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Ignition Key Fuse Keeps Blowing

Old 07-20-2015, 05:19 PM
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AZ Ignition Key Fuse Keeps Blowing

Hi, I have an '04 8, yesterday I was driving and I was going about 60 mph when all of the sudden my car just shut off. I tried popping the clutch twice while still going to start it, and then tried turning the key and neither worked. I pulled over and after about 30 min of looking for the problem, I found that the Ignition Key 15 amp fuse was blown. I replaced it with another, tried to start the car, and nothing. Checked the fuse again... blown. I did this 2 more times with the same result. I replaced it with a 20 amp fuse so I could at least roll up my windows. I noticed that with the blown fuse, the power windows didn't work, but the interior lights worked. I know that this means that there is a short in the circuit somewhere, but does anyone know where I should look more specifically?

Background on the car: 2004 6-speed, 109,850 miles on the car, and about 74k on the engine. I don't know when or if the coils/plugs/cables were replaced, as I've only had the car for about 2.5K miles. I did just replace the transmission with a used one with low mileage, and the clutch and flywheel. Would the starter have anything to do with it possibly? Any help appreciated!
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Old 06-20-2016, 05:02 PM
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Bump. Having a similar issue
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Old 06-20-2016, 05:11 PM
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My problem

My problem ended up being transmission relays and some melted wiring
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Old 08-21-2016, 11:19 AM
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Testing?

Originally Posted by delicious_dallan View Post
My problem ended up being transmission relays and some melted wiring
how did you find out it was the transmission relays, where are they located, how much do they cost?
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Old 08-21-2016, 04:44 PM
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Originally Posted by delicious_dallan View Post
My problem ended up being transmission relays and some melted wiring
Transmission relays?
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Old 11-10-2016, 07:21 AM
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I too have a 2004 Rx8 manual trans, while driving made a left turn and the car died! check fuse box and found ignition fuse (15a) blown. checked connection replaced battery. blows fuse when key is in on position..WTF!
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Old 11-10-2016, 06:38 PM
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Looking at the Schematic....there is a lot of stuff fed from that one fuse. Your choice as to which system to disconnect first. I'd go by easiest to access .. .you will need a lot of fuses!
From term. 101 on the most likely "on" section of ign. switch:
1 Ign. Relay (B/Y= colour of all these wires)
2 Keyless control Module &...
EC-AT Control
Illumination Light
Dimmer Mirror
Power Windows (w/o DRL)
3 Inst. Cluster &
tire Press. Monitor
Headlight Leveling
Daytime Running Light (DRL)
turn/Hazard Lights
Backup Lights

Good luck with your trouble-shooting. Let us know what you find
Good Luck
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