I have a Tohatsu 90 TLDI bought new in 2004.
My engine had been running a bit rough at troll so replaced the plugs and added a can of seafoam to the tank before the last trip. Went out yesterday and the engine sounded perfect all day until while heading back to the dock from grouper trolling I had all three tach lights flash at me and the engine knocked itself back to idle speed. It had happened once before a couple years ago and the guys on this board......Shoes and the very helpful guy from Tampa told me it was probably a loose battery connection and that was it, problem solved. In that incident it was intermittent. Yesterday once it flashed I could not get the boat to go above 2800 for more than a few seconds before it kicked in. Checked the connections and they were tight.
I looked at old posts here from others and did see where the battery is supposed to be 1000 CCA......mine is only 720 cca but the battery is new, couple months old, in fact it is two new batteries the 720 hooked together with a 500 cca batt for reserves. I know the terminals and batt connections are bright and shiny as I just cleaned them when I put the two new batteries in. ( I Replace the batts every 2 years if they need it or not) Even though the batt is not a 1000 it has worked fine up till this point. I had sprayed corrosion X on the terminals just before this last trip but don't see why that would matter. I will check the wires connecting to the batts today to se if there is any corrosion under the shrink wraps at the connections. Can you even check the wires on the motor? I looked and could not see where they were even accessible.
I do not have a manual but will be picking one up as this is my first out of warranty problem.
Why is it if you have a dead battery and get a jump start at the dock and start the engine you can then motor away and the low voltage thing does not happen?
Does disconnecting the battery reset the TPS and ECU or just that kill switch procedure?
I did not know the TPS ECU reset procedure yesterday, could that be what the problem is?
Thanks all in advance for any suggestions or advice on what to look for that could be the culprit.
My engine had been running a bit rough at troll so replaced the plugs and added a can of seafoam to the tank before the last trip. Went out yesterday and the engine sounded perfect all day until while heading back to the dock from grouper trolling I had all three tach lights flash at me and the engine knocked itself back to idle speed. It had happened once before a couple years ago and the guys on this board......Shoes and the very helpful guy from Tampa told me it was probably a loose battery connection and that was it, problem solved. In that incident it was intermittent. Yesterday once it flashed I could not get the boat to go above 2800 for more than a few seconds before it kicked in. Checked the connections and they were tight.
I looked at old posts here from others and did see where the battery is supposed to be 1000 CCA......mine is only 720 cca but the battery is new, couple months old, in fact it is two new batteries the 720 hooked together with a 500 cca batt for reserves. I know the terminals and batt connections are bright and shiny as I just cleaned them when I put the two new batteries in. ( I Replace the batts every 2 years if they need it or not) Even though the batt is not a 1000 it has worked fine up till this point. I had sprayed corrosion X on the terminals just before this last trip but don't see why that would matter. I will check the wires connecting to the batts today to se if there is any corrosion under the shrink wraps at the connections. Can you even check the wires on the motor? I looked and could not see where they were even accessible.
I do not have a manual but will be picking one up as this is my first out of warranty problem.
Why is it if you have a dead battery and get a jump start at the dock and start the engine you can then motor away and the low voltage thing does not happen?
Does disconnecting the battery reset the TPS and ECU or just that kill switch procedure?
I did not know the TPS ECU reset procedure yesterday, could that be what the problem is?
Thanks all in advance for any suggestions or advice on what to look for that could be the culprit.