86 IROC no AC or heat but air blows
07-24-2023, 01:47 PM
#1
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Car: 1986 IROC-Z
Engine: 305
Transmission: Auto
86 IROC no AC or heat but air blows
Just got an 86 IROC and I can get air to blow out the vents, but I get no cold air or hot air. It's just room temp air no matter what. Any ideas?
07-24-2023, 02:09 PM
#2
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Re: 86 IROC no AC or heat but air blows
Let's start with the basics. For the AC, does the clutch engage?
07-24-2023, 06:55 PM
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Car: 1986 IROC-Z
Engine: 305
Transmission: Auto
07-25-2023, 10:19 AM
#4
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Re: 86 IROC no AC or heat but air blows
LOL, well that would be a problem with no AC in the car. As a TEST, unplug the cycling switch (found on the dryer) and jump the two wires (with the car running and the AC controls set to ON). If the compressor kicks on then we have low refrigerant. We will need to find the reason why it is low (leaks, etc.)
07-25-2023, 07:03 PM
#5
Re: 86 IROC no AC or heat but air blows
AC is one thing.... But no heat??? That's odd.... Either the heater core is not piped up... Or the bypass valve is stuck... Or the heater blend door doesn't work....
Personally... I would start with the heat... It easier and could point to other issues... Like is their hot coolant going to the heater core.
Personally... I would start with the heat... It easier and could point to other issues... Like is their hot coolant going to the heater core.
07-26-2023, 11:25 AM
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Car: 1986 IROC-Z
Engine: 305
Transmission: Auto
Re: 86 IROC no AC or heat but air blows
Thanks for the replies... life got in the way so it'll be a few days before I get to test the things you guys mentioned.
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