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Sensor Resistance Test

WARNING: This page is about a different car, the 1991 Mitsubishi Pickup, 1991 Mitsubishi Montero, and 1991 Dodge Ram 50. However, it is still accessible from the selected car via links, so may be relevant.

Remove thermosensor (sending unit) from engine block. Place sending unit in hot water of 158°F (70°C) temperature. Check sensor resistance with an ohmmeter. Thermosensor resistance should be 90-117 ohms at 158°F (70°C). If thermosensor resistance in okay, go to GAUGE RESISTANCE TEST. Replace thermosensor if resistance is not as specified.

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