2003 Pontiac Sunfire Injector Fuse Blows

2003 PONTIAC SUNFIRE
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KELLY69
  • MEMBER
  • 1 POST
my 2003 sunfire keeps blowing the 15amp injector fuse when i try to start it. I had it serviced and no problems wher detected. After service it ran ok for about a week then blew the fuse again, and now it blows each time I try to start it.
Dec 10, 2006 at 5:43 AM
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GARFIELD
  • ✓Experienced Mechanic
  • 197 POSTS
It sounds like you have a ground either in the wiring or in the injectors may be grounding. For a fuse to blow indicates a ground, it is protecting the wiring from a meltdown.
Dec 12, 2006 at 9:19 PM
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Suggested Repair

Inspect the injector wiring and the fuel injectors for a short to ground, which is blowing the 15-amp injector fuse and protecting the circuit from overheating.

Conversation Summary

The owner of a 2003 Pontiac Sunfire says the 15-amp injector fuse blows whenever the car is started. It ran fine for about a week after service, then the fuse began blowing again. The expert says a blown fuse indicates a short to ground in the injector wiring or the injectors themselves.

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