1996 Isuzu Oasis Fuse CB-3

Tiny
JONATHAN AXSEN
  • MEMBER
  • 1996 ISUZU OASIS
  • 30,000 MILES
The fuse located in the CB-3 slot keeps blowing and in turn killing the engine. It seems to happen when I make left hand turns, make a dipping motion, or go over speed bump. I know I must have short or two wires must be arcing out but the fuse panel only says "engine device". What does this fuse actually control and where should I start looking to diagnose the problem.
Monday, September 23rd, 2013 AT 7:51 AM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 34,330 POSTS
A simple trick to finding a short is to replace the blown fuse with a pair of spade terminals, then use small jumper wires to connect them to a 12 volt light bulb. A brake light bulb works well. When the circuit is live and the short is present, the bulb will be full brightness and hot so be sure it's not laying on the carpet or against a plastic door panel. Now you can unplug electrical connectors and move things around to see what makes the short go away. When it does, the bulb will get dim or go out.
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Monday, September 23rd, 2013 AT 1:06 PM

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