Go Back  Offshoreonly.com > Technical > General Q & A
MEFI 1 ECM problems >

MEFI 1 ECM problems

Notices

MEFI 1 ECM problems

Old 04-26-2023 | 01:21 AM
  #1  
Thread Starter
Registered
 
Joined: May 2020
Posts: 54
Likes: 4
Default MEFI 1 ECM problems

Hi anyone know anything about MEFI1 ECMs? Could a short in mefi 1 cause the alarms to go off constantly and the switched ground from the ecm to the DLC connected to go dead? The brown and white wire.
but the engine still starts and runs? Or am I looking at a fault elsewhere?
Seanyb82 is offline  
Reply
Old 04-28-2023 | 05:38 PM
  #2  
Registered
10 Year Member
 
Joined: Jun 2011
Posts: 1,209
Likes: 141
Default

What faults or alarms are you getting?

What was occurring when this condition started?
Trash is offline  
Reply
Old 05-03-2023 | 12:18 PM
  #3  
Registered
 
Joined: Jul 2020
Posts: 323
Likes: 55
From: Cortlandt Manor NY
Default

I have an MEFI1 I am looking to get rid of. Im switching over to Holley EFI
Joeyboost is offline  
Reply
Old 05-03-2023 | 03:10 PM
  #4  
Griff's Avatar
Charter Member # 55
25 Year Member
Charter Member
Super Moderators
 
Joined: Oct 2000
Posts: 20,241
Likes: 2,490
From: Omaha/LOTO
Default

Have you disconnected each alarm sensor one at a time to see if the alarm stops???

My boat had one of my alarm sensor wires spliced at the engine. The spice came apart and the wire was grounding and setting off the alarm. You could have an alarm wire rubbed through and grounding somewhere.
Griff is offline  
Reply
Old 05-03-2023 | 03:33 PM
  #5  
Registered
15 Year Member
 
Joined: May 2009
Posts: 627
Likes: 408
From: Indiana
Default

This all part of same problem in your other post?
liberator221 is offline  
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.