At what temperature the radiator fan kicks-in?

balub · 03-07-2008, 07:41 PM

I have this new scanguage hooked up to my 2000 Impreza OBS OBD2 port. I have been observing the water temperature readings on it and I came up with a few questions.

a. My radiator fan kicks in when it shows about 202 F. Does that seem high to you?
b. The temp gauge on the dash kind of behaves a bit strange. Perhaps it uses a different sensor and calibration. The needle goes past the first mark around 100F and then moves to the center when my scanguage shows 160F or so. Then it hardly moves as the scanguage temp goes all the over 200F. Can anyone explain this?

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Mulder · 03-07-2008, 08:07 PM

Both sound normal.

wrxdrvr · 03-07-2008, 08:10 PM

Sounds about right, the stock temp gauge doesn't move once the temps reach normal operating temps, 81*C/177*F to 96*C/204*F...

balub · 03-07-2008, 10:15 PM

Thanks for the confirmation. Where are the sensors located in this car? The coolant temp sensor and the temp guage sensor. As I understand, these two are different.

rkramer · 03-08-2008, 08:43 AM

the gauge really isn't a gauge as others pointed out. it is a 3 position indicator. cold, normal, and hot.

03-07-2008, 07:41 PM	#1
balub Scooby Newbie Member#: 173412 Join Date: Mar 2008 Chapter/Region: MAIC Location: Pittsburgh, PA Vehicle: 2000 Impreza OBS Silver	At what temperature the radiator fan kicks-in? I have this new scanguage hooked up to my 2000 Impreza OBS OBD2 port. I have been observing the water temperature readings on it and I came up with a few questions. a. My radiator fan kicks in when it shows about 202 F. Does that seem high to you? b. The temp gauge on the dash kind of behaves a bit strange. Perhaps it uses a different sensor and calibration. The needle goes past the first mark around 100F and then moves to the center when my scanguage shows 160F or so. Then it hardly moves as the scanguage temp goes all the over 200F. Can anyone explain this? * Registered users of the site do not see these ads.

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03-07-2008, 08:07 PM	#2
Mulder Trust no one Moderator Member#: 11170 Join Date: Oct 2001 Chapter/Region: Tri-State Location: NYC Vehicle: 02 WRX 05 GTO/11 Sonata(!)	Both sound normal.

03-07-2008, 08:10 PM	#3
wrxdrvr Scooby Specialist Member#: 79222 Join Date: Jan 2005 Chapter/Region: W. Canada Location: Canada BC Vehicle: '09 STi 297.5 WHP Blue	Sounds about right, the stock temp gauge doesn't move once the temps reach normal operating temps, 81C/177F to 96C/204F...

03-07-2008, 10:15 PM	#4
balub Scooby Newbie Member#: 173412 Join Date: Mar 2008 Chapter/Region: MAIC Location: Pittsburgh, PA Vehicle: 2000 Impreza OBS Silver	Thanks for the confirmation. Where are the sensors located in this car? The coolant temp sensor and the temp guage sensor. As I understand, these two are different.

03-08-2008, 08:43 AM	#5
rkramer Scooby Guru Member#: 118209 Join Date: Jun 2006 Chapter/Region: MWSOC Location: North Dakota Vehicle: 2002 WRX Sedan	the gauge really isn't a gauge as others pointed out. it is a 3 position indicator. cold, normal, and hot.