Injector fuse keeps blowing

Tiny
KENNET RAY
  • MEMBER
  • 2008 CHEVROLET COBALT
  • 1.2L
  • 4 CYL
  • 195,000 MILES
Every time I try to crank the car it blows the injector fuse.
Friday, April 17th, 2020 AT 1:56 PM

3 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
This fuse is a little misleading. Not only does it feed the injectors but it fees the coils as well. More then likely this is a coil causing this issue and not an injector. An injector is just a solenoid that opens and closes but the coil takes low voltage and make high voltage on the secondary side.

Due to this, the easiest way to test it is get a bunch of fuses and unplug all the coils and crank the engine. If the fuse doesn't blow, plug them back in one at a time and crank the engine until it blows. Clearly once you get two coils plugged back in, it may start but just shut it off as soon as it does.

If you unplug all the coils and it still blows, plug them all back in and do the same thing to the injectors.

Let me know if you have questions.
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Friday, April 17th, 2020 AT 2:14 PM
Tiny
KENNETH SANDERS
  • MEMBER
  • 3 POSTS
  • 2008 CHEVROLET COBALT
  • 0.5L
  • 4 CYL
  • 195,000 MILES
Every time I try to crank the car it blows the injector fuse.
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Tuesday, April 21st, 2020 AT 12:08 PM (Merged)
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
I just answered this question a few days ago for someone else. See the link to the other question. This fuse feeds the injectors and coils so I would suggest unplugging the coils and see if it blows when cranking leaving the injectors plugged in. If not, then plug them back in one at a time and crank the engine until it blows. Then replace that coil and retest.

https://www.2carpros.com/questions/injectors-fuse-keeps-blowing-40653466

Let me know if you have questions.
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Tuesday, April 21st, 2020 AT 12:08 PM (Merged)

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