What the hell....my 1990TE was working and running perfectly...all the sudden...no A/C, no vent, no nothing....zippo....no air movement at all. It is like the entire ventilation system has shut down. The A/C compressor is NOT engaging...the fan is NOT turning....no air, fresh or otherwise, coming through. I have never driven inside an oven before...now i know what it is like. Temps here have been 100 all week...and it will continue like this till October.

No matter what button....nothing...just dead. Turn the temp dial....nothing....just dead.

Is there a particular fusible link or fuse that could cause the entire thing to go down?

If one thing happens like the A/C compressor fusible link burning out...would that cause the fan to stop working in vent mode?

PLEASE PLEASE SUGGESTIONS? ALL FUSES SEEM FINE, BUT I WILL MULTIMETER JUST IN CASE

__________________
1990 300TE....all comments are about this car...in case I forget in the actual post

I just read this great post over at diesel 100% Climate Control Failure: Vacuum, Electrical, or Both?

This guy said his ACC caused this same problem. I will give his fix a shot

__________________
1990 300TE....all comments are about this car...in case I forget in the actual post

Funny stuff....I am finding once again...that as I ask questions...in my persuit to give you guys more info...I stumble upon the solution. This time is no exception....I blew that inline fuse(F15), which is the blower motor fuse. Did not even know it was there...and in the daytime, I completely missed it. I went out at 2am with a flashlight to check for something else...and there was the inline fuse, right in front of the fuse box, partially melted. You can see the strip inside is broken.

Now the hard questions.....

What caused this?
Is this particular fuse known to blow even when there is no short in the system?
Can I replace it with a breaker type of fuse?

And anything else you might add

__________________
1990 300TE....all comments are about this car...in case I forget in the actual post

Saint, replace the 30 amp strip fuse and you should be good to go. I had a similar situation to yours with our 1991 300CE a month ago, but the fuse wasn't melted, just cracked in half. I replaced the strip fuse and everything was back to normal. You can buy the strip fuse online for less than a dollar. Do a search under "Body Electrical" at one of the websites.

__________________
Fred Hoelzle

Yes, this site has been frequented and responded to by some of the best MB techs anywhere for over five years. For that reason there is LOTS of good information available by simply doing a search.

Good luck,

Ferdman....my manual shows this to be a 30amp fuse. The strip is broken, but the outer black plastic enclosure melted right in the middle so you can look inside and see the strip is broken. The strip has a 30 stamped on it. This cable is THICK. It has to be about 8 gage wire, or maybe 10....all this leads me to believe that it is in fact a 30 amp. Where did you get 15 amp from...and do you think I have this wrong?

UPDATE...Because it was late when I checked it last night...I did not give it GOOD going over. I just went out there and popped the melted lid, removed the broken strip...and am looking at it now. Yep, says 30a on it...right where it broke. Problem solved there....now where to buy these where I am not paying more for shipping than for the item itself...lol.

Larry....I ALWAYS search first...but as we have all found out...searching is a whole lot of miss. Just about every problem and answers have been posted at one time or another, but sometimes(most of the time )...it is like a needle in a haystack trying to ferret it out of there. I have so many threads bookmarked right now...lol....I could write a book. And...most of my bookmarked threads have come from searching for something else, and some unrelated thread will pop up having my keyword in it...and the thread being pretty darn interesting for another time.

I love this site. The best MB forum, and really the only one I frequent anymore. Wish I could be more of a contributor...but I am still a MB newbie bout 2 years now.

Thanks guys

__________________
1990 300TE....all comments are about this car...in case I forget in the actual post

Don't be afraid... try a Dealership, especially if one is close or on the way... Most maintenance parts parts like fuses, light bulbs, antifreeze, wiper blades, are usually price competitive. Check them out.

Best Regards,
Jim