ok was checking all of my interior parts to see what all might need to change...when i turned on the A/C it only blows from the defrost vents and on the floor, any idea why's that?

 

1990?

 

Not too familiar with the z yet but might be a vac leak? Does it switch from floor to def to other with heat?

 

@ZLover4Life......... Yup it's a 1990, I'm guessing this is a very common problem for that year?

 

Not a common problem at all... because it's probably not a "problem." If memory serves (note that I haven't owned a Z32 in over a year), if the temperature is set to one of the extreme temps (coldest or hottest temp), it doesn't use the main vents (Nissan engineers didn't think people would want super hot or super cold air blowing directly at them). Set it to a middle temperature and see if the dash vents work, then. If they still don't blow any air, you could have a ducting or fan problem.

The way the climate control system was designed was to get the cabin to a temperature and maintain it there, requiring no additional user input... most Z32 owners don't like it, but that's how it is.

 

i can only seem to adjust the "set" & not the "ambient" the "amb" is like 20 something and the ac only cuts on if i set it to auto other than that nothing else comes on

 

Because the ambient temp is the outside temp behind the front bumper, the A/C compressor is only on when the a/c system is set in auto climate control which will make the compressor run until the air temp sender in the cabin reaches what temp you have set on the controls. You have to turn the A/C system on auto and then select what mode you want it on (defrost, heat, econ, vent..etc) Your owners manual will tell you how to use it.

 

lol

Yeah. User manuals are generally useful. Not the car's fault if you don't know what you're doing.


LOL

 

but what i'm saying is when i turn it on "auto" the vent that blows on me closes and goes straight to defrost....what i'm trying to say is how do i solve that


P.S.
the car didn't come with the user manual unfortunately

 

ummmm...

What I'm saying is, there's nothing to solve. If the AUTO (hint hint) climate control turns off the main vents, there's nothing you can do about it.