How to replace water temperature sensor & oil sensor

1988 ISUZU TROOPER
188,000 MILES
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JMJTAXATION
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Not sure of location of the water sensor or oil sensor sending units. Dashboard gauges for oil & coolant do not work, but the fuel gauge works. Would like to replace these sending units so all the gauges work. Not a fuse problem as all have been replaced. I see two electrical units plugged into the engine underneath. One right above the oil pan on the right side. The other unit is right underneath the intake manifold, but I can't seem to remove the housing.
Aug 25, 2013 at 1:00 PM
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HMAC300
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here is a tip taken from tips page.for coolant sensor. oil pressure switch is below starter on right side of block



I think the picture on this is very poor. I finally found the sensor after much looking. the best way to see it is to take the passenger side tire off, and the rubber fender protector, and look up under the intake with a light. It is hard to see, but its there. It sits upside down, 2 wire connector.

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Aug 25, 2013 at 1:49 PM