ECM

[Allthedogs1951]

My husband and I have driven over the road for some years. We recently bought a used 98 Pete 379. Drove two weeks and motor blew up. It now has a new motor in it and everything works except new ecm. No throttle and stop engine light stays
On. We bought a new one cost 1,200 dollars. With guarantee. So we sent it back to Colorado and they
Are going to
Check it out and send it back. In the meantime the mechanic put one one that a friend has but doesn’t want to see and everything works beautifully. Have you ever experienced anything like this. Need some brainstorming fast. Gotta get on the road. Please help with feedback. Thank you guys so much

 

[mndriver]

I’m aware of a Volvo that wouldn’t recognize the ECM.

it was a front wiring harness to fix that one.

 

[Allthedogs1951]

I’m aware of a Volvo that wouldn’t recognize the ECM.

it was a front wiring harness to fix that one.

Thank you so much.

 

[Allthedogs1951]

Thank you so much. Think it’s in the wiring too.

 

[Hammer166]

My husband and I have driven over the road for some years. We recently bought a used 98 Pete 379. Drove two weeks and motor blew up. It now has a new motor in it and everything works except new ecm. No throttle and stop engine light stays
On. We bought a new one cost 1,200 dollars. With guarantee. So we sent it back to Colorado and they
Are going to
Check it out and send it back. In the meantime the mechanic put one one that a friend has but doesn’t want to see and everything works beautifully. Have you ever experienced anything like this. Need some brainstorming fast. Gotta get on the road. Please help with feedback. Thank you guys so much

The fact the 2nd ECM works fine indicates wiring harness is likely okay.

I had an 07 Detroit that would quit running if the rpm exceeded 1600. Cycle the key and away it would go, it would run indefinitely so long as the rpm never got over 1600. It was the ECM, sometimes they do weird stuff.

 

[Allthedogs1951]

Thank you for your reply. You are right about the wiring harness.