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Thread: 1993 LS400 gearbox issues?

  1. #16
    Junior Member Automotive Encyclopaedia roadkill's Avatar
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    Default Re: 1993 LS400 gearbox issues?

    Hi,

    just tested the voltage (bugger, didn't test the earth) of the wires. The brown had 0, the next was green with 0v, then next is yellow with 1.6/1.7v and the last is the the blue with 5v. That was with the engine running at idle. Should those voltages be different if the engine is actually running? I'm going to go and check the brown is earthing too.

    ***edit the two wires on the right that had 0v are both earthing. As i understand it there should be 1.7v for the idle circuit and then there should be 5v for the actual throttle position through the potentiometer correct?

    bEn
    Last edited by roadkill; 12-08-2012 at 09:00 PM.
    FJ40 landcruiser
    HJ47 landcruiser
    FJ55 Landcruiser
    MS65 Crown

  2. #17
    Junior Member Automotive Encyclopaedia
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    Default Re: 1993 LS400 gearbox issues?

    its not adjusted right

    yellow should be bout 0.6 volts

    then climb to about 4v

    green should change from 0v at idle to 12v just off idle as u crack tps

    but adjust the yellow first
    then check u have 0 at green

    anyway u could fk around with it for days or weeks
    i would take it to someone with a scanner and get live data out of it
    or atleast check ecu for fkt capcitors to save u fking round checking everything

  3. #18
    Junior Member Automotive Encyclopaedia roadkill's Avatar
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    Default Re: 1993 LS400 gearbox issues?

    Hi,

    yeah ecu will be coming out tonight hopefully. Going to go and attack it now.

    bEn
    FJ40 landcruiser
    HJ47 landcruiser
    FJ55 Landcruiser
    MS65 Crown

  4. #19
    Junior Member Automotive Encyclopaedia roadkill's Avatar
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    Default Re: 1993 LS400 gearbox issues?

    Hi,

    so, ecu out. Checking the caps - is this what i'm looking for?





    The first pic has the "cats piss" at the bottom of it. The second one has what looks like a corroded like base.

    bEn
    FJ40 landcruiser
    HJ47 landcruiser
    FJ55 Landcruiser
    MS65 Crown

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