View Full Version : KA24de vacuum problem

07-13-2013, 02:20 AM
ok so I just picked up my 240 and when I turn on the car it idles at 1000-1100 cold. As soon as I give it any gas no matter how little I give it the idle with stay at 1500-2000 rpms and then eventually it will drop down to 1000......eventually. It had some vacuum problems. I fixed the ones I can find but I still don't know what the problem is exactly.

there is a bolt in one of the vacuum lines connected to the IACV-AAC valve and I don't really know why. My friends has that in his to and yet his engine runs perfect. I don't know where to plug that line into if that is the problem. can someone please help.

07-13-2013, 02:45 AM
Vacuum tree (http://www.240sxforums.com/forums/s13-240sx-89-94/112214-mucked-up-vacuum-lines.html)

Has all the photos you need to resolve your issue. Take that bolt out and use the photos in the link as a guide.