ECM-I 20A blown

[Ol'Rover]

What would cause the ECM-I Fuse to keep blowing? Everytime i turn the ignition to the Start position the fuse blows. What should i be looking for and where should i begin?

Causes the fuel pump to not turn on, and no spark.

 

[97c1500]

Shorted wire?

 

[Mike]

Trace the wires that go to and from that fuse. Sucks but that is your only option. Thoroughly look through your entire truck for burnt or rubbed through wires.

 

[Ol'Rover]

We're starting to think it has something to do with my ECM...

 

[Mike]

try switching the ecm then

 

[daddy_dandy]

Could be a number of things. http://www.pswired.com/misc/pacaudio/syswire.pdf

That will help you get started.

 

[Ol'Rover]

FIXED!

Wire rubbed through on the passenger exhaust manifold, And shorted out the crank position sensor. (Shorted wire) 3 hour find & fix.

 

[daddy_dandy]

Nice! I've been there before. Check out what a power steering leak did for me.

You must be registered for see images attach

Yup, those are bare wires showing going into the crank position sensor pigtail.

 

[Ol'Rover]

wholey crap.