my 83280zx still has no heat...I did a bit of investigating and the vacuum system seems to be working as I now get air to all the different vents and the rod going to the water **** seems to be coming out about 8mm when I push it to hot but one off the hoses to the heater core gets hot but the other dosent get as hot..I tried pulling on the water **** cable with pliers but cant pull it out any further..Also when I move the temp control from one side to the other it often gets stuck or pulls the other lever along with it and its the same if i move the other lever the temp control gets pulled along as well..Is this normal...Are they linked in any way???Is there anything else that lets the water into the core??Sometimes the passenger floor gets hot as well is this normal???Thaks