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    1993 5.0 Cobra EFI Alternator/Electrical Question

    @alldodge so I did some research and I have a 3 wire alternator. The diagram that you keep referencing is for a Ford 5.0 with carburetors, mine is a bit difference with electronic fuel injection, I don't have carbs. Don't get me wrong, I'm hugely appreciative and I can tell that you know more...
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    1993 5.0 Cobra EFI Alternator/Electrical Question

    Bump/New information: So I operated completely off Battery 1 on Saturday, ran the boat for 90-120 mins, turned on and off 5 or 6 times no issues. Voltage on the battery before I started the day was 12.65, voltage when I ended the day was 12.45 and at no point in time did the alternator gauge...
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    5.7 1987 OMC shuts off at Low RPM

    I agree with everything they have said, but I ran into this a few years ago and after weeks of checking everything I could think of, it ended up being a slightly loose cable to the ignition. So double check that the purple wire to your ignition switch is tight as well!
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    1993 5.0 Cobra EFI Alternator/Electrical Question

    I love the 5am response! I took a photo of my wiring diagram so that we are on the same page about mine being the Ford 5.0 Electronic Fuel Injection. With that being said, if I put a jumper between the S-sense and Ex-Excite terminals can that damage anything? Just worried since the wiring...
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    1993 5.0 Cobra EFI Alternator/Electrical Question

    Haha no worries! I don’t see a jumper on the alternator. I don’t know a lot about this type of stuff, are you referencing the black box that says 250v?
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    1993 5.0 Cobra EFI Alternator/Electrical Question

    No worries at all, I hope I didn’t come across rude, that wasn’t my intent. If you have any ideas on what the problem could be I’d still love to hear!
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    1993 5.0 Cobra EFI Alternator/Electrical Question

    Sorry, I didn't know that any of the GMCs had EFI like I stated in the title, but we're almost there! I have the Ford 5.0 with Electronic Fuel Injection. Specifically Model # 50FAPRJVN. I don't have a digital copy but I have a b/w paper copy of the diagram (Page A-45, not A-44) from the SELOC...
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    1993 5.0 Cobra EFI Alternator/Electrical Question

    Also, I have included a photo of the back of my alternator for reference!
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    1993 5.0 Cobra EFI Alternator/Electrical Question

    I appreciate your assistance and providing a wiring diagram. Unfortunately I have Ford 5.0 EFI, not the GMC. The 3 color cables I have at the alternator are Purple (EXC) Black (Ground) and Orange. The steps I have taken so far are to check the purple cable which is doing 12 volts from the...
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    1993 5.0 Cobra EFI Alternator/Electrical Question

    This entire community has been incredible and my boat has never been in better shape thanks to you all! I do have 1 last issue that I could use some help with. My alternator seems to only be putting out 11 1/2 volts. I have 2 new batteries, had the alternator checked out and it was putting...
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    1993 OMC Cobra Flame Arrestor Hose Question

    Thanks for your help!!! Also probably explains why the engine compartment was so dirty this year haha. This forum has been amazing for someone like me who is only mechanically savvy enough to get himself in trouble, everyone here has been great!
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    OMC Cobra 5.0 lower unit oil question

    That’s impressive! I wish I had the room in my garage and the tools to do that! by the way, do you know the answer to this? https://forums.iboats.com/threads/1993-omc-cobra-flame-arrestor-hose-question.745234/
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    1993 OMC Cobra Flame Arrestor Hose Question

    Good afternoon everyone! While cleaning my engine on my 1993 OMC 50FAPRJVN 5.0 EFI I noticed that the hose from the flame arrestor was not connected to anything. I see where I think it goes but wanted to clarify before I plugged it in anywhere. In addition, the hose seems to stop about an inch...
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    OMC Cobra 5.0 lower unit oil question

    Lou, Everything seems okay and I realized while cleaning the boat today that I forgot to say thank you. Thanks!
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    OMC Cobra 5.0 lower unit oil question

    Thank god!!!! I was really worried!
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    OMC Cobra 5.0 lower unit oil question

    So, I’m an idiot. Hahahaha. I did everything right with changing the lower unit gear oil and started the boat which ran for exactly 15seconds before I turned it off. Then realized I had forgotten to screw in the dipstick screw and it had been just resting on the threads. No oil came out of...
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    OMC Cobra 5.0 lower unit oil question

    Glad I know that now! If you would indulge I do have a question that the manual did not address. When I begin filling from the middle plug do I leave the bottom plug out until oil begins dripping out or do I screw the bottom plug in before beginning to fill?
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    OMC Cobra 5.0 lower unit oil question

    Scott, Thanks! I found a manual online and it says to fill through the middle plug, not the bottom plug!
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    OMC Cobra 5.0 lower unit oil question

    Thom, Thanks! For some reason I thought I had read to fill from the middle hole, glad I didn't do that, luckily I won't be doing it until tomorrow. Thanks for helping me not trash my lower unit!
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    OMC Cobra 5.0 lower unit oil question

    Good afternoon, I have done some research on this but have a few additional questions. I am trying to drain and replace the lower unit oil on a 1993 OMC Cobra 5.0 Ford EFI (model #50FAPRJVN). People here have referenced a resource on Crowley marine buy that does not say to remove the lower...
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