We have had some issues with the radio shutting down in the past but it
always comes back on. Then on sunday we were on our way back from cali
and I jumped a bump a bump nothing seemed to happen -why would it this
is an suv right? Then about an hour later the radio (which is stock)
shut down, then the int lights stopped working, then when we took the
keys out the car still dings. so we checked the fuses and the relays
the int fuse was blown and when we replace it it pops instantly. The
relays are fine except the int relay is making a clicking noise when
you turn the headlights on. So I drove the car to the store and it ran
fine (just no radio or int lights) the next morning when I went to go
to work it wouldn't start!!! What has happened to my car? suggestions I
have heard is that it's the voltage regulator or altenator or a plug
has came unplugged. PLEASE HELP ME!!!
Since the dome light is always hot, I would think some thing is shorted in
that circuit. It could also cause the dead battery. Your going to need a
wiring diagram. Since the radio was crapping out I would disconnect it &
see if the fuse still blows. Or the radio could have been quitting because
of the short ??? Have to start somewhere!
okay so my interior is in a million pieces we have unplugged everything
and it is still popping the int fuse I agree about the dome light we'll
check that after work today thanks for the help any other ideas??
If you are able use a digital multimeter ($5-$8 from harbor freight) try
measuring the resistance (with the battery disconnected) from the fuse connector
to the frame and see if it is a true "short" (approx. 1-5 ohms) or a higher
value. Then compare that reading with the resistance from the dome light to the
frame, the reading in ohms that is LOWER should be closer to where the actual
short is at in the harness. If they are about the same, and are a very low
value there should be something obvious in that part of the harness or one of
the harness connectors touching the frame. Make sure your meter has a fresh
battery to prevent inaccurate readings. How long does it take to blow the fuse,
instantly or does it take a few seconds? I often use a straight pin soldered to
one of the meter leads to pierce the insulation of suspect wiring without
damaging it permanently, the lower the resistance to the frame, the closer to
the short you are and conversely, if the resistance is going up as you check
the distribution from the fuse you are going away from the short, of course.
good luck, Joe.
I made a tool to troubleshoot this type of problem.
Crimp a spade connector to a length of red wire (about 12")
Make another with black wire.
Insert each into the fust position for each blade of the fuse.
use a 12v light connected to the wires.
I use a 12v drop light I have with alligator clips.
The light will glow bright as long as the circuit is shorted.
When you disconnect something and the light dims or goes out,
you found your short!
I used this on a Trans Am once that had a short in the dome light
circuit that we ended up finding the problem had been created at the
factory, but didn't show up until years later. The factory had pinched
the trunk light wiring under a deck spoiler attaching nut.
After several years, if finally rubbed thru the insulation and shorted
nicely to ground!
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