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Old 12-04-2012, 10:07 PM   #176
Member#: 198281
Join Date: Dec 2008
Chapter/Region: MAIC
Location: Virginia
2005 WRX/STi
WRB of course


Originally Posted by vision.dynamix View Post
If it was faintly lit, isnt that the same as being on, dim?
No, not at all. Different symptom, different cause.

Originally Posted by Pandasaurus_rex View Post
My dummy light comes on dim all the time. It's just a poor connection because I have a pressure gauge confirming that I always have at least 30-100 psi. It needs to be fully lit to be considered "on".
^ This. It's usually cause by corrosion/moisture. I can get worse or better depending on conditions and almost always cured by simply removing and re-installing the sensor.

The sensor is ON when it's as bright as when you first turn the key to the 'on' position before the engine starts. Anything less bright is cause by a poor ground between sensor and block.
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