, the starter will be located on the under side of the motor on the same side as the battery. trace the red or positive battery cable and it will lead you right to it. It will be short approx. 8 inches long and about the same diameter as a Mayonnaise jar.

1990 Lexus LS... | Answered on Nov 11, 2010 | 36 views


I suspect you have a caliper dragging. This will cause the rotor to overheat and expand, locking up the brakes until it cools down. You could also have a warped rotor that is heating up and getting stuck on the brake pad - either way I would suspect the caliper ( s ) . You can check them by trying to spin the wheels 1 at a time with vehicle raised and brakes warm. If a caliper is dragging and you have a warped rotor, that wheel won't spin smoothly or at all. Another indication would be a pulling to 1 side or the other when brakes are warm. You could actually have a dragging caliper AND a warped rotor. I would start there and to the test to see if this is the problem.
Good luck!

1990 Lexus LS... | Answered on Nov 06, 2010 | 131 views


white smoke is an indaication of coolant entering the combustion chamber either a head gasket or intake gasket

1990 Lexus LS... | Answered on Oct 29, 2010 | 163 views


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 | 212 views


Call around to junk yards, they can find you a used one of they do not have one. Call an auto parts store. Look on ebay motors.Look on craiglist.

1990 Lexus LS... | Answered on Sep 22, 2010 | 65 views


Go to the dealer and have it serviced sounds like a mas air flow sensor.

1990 Lexus LS... | Answered on Sep 22, 2010 | 59 views


It does sound like the sensor is either dirty inside the tank or bad. You will have to remove the overflow tank and the sensor is torward the bottom of the tank and easily replaced.

1990 Lexus LS... | Answered on Mar 27, 2012 | 313 views

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