It appears that the blend door is not closing off the heated air completely. I've removed the glove box but can't find a blend door. Help..
Look to see if your vaccum lines are in good condition. the vaccum opens and closes the door otherwise it may be leading to a bad controller
SOURCE: Vents not changeing and no heat
I have a similar problem. Air only comes out of defroster vents. ac compressor does not come on either. I have a manual on my computer if you sent me your e-mail I will send it to you. my e-mail is <[email protected]>
SOURCE: Heater issues.
did you mount the thermostat properly... sounds like it is reversed
here is a picture of the proper orientation
SOURCE: a/c vent issue
heater blowing cold when engine idleing,works good when rpm are up. what is problem? pete
SOURCE: adding free on to 89 maxima
Your '89 Maxima uses an R-12 refrigerant, commonly known as Freon. R-12 has since been discontinued for environmental reasons...newer cars now use R-410a.
R-12 is very hard to obtain these days. You can find it on eBay, but you will need to be EPA certified to purchase. If you can obtain the R-12 somehow, make sure you get it in a kit that includes the hose, tap, and instructions as this will save you some headache.
If you cannot find R-12, I would recommend converting the A/C system over to the new R-410a. Most mechanic shops can do this for you for around $200-$300. The price they quote you should include a complete evacuation of the system, changing the required fittings, and recharging with R-410a, and maybe some PEG oil, depending on the compressor used.
SOURCE: air conditioner is not blowing cold air
if you recharge it with freon and dye then when it leaks out you will see the dye and then you will find the leak.
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