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  #1  
Old 03-22-2009, 12:26 PM
MPH MPH is offline
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Question 1991 350SDL metal fuse

The fuse that is located on the rear of the front bulkhead is a metal fuse in a holder (driver's side). It has 2 phillips screws holding wires on each end. Does that fuse control the climate control blower fans? The fuse is broken in the middle. Any help is appreciated.

Last edited by MPH; 03-22-2009 at 01:12 PM.
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  #2  
Old 03-22-2009, 02:37 PM
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That 30-amp strip fuse protects the climate control blower motor. It's typical that an older strip fuse will develop a hairline, transverse crack. Buy a new one online or at your local MB dealer for around $2.
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  #3  
Old 03-22-2009, 09:27 PM
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Yes, that's the fuse for the blower motor assembly. And yes it's around $2 from the Mercedes dealer but it's not a 30 amp, it's an 80 amp! It's more than a fuse, it's a power strip or something...just bought one prior to replacing the blower motor on my 1990.....
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Old 03-23-2009, 07:22 AM
MPH MPH is offline
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Thanks for the help guys! I will get one today.
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Old 03-23-2009, 11:18 AM
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To the best of my understanding, the CLIMATE CONTROL runs on a 30-amp fuse. The metal strip in the holder at the firewall should be a 30. 80 will, I believe, let the thing smoke itself.

The similar 80 amp "strip fuse" is used in the glow plug relay, not the climate system.
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"What could possibly go wrong?"

~Michael S.~ -
1986 M-B 300SDL, retired due to rust and electrical problems. Donated engine to:
1987 M-B 300SDL, odo dead. New project.
1982 M-B 240D, odo stopped at 308,000
1982 M-B 300SD, 175,000
1989 Dodge Ramcharger, 87,000 - 4wd, 318
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Old 03-23-2009, 12:31 PM
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90+ cars don't have a glow plug fuse

-J
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1991 350SDL. 230,000 miles (new motor @ 150,000).

2013 Fiat 500E. 20,000 miles, 80 miles at a time.
2012 Passat TDI. 95,000 miles. More space, power, and fuel economy than the Benz
2004 Touareg V10 TDI. 150,000 miles. One of 450.
1999 Jetta TDI. 310,000 miles.
1992 Jetta ECOdiesel. 156,000 miles. 1 of 48. Sold.
1991 Jetta ECOdiesel. 430,000 miles. 1 of 700. Sold to VeeDubTDI, totaled in front of our house
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Old 03-23-2009, 02:01 PM
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Quote:
Originally Posted by compu_85 View Post
90+ cars don't have a glow plug fuse

-J
Alright, that one was my mistake. I posted though, just to hopefully get clarification on the 30 vs 80 amp situation for the climate control. That's a significant different and I'd hate for them to get the wrong one.

My 30 amp information is from my 86 model.
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"What could possibly go wrong?"

~Michael S.~ -
1986 M-B 300SDL, retired due to rust and electrical problems. Donated engine to:
1987 M-B 300SDL, odo dead. New project.
1982 M-B 240D, odo stopped at 308,000
1982 M-B 300SD, 175,000
1989 Dodge Ramcharger, 87,000 - 4wd, 318
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