GT40 Idle Control Valve

(rossl) · (rossl) **Join Date: Mar 2007** 08-06-2007, 6:08 AM

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?

(sbt3) · (sbt3) **Join Date: Jun 2002** 08-06-2007, 6:54 AM

Ross you may want to also post your question at http://www.planetnautique.com/ someone over there may know.

(peter_c) · (peter_c) **Join Date: Sep 2001** 08-06-2007, 8:05 AM

Replace the IAC. DO NOT adjust any screws!

(rossl) · (rossl) **Join Date: Mar 2007** 08-06-2007, 9:01 AM

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.

rossl