Heater/Climate Control Issues: '88 190e

I realize that, here at the beginning of summer this is irrelevant, but I plan to keep this car into the winter, so here's my problem:
The heat of my '88 190e 2.3 has a constant problem of shutting off
completely. When the temperature outside is over say, 65 degrees the system will blow only cool air no matter what the setting. However when the temp goes below this, as wittnessed last winter, and the system is set over 20 degrees C or so the blower will run for around 10 seconds and then the entire system will shut off, until the car is turned off and restarted.
I should note that the air works fine, and the dash vents work, but the floor vents work only rarely at best.
I have really not done any troubleshooting on this as I had two cars last winter, but the 190 is now my only one, and I would like to get a jump on this now while I have the time.
If you ave any ideas please respond to:
Germanstar1983"at"comcast"dot"net
Thanks,
Daniel
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
First of all. I suggest you look in the fusebox... take out the fuse that correspond to your climate control system, fans, etc. and throw it out. Put in the new fuse.
Before you throw it out... check the contacts to see if it is corroded. I bet it probably is.
The second culprit I think that can cause that problem of yours is the ignition switch... when ignition switch is bad, it will switch off your fan. Try this the next time it shuts off on you... just slightly turn your key a bit to the point where it would NOT shut your engine off... if the fan kicks on, then that is it. I hope you are not doing this while you are driving either... ya know...
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.