Check Engine light/limp home

[1Wake2Wake3]

I stopped for gas yesterday afternoon after a pretty good day on the water. I pulled out of the gas station to fill the ballast tanks in my 2001 super air with the gt-40. I got my buddy up to wake surf and immediately the check engine light came on and the engine started acting as though it was hitting a rev-limiter. I turned her off for a couple of minutes then back on. No check engine light came on until I got home. Turned her back off when I pulled into my dock. Came back 2 hrs. later, fired her up again, no check engine light initially, but it came on about 5 mins. later. Gauges reading normal (temp, oil pressure). I checked my v-drive fluids and they were low so I added some Dex (hoping that might be the problem, but it wsan't). Now I'm concerned.

2 questions:

1- When the boat would "hit the rev limiter" is that the boat going into a "limp home mode?" Would that help diagnose anything?

2- Any one have any ideas on where to start with this? Should I take a trip to the dealer and sacrificing the beginning of summer?

[Housers99]

I had a similar problem with the GT-40 in my 99 SN. After a lot of headaches, we figured out that the water temp switch was going bad. A year or two later, the oil pressure switch went bad and the boat did the same thing. I think they are relatively cheap to replace, so you might start there. I'd recommend calling Discount Inboard Marine to make sure you get the right parts. Best of luck.

[Rick]

RE: Check Engine light/limp home

Temp or Oil pressure are the 2 most common reasons to go into limp mode. Also the knock sensor can set it off. Did you check the oil in the boat? If you have an anaylser you can pull the codes off the control box Thats a good place to start. good luck

[1Wake2Wake3]

RE: Check Engine light/limp home

I checked the fluids. It's only been about 15 hours since the last oil change. Is there any way to figure out if it's the water temp switch or oil pressure switch without pulling the code? Thanks for your help.

[WakeSlayer]

RE: Check Engine light/limp home

They are all three simple items to replace, if you don't have a means to get the codes. I would try and get the codes so you can understand the problem and just fix the bad part.