I have a 95 240sx Auto transmission and I change a brand new water pump last year and thermo stat. Heater was woriking last month and all of a suddent no more. I checked all the fluids and they are all topped off. The engine temperature is at normal. Heater blower works but blows cold air. What could this be? Thermostat? Let me know guys. Thanks in advance.

 

it's possible that the thermostat is stuck open or that the heater core is blocked.

 

did you install the Tstat with the lil nipple looking thing at the 12o clock position?? if not that could stop the Tstat from opening up properly.

 

the nipple thing or air vent or bleeder hole, whatever you want to call it is only to bleed the air out. it not likely to affect the thermostats operation.

 

depends on what brand bro.. some of them want you to have it there... just another option

 

Hmmm, I cant remember what kind of a Thernostat I put in, Would you guys suggest changing it anyways?

 

yea... just change it out.. they are cheap

 

Ok I will go purchase one and put it in, Since this is Canada We need Heat soon. What temperature of thermostat do you recomend?

 

mehhh 160deg