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Old 03-05-2007, 03:49 PM   #1
pdippel
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Member#: 20611
Join Date: Jun 2002
Chapter/Region: Tri-State
Location: Long Island, NY
Vehicle:
2003 WRX
World Rally Blue

Default Need help troubleshooting OEM oil temp gauge

I need help troubleshooting my oil temp gauge. It is always pegged at 160 degrees as soon as I turn on the car. Turning off the car returns it to the lowest reading.

I have taken readings of the resistance of the connection to the sensor. It varies depending if it is hot or cold. I don't remember the actual readings but it was 800 ohms on one of the readings.

There are five connections to the gauge. 3 are for the lighting (I'm assuming because the mechanical boost gauge also has these 3 wires), and 2 go to the sensor. one of the 2 connections also has a connection to the cluster harness. I have not determined is this is power or ground but I would guess it is power.

How can I tell if my gauge is bad or if it the sensor?
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Old 03-12-2007, 12:19 AM   #2
burton2323
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Join Date: Dec 2006
Chapter/Region: Tri-State
Location: Clifton Park, NY
Vehicle:
2002 stage 2
MBP

Default

same exact thing just happened to me except mine was pegged at the lowest reading. somehow mysteriously fixed it when i switched it with boost (OEM gauge cluster)

check the bolt on bottom of oil pan with the wire coming out of it, thats where the sensor is

Last edited by burton2323; 03-12-2007 at 12:27 AM.
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Old 03-24-2007, 10:34 AM   #3
pdippel
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Location: Long Island, NY
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2003 WRX
World Rally Blue

Default

Yeah, I think the sensor is working because a see a difference in the resistance of the sensor wires when it's hot or not.

Does anyone know how this gauge works?
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Old 03-27-2007, 11:40 PM   #4
pdippel
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Join Date: Jun 2002
Chapter/Region: Tri-State
Location: Long Island, NY
Vehicle:
2003 WRX
World Rally Blue

Default

bump to get some response
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