Blows ignition fuse as soon as I turn the key

Tiny
DUSTIN MOORE
  • MEMBER
  • 2005 SATURN VUE
  • 4 CYL
  • 2WD
  • MANUAL
  • 200,000 MILES
Blows ignition fuse as soon as I turn the key. Changed it five times and does it every time. Never had any problems until today.
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Thursday, February 1st, 2018 AT 3:47 PM

11 Replies

Tiny
PATENTED_REPAIR_PRO
  • EXPERT
Does the fuse blow when you turn the key to run, acc or start any any combination of those positions?
There are quite a few fuses the ignition switch feeds, so instead of replacing the fuses so may times, I recommend either just removing all of these fuses then put them back in one at a time until the fuse blows, or just stick an ammeter into that fuse socket and get a reading then see pulling which fuse allows the ammeter to drop safely well below 30 amps and probably closer to 5 amps.
These are the fuses when the key is on acc, in the I/P fuse block, turn, radio and BCM and those also are hot with the key on run. Then there is with the key on run, the htd seats, HVAC fuse and the HVAC relay, so remove the relay like you would remove a fuse.
Then also with the key on run, there are the in the I/P fuse block under the center of dash, a headlamp relay, ign1 fuse, cruise, eps, air bag and bcm (ign) fuse.
Then an A/C clutch relay, ignition injectors fuse, for lamp relay, back-up fuse, rear defog relay, abs fuse and power-train fuse.
Then with the key on start, there is the clutch start switch.
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Thursday, February 1st, 2018 AT 4:27 PM
Tiny
DUSTIN MOORE
  • MEMBER
It blows when the switch is on acc.
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Thursday, February 1st, 2018 AT 4:42 PM
Tiny
DUSTIN MOORE
  • MEMBER
Never makes it past acc.
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Thursday, February 1st, 2018 AT 4:42 PM
Tiny
PATENTED_REPAIR_PRO
  • EXPERT
You know of course acc is backwards, so are you sure you do not mean run?
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Thursday, February 1st, 2018 AT 4:43 PM
Tiny
DUSTIN MOORE
  • MEMBER
Acc I forward on my car it does not go backwards.
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Thursday, February 1st, 2018 AT 6:16 PM
Tiny
PATENTED_REPAIR_PRO
  • EXPERT
Well then there are only three things that are hot in acc, turn fuse, radio and BCM, so remove those three fuses and see if the fuse still blows. If not, put them back in one at a time.
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Thursday, February 1st, 2018 AT 6:21 PM
Tiny
DUSTIN MOORE
  • MEMBER
Okay, thanks I will give it a try tomorrow.
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Thursday, February 1st, 2018 AT 6:23 PM
Tiny
PATENTED_REPAIR_PRO
  • EXPERT
Okay, let me know which fuse allows the fuse not to blow.
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Thursday, February 1st, 2018 AT 6:36 PM
Tiny
DUSTIN MOORE
  • MEMBER
It blows as soon as I turn the key I am not even trying to start it.
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Friday, February 2nd, 2018 AT 12:59 PM
Tiny
DUSTIN MOORE
  • MEMBER
I was wrong about it blowing on a acc.
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Friday, February 2nd, 2018 AT 1:00 PM
Tiny
PATENTED_REPAIR_PRO
  • EXPERT
So, the fuse blows when you turn it to run?
Remove all those fuses and relays I said before and then see if the fuse still blows as soon as you turn it to run. If not, put them back in one at a time and then let me know which fuse or relay causes that fuse to blow.
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Friday, February 2nd, 2018 AT 1:02 PM

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