Ignition Key Fuse Keeps Blowing
#1
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!
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!
#4
#6
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!
#7
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
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
#8
I have this problem as well, I start hunting using the wiring diagram and it's my Black wire with Yellow. I tested it at Keyless Control Mod by unplugging it and ground the wire and it seems to be the culprit. Is there a fuse for it so I don't have to go down the entire wire? Im not the best at reading wiring diagrams so any help would be appreciated.
#10
So what it ended up being was that I had a short in the Black wire with the yellow stripe. As I was going down the list I thought about the reverse lights and how I had just put the tranny back in. It ended up being that the tranny cable was pinched between the bell housing and engine. When I pulled it out, sure enough, the only wire that was damaged was a black wire with a yellow stripe. Everything is back to normal.
The following users liked this post:
Cosmo Canuck (12-02-2019)
#11
So what it ended up being was that I had a short in the Black wire with the yellow stripe. As I was going down the list I thought about the reverse lights and how I had just put the tranny back in. It ended up being that the tranny cable was pinched between the bell housing and engine. When I pulled it out, sure enough, the only wire that was damaged was a black wire with a yellow stripe. Everything is back to normal.
#12
check the downstream 02 sensor pigtail on the right side of the tranny. I had a fuse under the hood that kept blowing and would kill my car cause the melted wiring was grounding itself on the trans, after I replaced my clutch. the downstream 02 is on the same circuit as one of either the fuel or ignition circuits. I cant remember exactly which one but I know that's a common problem that no one can seem to figure out
The following users liked this post:
Cosmo Canuck (01-17-2020)
#13
If it dies instantly then it’s hooked to spark/ignition. If it sputters and engine power drops off before it dies then fuel because the pressure accumulator and fuel filter will hold just enough pressure to run those few seconds longer.
I had a similar problem in a different brand vehicle.
I had a similar problem in a different brand vehicle.
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