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Bad ECM

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ski-Naut Quote  Post ReplyReply Direct Link To This Post Posted: May-10-2017 at 9:09am
This is what is in my '96' GT40

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Gary S View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Gary S Quote  Post ReplyReply Direct Link To This Post Posted: May-10-2017 at 12:11am
Here is what else I found out - 300m must be the latest software tune for GT 40 the '97's at least used the E 290. It would be interesting to know Nick what the numbers were on your original ECM . Can you check and maybe post a picture?
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Gary S View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Gary S Quote  Post ReplyReply Direct Link To This Post Posted: May-09-2017 at 5:02pm
It's the model # on the GT40 computer

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ski-Naut Quote  Post ReplyReply Direct Link To This Post Posted: May-09-2017 at 4:30pm
What is a 300-m
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ski-Naut Quote  Post ReplyReply Direct Link To This Post Posted: May-09-2017 at 3:53pm
Thanks for the Info.... I will try Planetnautique and I will let you know what happens..
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fl Inboards Quote  Post ReplyReply Direct Link To This Post Posted: May-09-2017 at 3:52pm
I have a known good running 300-m on the shelf. Just used it to test another gt engine. I will sell it but I will not give it away.
$900 I will ship it to ya!
Or try E-bay and ski-it-again.com

Not a lot of people know this but Volvo Penta also utilized the GT-40 engine for a number of years.
An example from e-bay yes it is for a 5.0/302 but I have seen ECM's for the 5.8 on E-bay also!
http://www.ebay.com/itm/OMC-VOLVO-PENTA-5-0Fi-OMC-FORD-5-0-Litre-EFI-MODULE-3854889-3854542-3854892-
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 63 Skier Quote  Post ReplyReply Direct Link To This Post Posted: May-09-2017 at 3:44pm
Gary beat me to it, the thread on PN seems to be the most promising fix for a bad GT-40 ECM that I've seen.

I'm really surprised that any parts house sold you an ECM, it's known that there are none on shelves and that PCM isn't able to make or support any at this time. You may also be able to find one on Ebay, they are certainly getting scarce.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Gary S Quote  Post ReplyReply Direct Link To This Post Posted: May-09-2017 at 3:22pm
Try this link here- Planetnautique If you go this route be sure to post back here and let us know
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ski-Naut Quote  Post ReplyReply Direct Link To This Post Posted: May-09-2017 at 3:14pm
I have a 1996 Super Sport Nautique with a 351 GT40 Engine. I have a bad ECM, ( Electronic Control Module) does anyone know if it can be repaired? I purchase a new one from NautiqueParts.com that wasn't any good. I had my PCM Dealer talk direct to PCM and they told him that Nautiiquepart.com should have never sold the ECM because they have not found a good ECM yet......I tried a ECM out of a '92' Ford Econo Van and the engine starts and runs for about a minute then starts to choke and puke, so I know the original ECM is the problem. Can anyone help.
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