Ecm1 fuse

Asked by TimmyCarroll Sep 21, 2018 at 09:30 PM about the 1994 Chevrolet Blazer

Question type: Maintenance & Repair

My ecm1 fuse keeps blowing in my 1994 s10
blazer. I've already changed the fuel pump and oil
pressure switch. And it got me to work then
popped the fuse again on my way back from lunch.
It is pre obd2 and I don't have a scan tool that will
hook up to it. I was told It could be the pcm going
bad but don't want to throw any more money at
things that won't fix my problem. What my next
move?

3 Answers
9,540

Mike answered 5 years ago

Not pcm. You need to look at a wiring diagram (check your local library) to see what else is on that circuit. In the meantime try replacing the fuse with a circuit breaker of the same amperage rating if it starts to kick feel for warm wires especially the fuel pump wires.

Mark helpful

TimmyCarroll answered 5 years ago

I found a short in a power wire going to the vac filter. Isolated the wire and it fired up. I haven't test taken it on a test drive yet due to beer lol. But I think my problem by the grace of god just might be fixed.

Mark helpful

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