Safe Mode RESOLUTION


Divergirl

Divergirl

Member
Hello All,

As I have posted, my starboard TAMD74 P-B engine has been going into safe/limp mode for about one year. It was right after the SPM Kit was installed to bring resolution to the safety recall of the engine placing itself into gear while in idle and neutral.

After swapping computers, potentiometers, and the wires of the SPM Kit, I emailed VP Customer Service and chatted with Dana Hatten. She sent my email to the lead technician at VP. He suggested the fault code was not 27 (potentiometers), but that of 2.7, which is electrical. And, was he ever right. Now keep in mind I have spent a bunch of money and had numerous sets of VP technicians on my boat. NONE of them diagnosed this issue. Anyone guess? It was a extremely corroded cannon plug on the starboard wiring harness. And, this was diagnosed by the guy I use for regular maintenance when I am getting ready to cross to the Bahamas. He was aboard last week checking the belts, bilge pumps, oil, tranny fluid, sea strainers, etc. I told him the safe mode story and all of the swapping out of computers, SPM wiring, & potentiometers, to no avail. He looks at the starboard engine, picked up this ugly, corroded "plug" and says "bet this is the problem". It was so badly corroded he could not get it apart. He cut all the wires and set to wiring & splicing away! Long story short....pun intended....she runs like the dream boat she is! I let Dana Hatten know that the lead tech was right in that it was 2.7 fault code & not 27 and that it was fixed in about 2 hours. Unfreakin believable!

I know there were a few other boats out there with this problem....get out there and change the cannon plugs!

I hope everyone is safe and well!

Divergirl
 
Divergirl. PLEASE let us know where this plug is located. Might be a solution to all of our problems. Thanks.
 
Here is a picture once Mark cut it...it is so corroded it would not pull apart.Cannon Plug.jpgThis cannon plug was on a harness which, in my boat, was to the right of the black fuse box, if you were facing the starboard engine. The fuse box is mounted on the starboard engine, I believe.
 
Thanks for the info Divergirl. I believe that is the harness that is involved in the recall where you need to bypass 3 wires in that harness. CCD8A361-2E1F-46C5-8BEF-BF70C8AB9E4C.jpgI hope the photo uploaded.
 
I do not think it is the harness involved with the recall. That is clearly on the left of that black fuse box, as indicated in the photo you attached. This is on the right of that black fuse box. I am really in touch with that safety recall harness, with all the crap I have been through with that. My boat is on the hard right now. I take it to Cable Marine East in Ft. Lauderdale. The manager of that shop is Keith Willis. He has been the manager for a long time because when I moved to FLL in 1992, I had to have my 30 foot boat transported and they took delivery of it and converted whatever had to be converted from fresh water to salt water. Keith was there then. When I called to make the appointment for haul out, I told him about the safe mode issue. He said "it has to be the cannon plug". "We can fix that while your boat is on the hard". Well, in the meantime, Mark my regular maintenance guy, as I posted earlier, found it and removed it, rewired it...so, when I showed up at Cable on Tues., Keith asked if they were changing out the cannon plug. I showed him the picture I posted here, and he said "that's it". Keith has diagnosed more problems my boat has had than any VP mechanic. He is the most knowledgeable guy down here, that I know of.
 
Thanks again for the info. I’m going to go down and look for this plug. I may have to call this guy Keith.
 
I went down to the boat this morning and really took a good look at the harnesses referenced above. Both the recalled harness and the cannon harness. The 3 wire recall bypass was done and there was no cannon harness on the port engine. Someone bypassed all the wires. So now what? I don’t know what to do next. Really frustrated! I know it’s not a limp mode issue for me but the shifting inconsistency is nerve racking.
 
Hi....just got Divergirl back to the dock yesterday as she was on the hard...my guy Mark, who did the rewiring of the SB cannon plug is supposed to come to the boat tomorrow or Tues. I asked him to go ahead and redo the cannon plug on the port so, I will tell him what you found and see what he has to say.
 
jlazzfp said:
I went down to the boat this morning and really took a good look at the harnesses referenced above. Both the recalled harness and the cannon harness. The 3 wire recall bypass was done and there was no cannon harness on the port engine. Someone bypassed all the wires. So now what? I don?t know what to do next. Really frustrated! I know it?s not a limp mode issue for me but the shifting inconsistency is nerve racking.
Click to expand...

Can you see the bypass splices? Make sure they were done properly and in good condition?
 
I can see them. They look good to me. Seem tight. Not loose at all. Is it worth it for me to redo those 3 wires? The whole cannon plug bypass is totally sealed with tape. I’m afraid to touch it.
 
Divergirl - the picture shows the mechanic is at the helm and one of the fuse panels next to the starboard speaker - is that where the cannon plug is? Or is it in the engine bay??
 
It is in the engine room and next to the black fuse box mounted on the engine itself, I believe. He changed out the port cannon plug as well, last week. After he has rewired, he is applying Liquid Electric Tape which he had me buy at Ace Hardware.
 
Yes I used Liquid electric tape for the past 40 years even after I stopped working. Another great product is Plasti Dip, comes in spray and liquid. So have you stopped looking for a 48?

Divergirl said:
It is in the engine room and next to the black fuse box mounted on the engine itself, I believe. He changed out the port cannon plug as well, last week. After he has rewired, he is applying Liquid Electric Tape which he had me buy at Ace Hardware.
Click to expand...
 
That’s amazing. Beautiful job! A 47 just came up with the Volvo engines. Thinking about it. Really want it but still concerned about the Volvo Engines.
 
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