help with blower heat

[ranziel]

hey guys i have this problem with my 97 240sx
the vents would not change from vent to def..
the first thing i replaced was the bi level motor because it was bad.
then replaced the control unit and still would not change front vent to def
got a used control unit and still the same so i replaced the mode door motor and still nothing
i would a appreciate any help

[Mikester]

Is the mode door the same as the blend door actuator? If not, you may try that. Only thing left besides that would be the blower motor resistor - except that is usually for fan speed, not mode changing IIRC.

[ranziel]

thanks for the help...
where is the blower motor resistor located??? the one im talking about this part number 27733M
270 Heater & Blower Unit :: Body Electrical :: Genuine Nissan Parts :: 240SX Parts (S14) 1995-1998 :: Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com (http://www.courtesyparts.com/240sx-parts-s14-1995-1998/genuine-nissan-parts/body-electrical/270-heater-blower-unit/-c-3690_3691_3727_3744.html)

[Mikester]

I think what you may need is 27733N

[ranziel]

What does that do ???

[Mikester]

It controls the airflow mix between defrost, dash and floor vents... Electrical actuator connected to the vent system baffles mechanically by a small armiture. AKA blend door actuator... On a JDM S13, you can see it from the RH floor back behind the center console underneath the main center vent... Not sure about S14, but I am sure a Google image search can show you where one is.

[Mikester]

Sometimes, the armiture can pop off depending on how it is secured- pull your center console apart and give it a look... you may get lucky and just need to put it back on.

[ranziel]

ok if that goes bad would that make the mode door actuator not get like any power to operate ??
http://www.240edge.com/manuals/95_240sx/ha.pdf
thanks for ur help man

[Mikester]

Yes, if the air mix actuator goes bad, the little armiture will not move... If the armiture does not move, the air won't go from vent, to floor, to defrost etc.

[ranziel]

thanks man im gonna order that part now

[Mikester]

thanks man im gonna order that part now

Why don't you take the console apart and verify it is not working before just ordering a part? I told you, it may be as simple as reconnecting the armiture.

[ranziel]

if u mean the dash.. i cant do that right now because if i do the car will be apart and well i can leave the car where it is for that long i rather order that and take it apart and if is not bad i can return the new one then keep waiting
but if u mean the console where the radio and control unit is i have that apart ill check as soon as i can