Question about 1989 Isuzu Trooper

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I have a petrol 2.6 efi 1989 jackaroo and i can not find the temp sender,can some one help please

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  • Isuzu Master
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Engine Coolant Temperature (ECT) Sensor OPERATION The Engine Coolant Temperature (ECT) sensor is mounted in the intake manifold and sends engine temperature information to the ECM. The ECM supplies 5 volts to the coolant temperature sensor circuit. The sensor is a thermistor which changes internal resistance as temperature changes. When the sensor is cold (internal resistance high), the ECM monitors a high signal voltage which it interprets as a cold engine. As the sensor warms (internal resistance low), the ECM monitors a low signal voltage which it interprets as warm engine.

Posted on Jul 31, 2010

  • Duane Wong
    Duane Wong Jul 31, 2010

    TESTING





    Fig. 1: Submerge the end of the temperature sensor in cold or hot water and check the resistance







    Fig. 2: Temperature sensor resistance values



    1. Remove the ECT sensor from the vehicle.
    2. Immerse the tip of the sensor in container of water.
    3. Connect a digital ohmmeter to the two terminals of the sensor.
    4. Using a calibrated thermometer, compare the resistance of the sensor to the temperature of the water. Refer to the engine coolant sensor temperature vs. resistance illustration.
    5. Repeat the test at two other temperature points, heating or cooling the water as necessary.
    6. If the sensor does not meet specification, it must be replaced.


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Where is the fuel pump located on a isuzu v6 holden jackaroo motor 1993 petrol


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EFI temp switches, are covered in the FSM
but they do the same on all cars
EFI
it lets the ECU know of the coolant reaches full temp or partial
and all ECU use that to set fuel mix to perfect as engine warms.
on new cars we use only a single thermistor sensors called ECT (old WTC) to do all that.
this old system is very barbaric, in todays terms

ok did you try rockauto.com
http://www.rockauto.com/catalog/raframecatalog.php?carcode=1277591&parttype=4748

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non turbo ,right?
there are up to 4 temp senders.
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and 2 temp switchs.
and A/C cut for overheat.
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getting the correct one takes great skill.
id use SMP catalogs to match it.
smp makes many

http://www.standardbrand.com/online%20catalogs-ecatalog/content.aspx


TS73 is gage
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Automatic choke


you forgot to say car model name, , or year.
Always state car exact type, and year, first.
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1989 1.3L had carb.
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When jackaroo 1988 is motoring where does the needle in the temperature gauge normally be


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Remove the temp sender unit and attach an earth wire to the body of the unit to earth. Place the sender unit in a container of water up to the threads .Put a mercury thermometer in the container beside the sender unit Apply heat to the container and watch the gauge needle move in relation to the thermometer reading. Operating temp will be about 80 degrees C on the thermometer and that would be about 1/2 way on the gauge.

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My 1989 Toyota sr5 5 speed problems first off it shutters when u first take off is that normal or do I **** at driving stick and second my temperature gauge goes to allmost over heat then goes back to...


with the temp gauge the sender unit is a resistor that is affected by heat. The hotter the water the less resistance the hotter the reading on the gauge. Knowing that check for a wire shorting out to the sender unit or replace the sender.. If you have a carby it sounds like you have a problem with the accelerator pump not working. This gives a squirt of fuel as you open the throttle to compensate for the extra air coming in to the engine. If you have efi. accelerator position sensor may be a good place to start looking

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1 Answer

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