Fan and thermostat operation

ElusiveStranger · Posted: Sat Oct 07, 2006 7:28 pm Post subject: Fan and thermostat operation

I borrowed a digital temperature gauge, very accurate and calibrated. Water boiled in a pan at 100.3°C

I attached this to my water manifold where the heater outlet is.
Fired up the engine and allowed the temp to get up. My bus gauge/Subaru sender is approx 16-20° too low reading. I have ordered another sender, it's not a BSPT but NPT but I've been assured it will be fine.

Anyway. I watched the temperature rise on the digital. You can really see the thermostat starts to open at 76.

My fan however comes on at 85°C. The manual says it should operate at 95° - any ideas as to why?
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'78 Bay, 2 litre 091 box, EJ20 NA & the ashtray's on the 'right' side.
I don't lean forward for hills any more Grin

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Cleverchap · Posted: Sun Oct 08, 2006 7:28 pm Post subject:

No idea but be careful with the NPT thread. It will fit but its a taper thread so when it goes tight dont try and wind the sender unit in to much or you will crack the manifold.
All the Autometer stuff uses NPT threads and its quality kit.

Hope I'm not teaching anyone to suck egg's, just trying to save you a lot of money and hassel

ElusiveStranger · Posted: Sun Oct 08, 2006 9:33 pm Post subject:

Cheers CC.
I'd already bought the gauge, read on Aussie's that it worked with the Subaru sender.
It either doesn't, dodgy sender or I've got a dodgy gauge.

I got your mail BTW, fingers crossed for Friday/Sat.
_________________
The advice you receive on here is worth the paper it's written on.
Your experiences are worth shed loads to others, including the f'ups - live and learn.
Wouldn't YOU rather learn by someone else's mistakes? So would they.

'78 Bay, 2 litre 091 box, EJ20 NA & the ashtray's on the 'right' side.
I don't lean forward for hills any more Grin

Bugger, missed out on "Live fast, die young"

Cleverchap · Posted: Mon Oct 09, 2006 5:30 pm Post subject:

Ok mate, I'll be up on Saturday during the day so maybe see you then Happy

72_bay_simon · Padawan Joined: 13 May 2006 Posts: 79 Location: Hampshire

Is your fan controled from the ECU or from a thermo switch on the radiator itself?

ElusiveStranger · Posted: Thu Oct 12, 2006 12:06 pm Post subject:

72_bay_simon · Padawan Joined: 13 May 2006 Posts: 79 Location: Hampshire

I supose the simplest solution is to control it from a seperate thermo switch. Kenlowe sell an adjustable one that slips inside the top hose if your rad dosent have a position to fit one.

ElusiveStranger · Posted: Thu Oct 12, 2006 2:14 pm Post subject:

72_bay_simon · Padawan Joined: 13 May 2006 Posts: 79 Location: Hampshire

Hmmmm maybe they all do that sir? Just that no one else has ever bothered to measure it? Im afraid I cant help as I use a TSR rad with a temperature switch. I have measured that and know it opens at about 90 and closes at about 85

ElusiveStranger · Posted: Thu Oct 12, 2006 5:27 pm Post subject:

beetleseb · Posted: Fri Oct 13, 2006 6:42 pm Post subject:

Hey dude

I have a spare genuine subaru sender in a spare manifold if you want it. From a 94 2.2. Yours for whatever the postage is.

Seb
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ElusiveStranger · Posted: Tue Oct 17, 2006 5:51 pm Post subject: