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Repair guides and support for the 5th generation Honda Accord coupe, sedan, and wagon.

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My temperature gauge stays on cold it never moves but car is not over

Why does it the temp Gage move ..it stays on cold

Beantwoord! View the answer Dit probleem heb ik ook

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Hi,

Here is an image showing the location of the two temperature sending units (or sensors) for your vehicle.

The one on the left, where the single wire black connector has been disconnected is the sending unit for the dashboard gauge.

The one on the right with the grey connector (and being held by fingers) is the ECU temperature sensor.

Block Image

(click on image to enlarge for better viewing)

To test the sending unit, disconnect the single wire black connector and using a DMM (Digital Multimeter - Ohmmeter function) measure the resistance between the sending unit terminal and earth (or ground - the engine block will be earthed). With a cold engine the resistance should be approx 140 Ohms. With a hot engine it should measure 30-50 Ohms.

If it reads approx. 140 Ohm (or more) when the engine is both cold and hot then the sensor is faulty and needs to be replaced.

If the sensor reads 30-50 Ohms when the engine is hot then there may be a problem with the wiring back to the gauge or with the gauge itself.

Be safety aware

Make sure the engine is turned OFF and that the vehicle's ignition key is in your pocket when you test the sensor. Also don't burn yourself on the engine block when the engine is hot

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Did you say that it should read 30-50 Ohms when the engine is hot?   Then you said, if the sensor reads 30-50 when the engine is hot then there may be a problem with the wiring…    I am confused.   Are you talking about two different things?

door

Hi,

What I meant was disconnect the sensor lead and measure the sensor while it is still in the engine block.

If it is reading 30-50 Ohm when the engine is hot (be safety aware turn off motor) then it is OK but if the meter is still registering full scale then there is a problem further back towards the meter.

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