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  #1  
Old 08-22-2021, 03:04 PM
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Join Date: Sep 2017
Location: O'Fallon, IL
Posts: 63
1987 300TD (w124) electrical gremlin

Hey gang. My oil pressure gauge, fuel gauge, and engine temp gauge are all inoperable and I can hear a faint buzzer from behind the dash. Also, the #5 fuse keeps blowing.

Any ideas? The car is a 1987 300TDT and I’m about to make a long trip.

Many thanks,

Corvo Gold
1987 300TD, converted to manual

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  #2  
Old 09-22-2021, 07:48 PM
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Join Date: Sep 2004
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Check your ground situation.
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2010 CL550 - Heaven help me but it's beautiful
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08 E350 4matic, Love it.
99 E320 too rusted, sold
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  #3  
Old 09-23-2021, 12:59 AM
Benzguy300
 
Join Date: Dec 2006
Location: Fontana Ca
Posts: 1,575
5 speed manual transmission

I’m sorry wrong thread

Last edited by benzguy300; 09-23-2021 at 01:01 AM. Reason: Error
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  #4  
Old 09-23-2021, 06:48 AM
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Join Date: Feb 2003
Posts: 278
This happened to me and when I searched, a lot of resolutions came from checking the fuse panels and replacing or reseating the fuses related to the cluster. I did this and that fixed it so far.
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  #5  
Old 09-23-2021, 07:05 AM
ykobayashi's Avatar
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Join Date: Jun 2005
Location: Irvine, CA
Posts: 1,264
The fuse blowing sounds like a short. You need the wiring diagram for your car and see what fuse 5 feeds. Once you know that, connect a 12v bulb across fuse 5. It should turn on because there is a short. Now start un plugging the items on the fuse 5 circuit one at a time till the light goes out. If you’re lucky you will find what is consuming all the electricity.

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