Question about 1993 Isuzu Trooper

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93 isuzu bighorn

Engine revs at 3500 to get to100 kph or 3000 rpm for 80 kph i suspect the overdrive gear is not functioning in my auto transmission.

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  • keithmnz Dec 09, 2008

    My overdrive is also not cutting in, so stuck in 3rd gear at 3000 revs. Where is the sensor I need to fix, can anybody please please help..?????

  • Anonymous Mar 21, 2014

    will not pick up power beyond 3000 rpm. no transmission codes present,new tune-up

  • Anonymous Mar 25, 2014

    I replaced the injectors, the vehicle will idle fine and run as long as I stay under 40 kph but when I hold the throttle at about 3000 rpm after about 30 seconds the rpm starts to drop down to stall out

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A temperature sender located at the thermostat housing was found to be faulty sending permanent earth to tranmission making the overdrive gear inoperable . when replaced the vehicle achieves 100kph from 2500 rpm as true.

Posted on Sep 19, 2008

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