Question about 1995 Lexus LS 400

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Why do my 1995 ls400 engage in a gear ,feel the jerk but only make a noise ,speedometer shows speed when in gear but wont move


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I agree somewhat with Pfeiffer, and it may be overfilled, or under filled. The problem really lies in the gunk being loosened up and then starts moving through the filter and transmission if you have too much fluid well its about the same as having too little. The gunk gets into the tiny little orifices and wreaks havoc. The other possibility look at the shifting solenoids. LS400 is a bullet proof transmission and very picky.

Posted on Jun 01, 2015

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Try adding a bottle of Lucas Oil Transmission Stabilizer...add when motor is warm...tranny filter is most likely clogged and dirty...this additive works on most...

Posted on Nov 16, 2014

  • Anonymous Nov 23, 2014

    No reason for a trans filter to be dirty & cause a problem & NO Additives are going to resolve your internal trans problems


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Posted on Jan 02, 2017

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SOURCE: 1991 lexus LS400

Yes the ECM can indeed cause these issues, if they (the shop who diagnosed it) replace it and it does no cure the problem then they just bought you a new ECM as they are not returnable.

Posted on Sep 23, 2008

  • 65 Answers

SOURCE: The speedometer, odometer and trip meter have

yes, fuses? also had this happen when alternator was not producing enough amps

Posted on Jul 07, 2009

  • 73 Answers

SOURCE: Ls 400 speedometer works sometimes and wont work

insturment pannel is bad.

Posted on Oct 02, 2009

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SOURCE: 1994 Lexus LS400 - 140,000 miles Check Engine


The check engine light comes on mostly when you have bad gas tank cup,or you don't tight enough the gasoline.Go to any auto-zone and request the obd scanner,at no charge just leave your driver license or credit card,connect the scanner follow the instructions.They will check up and the check engine light will come off in the next 3 to 5 days.

Thank you !!

Posted on Jul 13, 2010

  • 108 Answers

SOURCE: 1995 Lexus SC400 V8 Engine. Everything is bone

Since both gauges died at the same time, I would suspect either a connector issue with the dash cluster, or a signal issue from the computer. The RPM signal originates at the ignition and the speedo signal at the VSS. The likelyhood of those both dying at the same time is very slim. An easy way to check is to attach a scan tool and check in the computer for an RPM signal (running) and a VSS signal while driving.

Hope this was helpful!

Posted on Sep 17, 2011

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