Question about 1991 Lexus LS 400

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Why my 1991 lexus ls 400 will not get any spark to the coils packs

Why my 1991 lexus ls 400 will not get any spark to tthe coil packs i chang crank sensor, both coil packs and both ignition modules when i try to start it it just turn over continous but no start it is seems like what ever makes the coil packs get spark is not working can anyone help me? thanks.

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Lexus / Toyota make something call igniters and you have to make sure you are igniters or operational and you have to make sure that your fuel pump is working properly because if you're not getting enough fuel you can have all the spark in the world and you're not going to get a combustion

Posted on Feb 06, 2018

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All kinds of repair manuals are available here.Have a look of this may be you will get something useful. They also provide discount
1991 Lexus LS400 Service Repair Manual Download

Posted on Feb 02, 2018


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Posted on Jan 02, 2017

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SOURCE: Fuel Pump

On your 91 Lexus ls 400.
If you remove the Rear passanger seat.
You will have axces to the fuel pump.
Remove the metal cover . Disconnect the wire harnes,
Disconnect the lines.
removing the nuts you will able to remove the fuel pump.

Ok.. I hope this help on your question.
Thank you for use fixya...

Posted on Aug 19, 2008

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SOURCE: lexus ls 400 - it's $25 for a year-long subscription and gives you troubleshooting charts, parts diagrams, exploded diagrams of every system on the car, etc - it's an online factory service manual. Excellent resource that is well worth the small cost.

Posted on Sep 08, 2008

  • 69 Answers

SOURCE: radio locked 1991 lexus ls400

Consult your owners manual--in the radio section there is a master code listed---use that then reset the radio with your own code---

Posted on Jan 14, 2009

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SOURCE: cobalt no spark

I was going to say crank sensor, but you changed it. What have you done to it latley? Or did this just start? I kinda want to say PCM for some reason. Any welding done on the car latley?

Posted on Feb 26, 2009

  • 358 Answers

SOURCE: 1991 lexus ls 400

key and or tumblers are worn. need to replace one or both.

Posted on May 21, 2009

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1 Answer

What is the function of the fuel pump and ignition coil pack for my 92 ls 400 lexus

The fuel pump pumps the fuel from the fuel tank under pressure up to the fuel rail and injectors.
The coil packs provide a electrical charge (about 40,000 volts) to the spark plugs. It is this charge that makes the spark plug spark.

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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.

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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.

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Nov 20, 2010 | 1991 Lexus LS 400

1 Answer

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write me

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1 Answer

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