Our 1996 Super Sport Nautique with GT40 EFI, surges at idle from 600 to 1200rpm about 30% of the time, i took of the idle control valve and cleaned it out and it is now a bit better but still does it about 15% of the time, can i just disconnect it and set the idle manually with the butteryfly stop screw? do I need an idle control valve, as it seems to be more useful for cars with aircon etc?

Ross you may want to also post your question at <a href="http://www.planetnautique.com/" target="_blank">http://www.planetnautique.com/</a> someone over there may know.

Replace the IAC. DO NOT adjust any screws!

Anybody know a part number for the IAC Valve as the boat is not near and i will take a new one up at the weekend if i can get one in time. <BR> <BR>rossl