Question about Lexus LS 400

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Hello, i changed my ignition control module and sparkplugs but still no spark. it's for a 1990 lexus ls 400. can you help please. thankyou.

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  • Navin Johnson
    Navin Johnson Jul 22, 2009

    hello, and thankyou for the help. i will try that method.

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  • Lexus Master
  • 76,682 Answers

IF U HAVE AN IGNTION PROBLEM U WILL HAVE A TROUBLE CODE FOR IT, THE PROBLEM YOU MOST LIKELY HAVE IS THE CRANKSHAFT POISTION SENSOR, THE SENSOR IS LOCATED IN THE TIMING COVER.

Posted on Jul 22, 2009

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2 Answers

My lexus ls 400 will run for 30 minutes then stall and it will take at least 30 minutes for it to start


check engine temperature could be overheating or you have faulty throttle control motor.could have faulty mass air flow sensor.have vechicle code scan before buying new parts.

Oct 08, 2012 | 1990 Lexus LS 400

1 Answer

1994 lexus sc400 no spark on driver side ,coil was replaced


Did you reset the computer after installing the new coil? Culprit, "now" has to be only one thing I can think of. the "computer" or the fuse that might be in place for that coil. If you have spark on the passenger side, it can not be the ignition module, cap or rotor. Take both battery cables off the battery and wait 30 min. Rehook the battery cables. See if the new coil kicks in. If not, check the fuse. If not bad, problem left is the computer.

Sep 24, 2012 | 1990 Lexus LS 400

2 Answers

Where is the ignition coil on a 1999 lexus ls 400


The ignition coils are built on the spark plug boot. You have to take the plastic cover off thats on the valve covers. The cover usually says V8 four cam on it.

Mar 07, 2011 | 1999 Lexus LS 400

1 Answer

Does the 1990 Lexus LS400 master cylinder come with traction control?


traction control is a separate system. If traction control or ABS is a problem they are taken out of the loop and the normal brakes still work. The master is for the brake system/ The ABS module and valve body and wheel sensors are your traction/antiskip system.

Jul 24, 2010 | 1990 Lexus LS 400

1 Answer

Where is the ignition control module at on the lexus ls 400 1990?


The location is Under hood, passenger side, front side of shock tower, mounted on top of fenderwell. Here is a picture of what it is that you are looking for:
a9d432c.jpg Easy to get to and easy to replace. I'm afraid it might not be so easy on the wallet however. Do me a favor and let me know if you have any further questions about your vehicle. Thanks for rating my response and for using FixYa!

Jul 19, 2009 | 1990 Lexus LS 400

1 Answer

Gluster gauge won't illuminate


Hello hayeizmyhome...Very low mileage for a 1990 model. However... this is usually around the mileage interval the dreaded instrument cluster, panel and dash light failures start...lights will flicker, then go out, gauges will start going up and down, lcd's will become hazey and hard to read....etc.
The instruments are illuminated both day and night while the ignition is on.
When the ignition is off, the panel goes dark and you can’t see the gauges at all.
The lexus has an electronic circuit board behind the inst. cluster that has been the problem. Very expensive repair if done by dealer.
*TIP* This circuit board can be repaired if you know a good electrical technician much cheaper.
The recommended timing belt replacement interval on the LS is 120k...water pump should be replaced also, the timing belt runs the water pump. The LS has a non-interference engine, meaning if the belt breaks, no damage will be done to the engine...
Hope this answers your questions..and your lexus runs for many more miles...with proper care and maintainnace, it will.

May 19, 2009 | 1990 Lexus LS 400

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