1. clogged w. rust and sludge - no heat 2. leaking vanes in the core or tubes - leaking out of lower vents 3. leaking flow valve - leaking out of lower ventsOther problems could be the mode door motors being dead or stripped threads and inoperational defrost for example. A new core comes as an assembly w. new tubes attached. ![](http://www.yugobernie.com/images/Cars/Stuart_Dvorkin/Heater_Core/20161011_232851.jpg)
Here are a bunch of photos from an install last year: [ http://www.yugobernie.com/images/Cars/Stuart_Dvorkin/Heater_Core/ ]
![](http://www.yugobernie.com/images/TTnet_Sigs/yugobernie_sig_b12m.jpg) Bernie Bilski berniebilski@cox.net President of Z-Car Club of Northern Virginia 1995 Nissan 300ZX TwinTurbo in Cobalt Green 1997 Nissan 240SX SE in Ultra Red 2006 Nissan Frontier SE in Ultra Black
![](http://www.yugobernie.com/images/TTnet_Sigs/zccnv_logo_new.jpg)
|