Question about Cars & Trucks
Holden Jackaroo 1988 fuel injected petrol 2.6ltr. I need to know the original position of the needle in the temperature gauge,if it moves to hot where does the needle normal position is
If your temp gauge has only the cold (C) or hot (H) letters then the operating range would be the width of the needle under 1/2 way between c and h. If it remains steady at slightly over 1/2 way that would be just the setting of the gauge. How to get to know where the needle would sit at a specific position in relation to water temp. Do the following
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.
Posted on Apr 20, 2013
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Posted on Jan 02, 2017
SOURCE: replace water pump
Slack off the alternator and spin off the belts then the 4 10mm nuts holding the fan pulley on lift away the fan and the pulley then its the ring of 12mm head bolts to get the pump off itself .Use a new gasket here on the rebuild .
If you have A/C the the a/c belt comes off first by slacking off the compressor and you may find the whole job easier if you pop off the top plastic fan guard .
Posted on Oct 19, 2009
your check engine lamp is probably on because the vehicles computer is not receiving a vehicle speed signal, because your speedo is not working. You need to check the sensor on the gearbox and the head unit in the dash cluster. The gearbox sensor has three wires, one is power to the sensor and should read 12volts with ignition on (but engine off), a second wire is the earth for the sensor and should read 0volts and the third is the signal wire which can read anything from 5 to 12 volts. This signal should jump between zero volts and the signal voltage (5 to 12 volts) when the gearbox is rotated by turning a rear wheel (with the other wheels chocked to prevent the vehicle moving..and rotate the wheel by hand as some of these vehicles have a limited slip differential which can cause serious accidents if you try this with the engine turning the wheels...so don't). If the sensor is not getting 12 volts, check fuses and harness connections, if the signal voltage is missing check the head unit as this comes from the head unit to the sensor. If the signal voltage does not fluctuate when the wheels are rotated, or stays at zero volts, suspect the sensor.
Posted on Dec 19, 2009
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