Thermostats

On 87 300zx where is the wire that connects the thermostat to temperature gage Hope a loose wire and not thermostat no reading on thermostat gage after running for 30 minutes?

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2011-09-13 12:29:21
2011-09-13 12:29:21

if i understand your question, no such wire exists. the thermostat is not electronic. it opens and closes when the temperature causes the spring to expand or contract. what seems to be worrying you may be no more than a coolant temperature sensor that has gone bad. if your car hasn't overheated in 30 minutes at idle, your thermostat is fine. hope this helps you.

The wire that you are probably talking about goes from the temperature gauge to the temperature sending unit which is on the passenger side between the fuel injectors etc. If your gauge isn't working and it is the needle type you can pull the connector off of the sensor (make sure you get the right wire, it's a single) and have someone turn the ignition on as you hold the connector to ground, the needle should move all the way up...if not the gauge or wiring is bad. ...........

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Depends on car, example: it could be 180 - 195. There is the rating on thermostat

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The 1999 Cadillac normal coolant temperature gauge reading should be 180 degrees. A 195 degrees thermostat could be used, causing the temperature gauge to read 195.

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If the thermostat is open, the ohm reading will be O/L.

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If your coolant level is fine but your engine temperature gauge is reading on the cool side all the time , your thermostat is probably sticking open. ( or you have no thermostat , or the wrong thermostat - one that has too low of a temperature range ) Anybody else have any ideas ?

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Depending on the engine, the coolant temperature in a Cadillac could be from 180 to 195 degrees. The thermostat can be changed to give a lower or higher temp reading.

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reading thermostatreading thermometer

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At least five minutes (same as if you were to eat or drink something then take an oral temperature reading).

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If the temperature gauge is reading below normal operating temp after driving a little while it may be that your thermostat is stuck open. I replaced my thermostat and it fixed mine.

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If your temperature is taken orally, the temperature of your drink can change the reading on the thermometer. If your temperature is taken rectally or in the axilla, then it wouldn't matter how long it as been since you drank something.

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Be careful there is a temperature coolant switch mounted next to the thermostat housing. I thought this was the sensor and replaced it by mistake. There is another sensor.

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If you are referring to the temperature reading on the gauge, then it's possibly a bad thermostat.It will also read 'cold' until the engine has sufficiently warmed up.Lack of fluid (water and/or antifreeze) in the radiator.Low engine temperature (bad thermostat).Low coolant level.Bad gauge.Wiring issue.Coolant temperature sensor bad or not correctly grounded.Problem in an electornic control module.

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it is a psychological process because it connects to your brain

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No, this varies from person to person, but is within +/- 0.5 degrees celcius of this figure. In fact, the temperature reading on a medical thermometer may vary depending on where the reading is taken. For example, an auxiliary (armpit) reading will give a lower temperature reading then a rectal reading, just as an oral reading will be different to a temporal reading.


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