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Join Date: Aug 2003
Location: Austin, Texas
Posts: 717
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Thermo-switch or Thermostat?
the thermo-switch, is the thing that turns on the radiator fans, correct? i'm going to borrow a multi-meter from work tomorrow to test my thermoswitch, although there is no doubt in my mind, that it is bad... since my radiator fans would occasionally/never come on automatically...
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'82 928S  '85.0 944 Not Awesome - Being Parted Out 
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11-02-2003, 11:01 PM
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Location: Phoenix, AZ
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haynes manual has a pretty simple test.
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87 951, K27/6, Almond Beige, 17" Turbotwist 87 944S, alpine white, 5sp died a violent death 84 944, silver/brown, auto, gone but not forgotten "may the force be with you" |
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11-03-2003, 07:13 AM
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Location: Lexington, KY, USA
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Most likely the thermoswitch gone bad. If not, check the fan relay, although it is most likely the thermoswitch in this case.
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'85.5 944 Kalahari Beige/Brown 5-speed 76K miles color-matched fuchs SOLD |
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11-03-2003, 07:15 AM
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Location: West Haven, Connecticut
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A quick fix is to buy a 2 way toggle switch from autozone or radio shack and hook up some wire to the swich then to the fan switch plugs and u can switch the fans on of off when u want to from inside the car. its a cheap fix for the moment until you get the new thermoswitch.
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-2002.5 GTI VR6 24V 6SPD -Kalahari Beige 89 Porsche 944S2 -87 VW GTI 1.8 16v -2007 Ford PIMP(free)star ...company car.... -1999.5 Jetta VR6 |
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11-03-2003, 07:41 AM
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Borrow a multi meter? Why don't you buy one? That and a 12 VDC test light.
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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11-03-2003, 11:04 AM
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thermo switch is the same part# for an '84 rabbit.
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87 951, K27/6, Almond Beige, 17" Turbotwist 87 944S, alpine white, 5sp died a violent death 84 944, silver/brown, auto, gone but not forgotten "may the force be with you" |
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11-03-2003, 01:52 PM
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dammit, i wonder if it is cheaper for the rabbit? i had already ordered the thermo-switch anyway last night from pelican, i was just making sure i did the right thing...
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'82 928S '85.0 944 Not Awesome - Being Parted Out
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11-03-2003, 02:42 PM
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eh, $9 for the "porsche" thermo-switch, $8.52 for the "VW" thermo-switch...
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'82 928S '85.0 944 Not Awesome - Being Parted Out
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11-03-2003, 02:45 PM
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Just thinking out loud
Join Date: Nov 2001
Location: Close by
Posts: 6,885
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ds475, I have a multimeter and a test light, along with a new thermo switch I need to put in my 83. Is your's early or late 85? I procrastinate, but my fans work, at a later temp than b4, though.
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83 944 91 FJ80 84 Ram Charger (now gone) |
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11-04-2003, 09:09 AM
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early 85. i was also wondering, is coolant going to drain out when i take the old thermoswitch out, to put in the new one?
what do you need the multimeter/test ligtht for if you already have the new thermo-switch? if i were you, i wouldn't even screw with testing the old one... just slap the new one in.
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'82 928S '85.0 944 Not Awesome - Being Parted Out
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11-04-2003, 02:31 PM
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Location: Tucson AZ USA
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You will lose coolant. How much depends on how fast your are.
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Bob S. former owner of a 1984 silver 944 |
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11-04-2003, 05:49 PM
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Just thinking out loud
Join Date: Nov 2001
Location: Close by
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ds475, I'm just going to change it out. The reference I made about the multimeter and test light was an offer (which I didn't clearly state, my bad) to the fact that you are welcome to use mine if you ever wanted or need one. There are few here that live in Austin, I'm always willing to help out a fellow pelicanhead.
 Now about those , go to autozone and by the Bosch arms and blades, they are only about $9, and work well.
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11-05-2003, 07:38 AM
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Matt, i didn't realize you were in Austin! that's cool, i've met a guy off here from Austin (Keith Lawlor) i don't remember his Pelican user name though... I'm David btw... i'll PM you sometime... i appreciate the offer!!! thanks!
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'82 928S '85.0 944 Not Awesome - Being Parted Out
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11-06-2003, 08:15 AM
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what does "btw" mean
it's easy enuff to drain/add coolant. i think i paid about $17 for a porsche sending unit/+shipping and would have been able to get the cheaper one locally and not had to pay shipping but didn't know about it at the time. ain't hindsite always 20/20.
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87 951, K27/6, Almond Beige, 17" Turbotwist 87 944S, alpine white, 5sp died a violent death 84 944, silver/brown, auto, gone but not forgotten "may the force be with you" |
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11-06-2003, 08:36 AM
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BTW = By The Way
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'82 928S '85.0 944 Not Awesome - Being Parted Out
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11-06-2003, 08:45 AM
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ds475, thank you.
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87 951, K27/6, Almond Beige, 17" Turbotwist 87 944S, alpine white, 5sp died a violent death 84 944, silver/brown, auto, gone but not forgotten "may the force be with you" |
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11-06-2003, 03:47 PM
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what if i tilt my car forward by jacking up the ass? that way the coolant will go to the front, rather than the back.
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'82 928S '85.0 944 Not Awesome - Being Parted Out
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11-06-2003, 05:48 PM
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you're going to lose some fluid no matter how you do it.
you also have a drain on the bottom of the radiator on the left side
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87 951, K27/6, Almond Beige, 17" Turbotwist 87 944S, alpine white, 5sp died a violent death 84 944, silver/brown, auto, gone but not forgotten "may the force be with you" |
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11-06-2003, 05:53 PM
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well, would i lose so much that i would have to add some, or is it going to flow out fast? dammit... maybe i should just empty it, and put some fresh stuff in...
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'82 928S '85.0 944 Not Awesome - Being Parted Out
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11-06-2003, 06:00 PM
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if it's been over two years, a good idea.
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87 951, K27/6, Almond Beige, 17" Turbotwist 87 944S, alpine white, 5sp died a violent death 84 944, silver/brown, auto, gone but not forgotten "may the force be with you" |
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11-06-2003, 06:04 PM
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1983 Porsche 944 2.5 liter
