Question about 1992 Lexus Sc 400

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Lexus sc400 drains battery when sitting

When you diconnect battery and replace leads positive lead sparks when reconnected also if you connect the positive first the earth sparks when connected

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: 93 Lexus GS300 knock sensor electrical wiring?

knock sensor are atached to the short block of the engine normaly at the cylinder #1 side when the car is six cylinders

Posted on Sep 17, 2009

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SOURCE: I need instructions for replacement of 1995 lexus

This should help, I did mine yesterday, it is a piece of cake... just make sure you have a good spark plug socket that fits VERY snugly on the extension,and make sure you have a LONG extension for the socket... I have a 10 inch one, and I wish I used one that was longer for the back plugs on each side... Oh, and be careful to not crack the plugs in there by over tightening them... I know that it says its for an LS400 but they both have 1UZ-FE engines so its the same thing...

And make sure to spend the extra money for the Good Plugs and Wires... I got NKG's for my '93 SC400... well worth it...

Posted on Oct 05, 2009

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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.

Posted on Oct 12, 2009

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SOURCE: I have a 1995 Lexus SC400 and it has a new battery

Check your connections to to the battery and to to voltage regulator which is where one of the red cables from the battery leads to. Take it to your closest Advance auto to check the battery and alternator for free.

Posted on Jan 01, 2010

  • 14036 Answers

SOURCE: where is the fuel filter on a 93 sc400


Posted on Apr 18, 2010

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Disconnect battery lead switch everthing off then touch the disconnected lead off battery pole you should not get a spark
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Check the condition of the following:
1) Battery voltage (should be over 12.5 volts.2) Spark plugs, leads and coil3) Air filter4) Fuel filter
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I have a 1995 Lexus SC400 and it has a new battery in it, and now the battery light has come on, I don't have a manual

Check your connections to to the battery and to to voltage regulator which is where one of the red cables from the battery leads to. Take it to your closest Advance auto to check the battery and alternator for free.

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1 Answer

Constant Power wire draining battery HELP!

Okay, I think I have it. The red and yellow wire into the deck need to be connected to two different power sources.

The red wire should only be hot when the accessory switch is on. The yellow wire is for constant power to maintain memory in the deck.

Connect the red wire to a source which is only hot when the ignition switch is in accessory position -- that should solve the problem.

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1 Answer

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hi the correct sequence for disconnecting any cars battery is always the earth lead first ! then the positive lead then to reconnect ? positive first then earth if you wish to ?? just disconnect earth lead for o/night this will be safe hope this helps ?

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1 Answer

Hooking up wires to battery, solenoid, altornater and starter

hi from the uk if you look at startermotor solenoid you will see two large threaded terminals with nuts? and a third small terminal either spade or round terminal ok? now you should see thet one of large terminals already has a metal or braides strap secured to it and the actual startermotor body? LEAVE THIS ALONE the other large terminal is the one you fit the positive+ lead to from battery also there should be another lead to also attach to same terminal this one supplies power for vehicles electrics etc ensure you secure these with nut ok? now the third small spade or post terminal you will hav a thin wire nearby ?this attaches to thisterminal on its own on solenoid this wire is the one that activates starter when ignition is turned to key start position ok? as for interior light not working ? try again when you complete the above also make sure bulb is ok? ps! before you reconnect starter wires ensure the earth/ground lead is disconnected from battery and when reconnecting battery connect positive lead first then the earth lead or if you try other way you will have sparking from pos lead as you try connecting to battery hope this info is clear instructios for you to follow and wish you luck best wishes from england

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1 Answer

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see the boot switch wire lead to alarm unite and unplug wires from it, or diconnect the fuesed wire to positive battery.

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