n14 keeps blowing fuse next to ecm

OK, OK, OK. Gee didn't mean to twist your tail there. Sheesh.

Maybe you need to reboot?

 

Fluids do not let fuse blow!!! Engine protection issues let engine run for some seconds and engine stalls.

I'm sure it is bad negative wiring issue, may be in complex with bad starter with short coils.

Disconnect ECM power connector and engine interface wiring and look for bad connection. After you try to star and starting fails bad connection points are warm ore hot.

Use headlamp bulbs to check wiring under load and look for voltage drop point with V-meter.

Do not change fuses before wiring issue are solved. You'll get ECM with 111 code (internal damage) ore dead ECM.

 

I would suggest getting a testing light, turn the key on and touch the pointed end of the tester on the shell case of the starter and the clip to a ground, if the light comes on , you have an internal short, if not, can you put in a 20 amp or 15 amp fuse and see if that blows out,, Ive had starter problems like this and usually its a grounded case or a frayed wire touching somewhere on the frame.. good luck

 

if it isnt the fluids--maybe its worn tires--or bad fifth wheel

 

Or maybe the monkey wrench needs a bannana....

 

I tell you one more time - it is so good that designers add neg. wire ECM fuse. No this fuse on DAF engines, no this fuse on Iveco Cursor engiines.And I have collection of damaged inside units throught ground circuits. Looks bad inside!

 

Check the ground cables from starter to frame and from the frame to batteries. Actually remove them and clean them. They have a habit of corroding at the connection.

 

Have ever got you tk going? mine is doing almost the same thing

 

Well, first of all, the relay fuse to the ecm requires a 30amp (green) fuse, runs along the drivers side of N14 motor, if not starting and all connections are correct might want to replace if bad.