Question about 1993 Lexus Ls 400

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Fuse diagram lexus 1993 lexus LS400 - 1993 Lexus Ls 400

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You should find everything you to know here: http://www.lextreme.com/misc.html GL.

Posted on Jan 16, 2018

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6ya6ya
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SOURCE:

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Posted on Jan 02, 2017

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Molson02536
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SOURCE: 1993 Lexus Ls400 loss of power at 2500-3000rpm

Check your MAF and MAP sensor. The first 80% of your throttle signal from the TPS works with the O2 sensor to try to keep the air fuel ratio to 14.7 to 1 with the ECM controlling the fuel injector spray time and timing the ignition. After the 80% to WOT the ECM puts the O2 sensor in to an open loop and takes the Reading form the MAF and MAP sensor to run the engine richer so there will not be any Detonation to the engine and burning holes in the valves for running too lean. That is why it always feel like you get a little more when you ease off on the gas peddle from WOT. Recap check the TPS, MAF,and MAP sensor and wires to those sensors, if you can get the car scanned that would be great and you may find out which sensor may have gone bad, the other thing to is the fuel pressure regulator may be going bad and at WOT the pressure may be to high causing it to run to rich causing the loss of power. Good luck and hope this helps. 

Posted on Jul 04, 2009

  • 1 Answer

SOURCE: 1993 Lexus LS400 acceleration stalls or surges

I HAD THE SAME PROBLEM WITH MY CAR. 93 LS 400. THAT WOULD BE YOUR FUEL FILTER OR THE FUEL PUMP GOING BAD. TRY CHANGING THE FILTER FIRST. THE DEALER TRIED TO CHARGE ME $980 TO CHANGE FUEL PUMP.

Posted on Jul 23, 2009

MNfisherman
  • 11896 Answers

SOURCE: Replace/fix starter on 1991 Lexus LS400

Not too bad. Not much room, just enough to drop the starter. It is probably easier to go up through exhaust if you can get your exhaust shield off the manifold .

Posted on Aug 07, 2009

  • 1 Answer

SOURCE: 1993-lexus ls400 instrument cluster

WE ARE AN AUTO REPAIR SHOP IN ROCK HILL SC. WE HAVE RUN INTO THIS PROBLEM BEFORE. WE CAN REPAIR THIS, PARTS AND LABOR APPROXIMATELY 625.00, WITH A 12/12 WARRANTY. CONTACT EAST COAST PERFORMANCE AT 803-329-3868

Posted on Nov 19, 2009

  • 1 Answer

SOURCE: how to repair code13 - RPM signal no.2 Lexus Ls400

HOW TO FIX CODE 13 1995 LEXUS SC400

Posted on Nov 30, 2010

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