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73-87 Chevy _ GMC Trucks => Electrical => Topic started by: Yellowcat on August 05, 2025, 02:26:16 pm

Title: ECM 1 fuse blowing 1987 chevy
Post by: Yellowcat on August 05, 2025, 02:26:16 pm

Have a 1987 chevy tbi 350 which was blowing the  ECM 1 fuse soon as I turned ignition key on. It done it a few times but now I driving it for a week an nout blowing fues.  What components are running on this one ECM 1 fuse? I need to trace all these wires going out from the ECM 1 fuse?

Title: Re: ECM 1 fuse blowing 1987 chevy
Post by: Yellowcat on August 05, 2025, 02:44:16 pm

photo of fuse box

Title: Re: ECM 1 fuse blowing 1987 chevy
Post by: VileZambonie on August 06, 2025, 08:25:45 pm

Does it have an AIR pump? EGR Solenoid or EGR Vacuum Regulator? Not enough info on you truck but see the attached.