Stephencs601

I am using my A/C yesterday, when the fan stops working. Now, it only works on the highest speed, A/C still blows cold. Any thoughts.

1987 is the year.

andys-944

I have the same issue on my 87, but its intermittent normaly starts to work again within a day its happened twice in the last year. Not much help I know.

pnbell

Fan Speed Resistor...

Had this problem on several other cars of mine... might even smell like burning sometimes...?

http://944time.com/porsche/944-fan-speed-resistor.php

Check this out ^

86 951 Driver

Drop that resistor into a cup of white vinegar. Leave it for at least 8 hours. Then let it dry for a while. Put it back in and it should work great.

Stephencs601

Why white vinegar.

max_boost951

White vinegar take the oxidation off electronics

86 951 Driver

Trust me it works. I have done it on 2 944's. If it doesn't fix it then your not out anything

gtroth

Vinegar works great. It's a weak acetic acid. White is cleanest.
You might stick some toothpicks in the contacts' arms to hold them open during the soak to get better exposure.

Stephencs601

ok I am sold

Stephencs601

Well I soaked the part in the Vinegar. I was not sure of this, but you all said it would work. Well it did and i have fan speeds again. Imagine, a simple solution that could have costs big bucks to fix. Thanks to you all for you input.