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Gtir Motorsport club » Tech room » Help and Advice » water temperature gauge

water temperature gauge

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1water temperature gauge Empty water temperature gauge on 16th September 2017, 12:11 pm

Stu

Stu
Admin
Admin
Some times my water temperature will just drop off.
I have a obd1 reader installed and when I check the temperature is reading on that so it's not the sensor and not a fault before the ecu.
It must be a fault somewhere between the ecu and gauge.

My question is.

Has anyone else had this and what was it?

Could it be the actual gauge that's faulty.

The needle will drop and then raise again..
Some days it's fine. Other days the needle stays down.


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2water temperature gauge Empty Re: water temperature gauge on 16th September 2017, 5:07 pm

Mr B

Mr B
gtir technician
gtir technician
Gauge is separate from ecu so you need check whole circuit including the gauge single wire sender. could be as simple as sender wire connector, sender or gauge intermittent open .
Regulated voltage to sender is either 8V or 9V not sure which without testing one. as sensor heat resistance drops and more current flow to earth drives needle up (sensor earthed via block) .

3water temperature gauge Empty Re: water temperature gauge on 16th September 2017, 6:16 pm

Stu

Stu
Admin
Admin
Thanks B.
I will have a look at it monday.


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