Temp Gauge not working

jpeddy

Registered User
I recently bought a 1990 SC and the temp gauge doesn't work, the rubber boot connector on the temp sender was missing so I bought a new connector and temp sender still nothing, I also replaced the coolant sensor and still nothing the fan kicks on but the temp gauge doesn't move it stays at cold, when I jump the wire from the temp sender it makes the gauge read hot so I don't think I have a broken gauge, I'm not sure what's going on
 
Are you grounding at the sensor to get the gauge to sweep to hot? If so that would rule out bad wire.. Possibly bad sensor I'm thinking
 
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