Question about 1992 Lexus Sc 400

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My '92 Lexus SC 400 is having difficulty accelerating. ..I've recently had my wires and spark plugs replaced and I also have a new waterpump and timing belt on it..confused on what else it could be...I also replaced the throttle position sensor...please help me cell#323-422-0749

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The tps has to be set using an ohmeter and make certain you have changed the fuel filter.

Posted on Apr 26, 2010

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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.

May 27, 2015 | 1992 Lexus Ls 400

1 Answer

LT1 93 has little faults to accererate hard from low rpm, like "doubts". Keeping on high rpm acceleration is ok. Only 6k miles.


Very hard to say what is wrong, do you have any kind of car history like if the waterpump was leaking or replaced? If so like my 1994 vette the pump is in the front of opti-spark 99.9 percent of the time the water will ruin the opti. I have replacement mine many times, mainly because of the waterpump. if you replace pump you Must change opti-spark, its right there in open after you take out pump.it will save you 4 hours labor time.

Nov 18, 2013 | 1993 Chevrolet Corvette

1 Answer

I just changed the back breaks on my 92 lexus sc 400. How do u bleed the breaks


this may or may not help, Tim:

http://www.lexusownersclub.co.uk/forum/index.php?showtopic=43248

Oct 17, 2010 | 1992 Lexus Sc 400

1 Answer

I have 1992 lexus sc400 and thecar wont start. There is no power period. i;ve change the altenator and battery and still no power. No dash lights ...head lights...nothing. Battery and altenator...


is your wires on the alternator good and tight? try there good luck.... wait!!!! why did you replace them? have you had them tested? it could just be simply your starter. if so go get your money back

Aug 27, 2010 | 1992 Lexus Sc 400

1 Answer

Car has no power


bad computer, get it fixed and It will fix the car. Auto Computer Exchange in Davie FL can help.

Oct 10, 2009 | 1992 Lexus Sc 400

1 Answer

I need instructions for replacement of 1995 lexus sc400 spark plug wires.


http://www.lexls.com/tutorials/ignition/sparkplugs.html

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...

Jun 07, 2009 | 1995 Lexus Sc 400

1 Answer

1998 Lexus Gs 400 spark plug replacement


well you have to take the spark plug wires off ONE AT A TIME only o you wont mess with the timing and then use a spark plug wrench and replace them one by one replacing the wire as you go

Oct 06, 2008 | 1998 Lexus Gs 400

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