The car only has 125K miles on it, but I anything can happen in a car this old. You should see my service log!

Thanks a lot for the help it gives me some things to look at.

All the other electrical stuff seems to be working.
Does the 30A fuse power anything other than that blower fan?

I will take a bunch of pictures and post them here.

__________________
1991 350SD (updated rods)
Biodiesel B100 when I can find it.
Dino when really cold outside

Just the blower motor.

__________________
1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

Does anyone have a picture of the 30A fuse for the blower?

Where do I get one?

__________________
1991 350SD (updated rods)
Biodiesel B100 when I can find it.
Dino when really cold outside

Here it is, mounted on the shock tower, between the shock absorber and the fender. You can get them from FastLane (click "Buy Parts" at the top of the page; they support this forum) or almost any 124 in an auto junkyard or from a dealer.

NOTE: The fuse is physically the same as the 80 Amp fuse in the preglow relay so don't confuse them. The blower takes a 30 Amp fuse; it will have "30A" stamped into the aluminum.

NOTE: The fuse is purchased separately.

Jeremy

__________________

"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

I found the 30A bare metal fuse online for $2. Is the fuse a common item that you can get at the auto parts store?

What causes he fuse to blow?

Is there a short somewhere?

__________________
1991 350SD (updated rods)
Biodiesel B100 when I can find it.
Dino when really cold outside

It probably depends on the store. I would think most could order it. The MB dealer should have it in stock.

Was it melted or cracked? If the motor seized up that would probably cause it to melt. Most of the strip fuse failures I've seen or read about were cracked from age and not from a fault with the motor.

There was an issue with the fuse box melting where the blower fuse was located. MB moved the fuse to the box outside the fuse box like it is in your car.

The brushes on the blower motors eventually wear, but usually give you a warning and don't just stop.

__________________
1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

Here are some pictures of the fuse and the little box it is in.

The fuse looks like it might have been corroded, but then heated up for a long time and burned through. The plastic box had a hole melted in the bottom of it.

Should I check the blower to see if it is seized-up by bypassing the fuse for a second to see if the blower turns?

I found the plastic box and wires online for about $45, but I think I am just going to plug the melted hole with some epoxy putty.

Attached Thumbnails

   

__________________
1991 350SD (updated rods)
Biodiesel B100 when I can find it.
Dino when really cold outside