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johnathan1 · Joined: 08 Oct 2007 Posts: 308 Location: Downey, Ca

I'm trying to figure where the temp. needle on the stock gauge should point when at operating temperature...as mine seems to be acting a bit funny, so it would be nice to have a bit of a reference point.

Needle positions during various conditions would be good, like when idling, cruising on the freeway, around town, ambient temperature, etc...

Thanks guys!!

_________________
-1977 924, 4-Spd...Gone
-1987 Toyota Supra Turbo, Pearl White, BPU, 300RWHP @ 10psi.
-1989 Mercedes-Benz 300SEL

WARNING: MAY CONTAIN TRACES OF AUDI OR VW!

Mike924 · Joined: 12 Aug 2004 Posts: 2601 Location: IoW UK

Normally it sits just inside the outer (upper?) edge of the white box on the left of the gauge.

When I'm sitting in traffic, it gradually climbs to just under half-way on the scale, at which point the fan (single) cuts in and the needle jerks back down to about half-way towards the white box (about 1/3 full-scale, maybe).

Once I'm moving again the needle settles to its normal position.

I've never seen the needle past the half-way mark.
_________________
1985 Porsche 924 'Lux', Kalahari Beige (my ex)
1993 Porsche 968 Coupe, Midnight Blue, 6 spd

'There is no substitute for a little grease under your fingernails.' - Chrenan, 924board.org

Ozzie · Posted: Thu Jan 17, 2008 6:20 pm Post subject:

Mine acts the same way but will sit around the first mark on the open road, at idle it will creep up to nearly the red, fan kicks in and it will drop back to half. It will stay around the half way mark in traffic.
_________________
Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
Montego Black on black/red
Engineer of Electro/Mechanical Systems Maintenance

Nobbi · Joined: 24 Aug 2006 Posts: 1398 Location: Germany

Same as Mike924 ......

Nobbi

morghen · Joined: 21 Jan 2005 Posts: 9102 Location: Romania

i think that this question was asked not long ago.
As it idles its way to a fully warmed up engine it stops at the first white line after the white shape....it sits there if i leave it be or i gently drive it.
During winter it just stays there(first white line) no matter how i drive the car.
In trafic(summer) it climbs to near the middle then fan kicks in...then it points again to the first white line...then it climbs to the midle again...etc etc. If i drive the car hard in the summer it will stay near the middle(but not past it)
_________________
Supercharger and EFI kits
https://www.the924.com

Rich H · Posted: Thu Jan 17, 2008 8:17 pm Post subject:

Same here.

ITs worth pulling off the connector and cleaning it up with abrasive and dielectric grease (Or vaseline!) might improve things a bit. All resistance based gauges (ie most of them) suffer when corrosion gets into the connectors.
_________________
1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec

Mike924 · Joined: 12 Aug 2004 Posts: 2601 Location: IoW UK

+1^
_________________
1985 Porsche 924 'Lux', Kalahari Beige (my ex)
1993 Porsche 968 Coupe, Midnight Blue, 6 spd

'There is no substitute for a little grease under your fingernails.' - Chrenan, 924board.org

Rich H · Posted: Thu Jan 17, 2008 10:35 pm Post subject:

BTW its a damn site easier to reach if you take out the dizzy... (Or fit EFI!)
_________________
1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec

johnathan1 · Joined: 08 Oct 2007 Posts: 308 Location: Downey, Ca

Mike924 · Joined: 12 Aug 2004 Posts: 2601 Location: IoW UK

johnathan1 · Joined: 08 Oct 2007 Posts: 308 Location: Downey, Ca

Ozzie · Posted: Fri Jan 18, 2008 7:52 pm Post subject:

Measure your condensor - go to your nearest FLAPS and get a fan and shroud as big as will fit.
Something like this
http://cgi.ebay.com.au/12-INCH-LOW-PROFILE-HIGH-PERFORMANCE-THERMO-FAN_W0QQitemZ190189014089QQihZ009QQcategoryZ72469QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
_________________
Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
Montego Black on black/red
Engineer of Electro/Mechanical Systems Maintenance

johnathan1 · Joined: 08 Oct 2007 Posts: 308 Location: Downey, Ca

Forgive me, Ozzie, but what is FLAPS?

And I used an infrared thermometer to measure various temps in the engine bay today...

It seems to sit at around 194F (showed 2nd mark on temp gauge) and the fans are on...then I noticed that the fan turned off for a minute or two, and the engine temp (measured at thermostat housing) got to around 225F before the fan kicked on again... O_O Then the temp started dropping again...at 225F, the temp gauge needle was sitting at the third bar... Is this normal? Or should my fan be coming on sooner?
_________________
-1977 924, 4-Spd...Gone
-1987 Toyota Supra Turbo, Pearl White, BPU, 300RWHP @ 10psi.
-1989 Mercedes-Benz 300SEL

WARNING: MAY CONTAIN TRACES OF AUDI OR VW!

Ozzie · Posted: Sat Jan 19, 2008 8:08 am Post subject:

friendly local auto parts store.
_________________
Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
Montego Black on black/red
Engineer of Electro/Mechanical Systems Maintenance

johnathan1 · Joined: 08 Oct 2007 Posts: 308 Location: Downey, Ca

Nobody has any feedback on my temperature findings? :[
_________________
-1977 924, 4-Spd...Gone
-1987 Toyota Supra Turbo, Pearl White, BPU, 300RWHP @ 10psi.
-1989 Mercedes-Benz 300SEL

WARNING: MAY CONTAIN TRACES OF AUDI OR VW!