User Tag List

Thanks Thanks:  0
Likes Likes:  0
Results 1 to 6 of 6

Thread: Merc Trouble!

  1. #1
    Join Date
    Oct 2005
    Location
    Nocona TX
    Posts
    20
    Thanks (Given)
    0
    Thanks (Received)
    0
    Likes (Given)
    0
    Likes (Received)
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Merc Trouble!

    So I take a 2006 225 proxs put on 250 xs heads and 250 xs pcm all off of 2007.. Tach follows self test when key is turned on..I put on all the coils and the motor harness from the 2007 250xs and check all the part numbers like the crank sensor tps air injectors ect ...all of them are the same and I get no throttle it will idle but the tach goes to about 5k at a idle and it has no throttle just as if your opening up the butterfly but getting no spark advance or fuel ..my key harness is the 8 pin to 14 pin with the jumper..Im thinking the only thing left is the motor harness..any Ideas?
    Thanks

  2. #2
    Join Date
    Jun 2006
    Location
    Silverton section of Toms River, NJ/Stuart, Florida
    Posts
    10,205
    Thanks (Given)
    374
    Thanks (Received)
    314
    Likes (Given)
    821
    Likes (Received)
    1999
    Mentioned
    1 Post(s)
    Tagged
    1 Thread(s)
    Whats the jumper? Are u using a mercury adapter harness? Have rerigged a number of these in the shop and have never used a "jumper". Just curious.

  3. #3
    Join Date
    Oct 2005
    Location
    Nocona TX
    Posts
    20
    Thanks (Given)
    0
    Thanks (Received)
    0
    Likes (Given)
    0
    Likes (Received)
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Yes the jumper is a 8 pin to 14 pin there pretty common but Im wondering if that is what is going on?...Do you think that might be the problem? ..It goes at the motor end where the 8 pin merc harness has to jump to the 14 pin opti connector

  4. #4
    Join Date
    Oct 2005
    Location
    Nocona TX
    Posts
    20
    Thanks (Given)
    0
    Thanks (Received)
    0
    Likes (Given)
    0
    Likes (Received)
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Oh and yes its a mercury harness adapter..or 8 to 14 pin jump harness..

  5. #5
    Join Date
    Jun 2006
    Location
    Silverton section of Toms River, NJ/Stuart, Florida
    Posts
    10,205
    Thanks (Given)
    374
    Thanks (Received)
    314
    Likes (Given)
    821
    Likes (Received)
    1999
    Mentioned
    1 Post(s)
    Tagged
    1 Thread(s)
    ok you said 8 to 14 WITH the jumper, like the jumper was something else. Just a misunderstanding. I would start with spreading the 8 pin connectors a little with a sharp knife to make sure when plugged in they make good contact.

  6. #6
    Join Date
    Oct 2005
    Location
    Nocona TX
    Posts
    20
    Thanks (Given)
    0
    Thanks (Received)
    0
    Likes (Given)
    0
    Likes (Received)
    0
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Yes I agree I did that and then when you put the 06 225 pro xs motor harness and coils and ecm back on everything is fine ....put on 250 xs motor harness .....coils....ecm ...thats when it idles but will not power up and the tach is acting crazy ....so thats why I was thinking that maybe the key harness wont jive with the newer ecm??...does that even sound rite to you?....it acts so much like a ground problem its not funny but when you go back to 06 set up there is no problem so if its ground its in the way the key harness is wired I was thinking but I was sure hoping maybe you had another Idea..Thanks for trylng to help me!!!

Similar Threads

  1. trouble with a merc
    By GAZOO in forum Technical Discussion
    Replies: 3
    Last Post: 08-02-2010, 09:16 AM
  2. 3.0 225 merc trouble
    By fishhead210 in forum Technical Discussion
    Replies: 4
    Last Post: 06-10-2007, 11:42 AM
  3. 3.0 225 merc trouble
    By fishhead210 in forum Technical Discussion
    Replies: 7
    Last Post: 06-05-2007, 01:58 PM
  4. 115 Merc trouble
    By mousamlakespeedster in forum Technical Discussion
    Replies: 2
    Last Post: 07-15-2006, 11:39 AM
  5. Merc Trouble/please Help?
    By OIDALE in forum Technical Discussion
    Replies: 12
    Last Post: 10-18-2004, 05:49 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Chris Carson's Marine