• If this is your first visit to the iboats.com Boating Forums, be sure to check out the FAQ. To post a question or comment, begin by signing up. To start viewing messages, select the forum that you want to visit from the selection below.
  • ALL iboats Forum Members and Guests:
    To show our appreciation for your participation in the Forums, we're offering an exclusive Forums-only discount good for an additional 5% off your iboats.com order for a limited time.
    To redeem, simply call our Customer Service Team at 800-914-1123 (Open M-F, 9am - 8pm Eastern Time) and mention the Forums 5% off discount. Offer excludes engines, trolling motors, and electronics.

Announcement

Announcement Module
Collapse

Help Tip: If you have a question that has not been answered to your satisfaction in the archives, it is always best to start a new thread of your own. By starting your own thread, you will receive the maximum number of views by forum members.

Below are some additional forum policies in hopes of all iboats members will follow, Thank you.

1. Please do not reply to old threads or hijack existing threads. Old threads of a technical nature are like a library book, Please do not write in them.

2. Old threads should be considered archives and used for reference only. Please do not reply to them.

3. Do not take over someone elseís thread (aka hijack) with your own question, even if it is similar. If you have a question that has not been covered to your satisfaction in the archives, it is always best to start a new thread of your own.

4. If you have a question for the original poster (OP) and the thread is over 30 days old, send the OP a PM, he may not even visit the forums any longer, or may not notice your question in the old thread.

5. By starting your own thread, you will receive the maximum number of views by forum helpers that may not even notice your question when itís posted at the end of someone elseís thread. And those answers will be specific to your particular issue.

6. Please do not post to threads that have been inactive for more than 3 months unless you are the original poster. We have very active forums and any thread that remains inactive for that long should be considered "dead". It is especially confusing when there is an entirely new question posted to an old thread.

7. Posting at the end of any thread is considered to be hijacking the original posters thread which in turn subjects the thread to be closed if it continues to happen thus not making it fair to the original poster in the future had for some reason he/she needed to return for additional information or provide an update of the problem solved which is always welcomed within a reasonable amount of time frame.

8. Please note that you should see a red banner pop up near the bottom of each inactive thread asking you not to reply to old threads. The Red banner will read: Please note this thread has been inactive for 90 days. For the best results, please start a new thread.

Thank you all in advance for doing your part in helping iboats run a smooth ship.

Additional forum rules linked below.
http://forums.iboats.com/forum-rules-guidelines-405/
See more
See less

temp alarm at idle only

Page Title Module
Move Remove Collapse
X
Conversation Detail Module
Collapse
  • Filter
  • Time
  • Show
Clear All
new posts


  • temp alarm at idle only

    2008 4.3 L alpha one

    The temp alarm goes off sometimes when I am in Neutral or at low idol. Once I get up to about 5 mph the alarm shuts off. The temp gauge reads normal.

    Any ideas of where to begin? If the impeller was bad I would not think the alarm would not go off at higher speeds. Maybe the thermostat?

    In full disclosure I did install the battery backwards (idiot) and blew the fuse on the starter solenoid and replaced it. Could I have screwed up something else?

    Thanks

    Andy


  • #2
    Re: temp alarm at idol only

    The alarm circuit should have been open when you put the battery in. Dont think that hurt it.
    rebuilding 3 classics
    17 Irvette I/B CC 99%
    20 Shamrock I/B Pilot house. 50%
    28 Slickcraft I/B FB 60%

    Comment



    • #3
      Re: temp alarm at idol only

      Ayuh,... Change the Impeller...
      That's the 1st place to look in Any overheat situation...
      Any Grease is Better,..... Than No Grease at All.......

      Comment



      • #4
        Re: temp alarm at idol only

        The temp alarm goes off sometimes when I am in Neutral or at low idol......... The temp gauge reads normal.
        Get one of those IR Temp guns and when the alarm sounds, aim the gun at the base of the temp alarm switch and see what the reading is.
        If the gun agrees with your temp gauge and there is no overheat, the switch may be defective.
        Don S.

        sigpic

        Please, no PM's (Private Messages) regarding boat/engine problems.
        That is what the forums are for.
        Only forum/moderator issues will be answered in PM's.

        Comment



        • #5
          Re: temp alarm at idol only

          So I changed the impeller, how do I tell if it was bad? It looked to be in good shape. I was not cracked and was there in its entirety

          Comment



          • #6
            Re: temp alarm at idol only

            Start it up and see if the alarm goes off at idle. If it does, the impeller was not your problem. Did you check that it was actually overheating while using a temp gun?
            Don S.

            sigpic

            Please, no PM's (Private Messages) regarding boat/engine problems.
            That is what the forums are for.
            Only forum/moderator issues will be answered in PM's.

            Comment



            • #7
              Re: temp alarm at idol only

              Originally posted by gazelle View Post
              So I changed the impeller, how do I tell if it was bad? It looked to be in good shape. I was not cracked and was there in its entirety

              Ayuh,... Unless the fins were reasonably pliable, 'n self straightening,...
              It wasn't a wasted effort, whether it was the problem, or not....
              Any Grease is Better,..... Than No Grease at All.......

              Comment



              • #8
                Re: temp alarm at idol only

                I do not know about this model, but could it possibly be the oil pressure sending the alarm? Temp gauge reads normal and alarm is only at very low RPM. Oil pressure could be low at idle.
                1997 Wellcraft Excel 19SSX.
                Merc 4.3LX, Alpha 1 Gen +.
                21P Stainless Mirage.
                sigpic

                Comment

                Working...
                X