"Stef Schrader" (stefschrader)
07/04/2017 at 22:53 • Filed to: Bosch'd, Porschelump, overheating, dead fans, Porsche 944, Porsche, 944
3
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"Stef Schrader" (stefschrader)
07/04/2017 at 22:53 • Filed to: Bosch'd, Porschelump, overheating, dead fans, Porsche 944, Porsche, 944 | 3
| 28 |
I did have only one fan not working on the 944. No big deal—it did the job unless I had to be stopped for a long time somewhere. Now I have two fans that don’t work. Both fans. All the fans on the car.
I have started a
!!!error: Indecipherable SUB-paragraph formatting!!!
. Super mad. Very mad. Grr. At least there’s a troubleshooting page already on
!!!error: Indecipherable SUB-paragraph formatting!!!
, but still: grr.
Arch Duke Maxyenko, Shit Talk Extraordinaire
> Stef Schrader
07/04/2017 at 22:57 |
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Total fan replacement surgery
DrJohannVegas
> Stef Schrader
07/04/2017 at 23:03 |
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That blows.
Oh, wait. No. The opposite of that.
MM54
> Stef Schrader
07/04/2017 at 23:03 |
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Having read your help thread, I think your clutch hydraulics have been possessed by a malicious spirit. You might be able to bleed it out, but who knows.
As for the fans, first things first - are they getting power when they should? If so, time for new fans, if not, move one element back - is the relay good? Try jumpering it and see if the fan runs. If not, move one element back - is the temp switch closing when it should? Etc.
TheTurbochargedSquirrel
> Stef Schrader
07/04/2017 at 23:06 |
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It’s a race car, just hardwire them up to a switch on the dash.
deprecated account
> Stef Schrader
07/04/2017 at 23:07 |
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Push me to the edge, all my fans are dead
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Stef Schrader
> TheTurbochargedSquirrel
07/04/2017 at 23:13 |
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This is what I wanna do (or do the whole “fan override switch” thing), but grumble. I hate having just a carport because there’s nowhere for me to work on electrical crap, so it’s all completely foreign to me.
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Stef Schrader
> MM54
07/04/2017 at 23:15 |
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Pretty sure there’s either a bubble in the system (plausible; fluid’s looking gross and old now and needs a swap) or I need to swap master/slave cylinders for the clutch. Grumble.
This is going to sound extra dumb, but how do I jump the fans? I don’t have electricity out where I usually work on the car (it’s a carport) so is there a tool that’ll hook up to the little plugs nicely?
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Stef Schrader
> DrJohannVegas
07/04/2017 at 23:16 |
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$%#^$^!%
Highlander-Datsuns are Forever
> Stef Schrader
07/04/2017 at 23:19 |
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12 volts plus battery amps to fans could be more than they are rated for.
Birddog
> Stef Schrader
07/04/2017 at 23:19 |
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Find the relay(s) and test for power. If you’re still running stock electrics you may just have a bad relay. You can jump them out at the plug to test the fans there too.
Urambo Tauro
> Stef Schrader
07/04/2017 at 23:19 |
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Uh-oh. As if gallons and gallons of butt sweat wasn’t bad enough... last thing you need now is gallons of engine block sweat!
aberson Bresident of the FullyAssed Committe
> Stef Schrader
07/04/2017 at 23:21 |
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It must be stagnating pretty bad huh
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Urambo Tauro
> Stef Schrader
07/04/2017 at 23:29 |
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You can jump the fans straight from the battery with some jumper wires. Don’t worry about finding a fancy connector that will plug right in; just poke the terminals with paperclips (or T-pins, my favorite) to make your connections and see how the fan reacts to having a direct supply of power.
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TheTurbochargedSquirrel
> Highlander-Datsuns are Forever
07/04/2017 at 23:32 |
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The fans are rated at 12V and will draw whatever current they need. Current is determined by the load, not the source (though the source does have a maximum total current limit)
notsomethingstructural
> Stef Schrader
07/04/2017 at 23:53 |
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Jump the fans. If they run, then yeah just pull them to a switch and/or relay in the dash. If you know the routing of the wire channels it should be pretty quick and painless, even for a carport. Milwaukee has a battery powered soldering iron that’s either out or coming out, you’ve got no excuses after that.
It’s super straightforward at its most basic but you can make it do some cool stuff like only run off the ignition circuit and integrate a capacitor to keep the relay closed after you shut the car off. But you gotta find out if the fans work first.
DC3 LS, will be perpetually replacing cars until the end of time
> Stef Schrader
07/05/2017 at 00:09 |
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It’s a PARSCH, it doesn’t even need a radiator. No radiator, no need for fans!
You’ll just have to keep it above 65mph
all
the time to get enough air flow over the engine :)
ITA97, now with more Jag @ opposite-lock.com
> Stef Schrader
07/05/2017 at 00:32 |
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Other suggestions for using a piece of wire (or even a paperclip in some cases) as a jumper to test you fans will work just fine. For future electrical troubleshooting, you might look into getting a good circuit tester. A Power probe will be the best money you’ll ever spend on a tool for electrical troubleshooting . It changed my life for the better when I got one.
My bird IS the word
> Stef Schrader
07/05/2017 at 01:24 |
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On the fans: I had a relay go bad on my 944. Replacing that fixed it. I had an 86 though, yours may be different: http://www.clarks-garage.com/shop-manual/cool-01.htm
It’s scary how much maintenance info is available for these.
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Stef Schrader
> notsomethingstructural
07/05/2017 at 03:38 |
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Oooooh I need that battery-powered soldering iron.
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Stef Schrader
> My bird IS the word
07/05/2017 at 03:39 |
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parsh FTW
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Stef Schrader
> DC3 LS, will be perpetually replacing cars until the end of time
07/05/2017 at 03:39 |
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That’s what’s so baffling! I was on the freeway when it got ultra-hot. Usually moving along at freeway speeds is when it’s the happiest, fan or no fan.
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Stef Schrader
> deprecated account
07/05/2017 at 03:46 |
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Clearly, what my car needs is a group of dancing cybergoths.
random001
> Stef Schrader
07/05/2017 at 07:03 |
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But Stef, who is your biggest fan?
shop-teacher
> Stef Schrader
07/05/2017 at 07:23 |
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I’ve got one. Not the Milwaukee, but some other brand. It works great. I still always burn the crap out of my finger tips, but that’s because I’m an idiot with big fat fingers.
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deprecated account
> Stef Schrader
07/05/2017 at 10:24 |
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kek
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Stef Schrader
> random001
07/05/2017 at 13:22 |
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I measured yesterday. About 11 inches in diameter.
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random001
> Stef Schrader
07/05/2017 at 13:47 |
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Jokes for days.
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MM54
> Stef Schrader
07/05/2017 at 17:32 |
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12V from the battery will do it, with something like a fan though you’ll want to avoid a paperclip though as the fan probably will pull more current than a paperclip will readily handle. Any sort of wire to jump from the battery to the fan plugs will do as long as it’s, say 12ga or heavier to be safe. If you’re quick about it you can probably go pretty small, but I don’t want you getting a paperclip-shape burned into your fingerprints...
Heck, the more I think about it, you could probably put one end of a set of jumper cables on the battery and clamp a nail or something on the other end and stick that into the plug pretty readily, just make sure the positive side doesn’t touch anything else.