1992 Chevy Astro embc fuse

1992 CHEVROLET ASTRO

PAMELAKREST

MEMBER
2 POSTS

Electrical problem
1992 Chevy Astro 6 cyl Automatic

I have a 92 chevy astro van and it keeps blowing fuses and I have no clue what keeps making them blow. The most recent is something called the EMBC fuse. When I tried to put the new fuse it blows soon as it is inserted

Apr 5, 2009 at 7:20 AM

JDL

✓Experienced Mechanic
16,098 POSTS

Are you talking about the ecm B fuse? Sounds like a dead short to ground, that fuse circuit is live all the time. I'd have to trace the wiring circuit.

You can unplug everything on that circuit, hope for the best, but, if it is a bad wire somewhere, it will still blow the fuse. So you don't blow all your fuses, you can use a testlite across the fuse terminals, if the testlite comes on, the circuit is grounded, that is bad. You will have to unplug the constant voltage to the pcm. Also the fuel pump relay and the fuel pump o/p switch. If the lite still comes on, bad wire somewhere.

Apr 5, 2009 at 7:55 AM