986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - My Tiptronic doesn't like the hot weather

madmods · 06-24-2011, 09:44 PM

I had similar issue (running hot, slippering, noisy, had it all at once). The transmission’s coolant vacuum valve broken in the 'SHUT' mode. That thing is all made of cheap plastic so very likely yours is fried as well. I've just toss away mine and bypassed the valve with a 3/4" aluminum tubing and two little clips ($2 fix). Now the tip is getting free flow of coolant 100% of the time…. just need to be careful not to push it TOO hard when cold but then, who does that!

Just sharing mate... not sayin this is for sure what's going on with yours.

06-24-2011, 09:44 PM	#3
madmods Registered User Join Date: Feb 2011 Location: Algonquin, Misarikwack Posts: 710	I had similar issue (running hot, slippering, noisy, had it all at once). The transmission’s coolant vacuum valve broken in the 'SHUT' mode. That thing is all made of cheap plastic so very likely yours is fried as well. I've just toss away mine and bypassed the valve with a 3/4" aluminum tubing and two little clips ($2 fix). Now the tip is getting free flow of coolant 100% of the time…. just need to be careful not to push it TOO hard when cold but then, who does that! Just sharing mate... not sayin this is for sure what's going on with yours. Last edited by madmods; 06-24-2011 at 09:47 PM.