New here c15 ecm problems - TheDieselGarage.com
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post #1 of 1 (permalink) Old 03-16-2017, 07:44 PM Thread Starter
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New here c15 ecm problems

Hello !! I have a 97 peterbilt 379 with a c15 6nz that I recently bought from a friend of mine ... long story short one day he had engine bay power washed and truck stopped running found out ecm had a crack on bottom and must of got wet so he borrowed a ecm and truck ran until yesterday probably about six months has passed truck was driven everyday .. i bought truck running put it in my shop and he had to take ecm off and give back to original owner , so I said we'll put old ecm back on hopefully it dried out or didn't permanently damage anything inside it well it didn't work and neither did the one he took off he went and had both ecm bench tested and they said good on both I checked fuse that goes to battery and the pins that go to ecm that should have power and the grounds and they all check out !! Truck just cranks doesn't even try to start I'm stumped we've been trying to figure out what could of happened by just unplugging the ecm ?? Any ideas
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