 fresh air fan bad resistor?, defrost fresh air |
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| Medtner3 |
 Jan 21 2022, 10:52 PM
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Member  Group: Members Posts: 180 Joined: 7-July 20 From: Cedar Park Member No.: 24,467 Region Association: None  |
update: well, the fan was working now not even that is working. I think I might have fried the motor when I was hooking up the leads to test the fan through the resistor prongs I accidentally let the pos and neg cross ... when it rains it pours not going well today
Edited: I took my fresh air box fan out of the car and tested with a 12 V battery and it spins and works. But the resistor does not seem to work: I put 12V positive lead on the upper right pole where power comes in ( I get 11.84 volts on this terminal when the ignition was on) . ... as I understand it the other three poles are ground for the three fan speeds? So I connect each one to ground and the fan does not work assuming I am testing correctly>>>> can you rebuild a resistor or perhaps clean it with contact cleaner and make it work again https://forums.pelicanparts.com/porsche-911...ower-motor.html https://forums.pelicanparts.com/porsche-914...roster-fan.html |
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| Superhawk996 |
Jan 23 2022, 10:33 AM
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914 Guru Group: Members Posts: 5,869 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch 
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Found the thread Drphil914 started.
Might have some info that will help you. Also has info on my motor (couldn't be fixed) and the URO replacment. Also don't forget while you're in there, 914Rubber sells new gaskets and seals, and hardware to completely rebuild the fresh air box if you're in need. http://www.914world.com/bbs2/index.php?sho...=351152&st= |
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| Medtner3 |
Jan 23 2022, 10:42 AM
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Member Group: Members Posts: 180 Joined: 7-July 20 From: Cedar Park Member No.: 24,467 Region Association: None |
QUOTE(Superhawk996 @ Jan 23 2022, 10:33 AM)  Found the thread Drphil914 started. Might have some info that will help you. Also has info on my motor (couldn't be fixed) and the URO replacment. Also don't forget while you're in there, 914Rubber sells new gaskets and seals, and hardware to completely rebuild the fresh air box if you're in need. http://www.914world.com/bbs2/index.php?sho...=351152&st= I got all that the only thing I need is the rubber grommet where the wires go into the fresh air housing. I will definitely check out that thread . Tested my motor again this am and it briefly worked but I smell burning plastic ... not good so jerked the wires off. I separated the motor from the fan which was very tricky used a hammer and punch and emory cloth around the impeller. Actually managed to remove the motor without breaking the fan. the part of the motor that touches the brushes looks terrible. sanded it a little and got it to spin for a few seconds then stops. Not wasting anymore time on this I am replacing the motor since does not really look rebuildable |
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Posts in this topic
Medtner3 fresh air fan bad resistor? Jan 21 2022, 10:52 PM
emerygt350
Need some advice before I put my gas tank back in... Jan 22 2022, 07:19 AM
Medtner3 I sprayed contact cleaner on the slider on top and... Jan 22 2022, 09:20 AM barefoot I'd pull the assembly out & look at the se... Jan 22 2022, 08:33 AM Medtner3
I'd pull the assembly out & look at the s... Jan 22 2022, 09:20 AM Medtner3 [quote name='Medtner3' date='Jan 21 20... Jan 22 2022, 02:41 PM Dustin Resistors don't tend to fail. When they fail t... Jan 22 2022, 05:30 PM Medtner3
Resistors don't tend to fail. If a resistor f... Jan 22 2022, 05:33 PM Superhawk996 Here is the pin out from the resistor
NOTE: di... Jan 22 2022, 07:10 PM Medtner3
Here is the pin out from the resistor
NOTE: d... Jan 22 2022, 08:38 PM Superhawk996
that is what I had the pin that says "groun... Jan 23 2022, 09:09 AM Medtner3
that is what I had the pin that says "grou... Jan 23 2022, 10:02 AM Medtner3
[quote name='Superhawk996' post='2976805' date='J... Jan 23 2022, 07:08 PM Dustin Did you ohm it out?
Ground is the right label fo... Jan 24 2022, 12:26 AM DRPHIL914
Found the thread Drphil914 started.
Might have... Jan 24 2022, 09:56 AM |
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