2nd Generation Specific 1986-1992 Discussion

Heater Not Working?

Old 12-15-2004, 05:00 PM
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My heater has never worked. So I removed the 2 rubber hoses in the engine bay where they meet the fire wall. I shoved a hose over one hole, and turned it on. I saw coolant come out of the other hole, so I guessed that the heater core is not clogged. Any time I turn my heater on, I never can detect moisture on the floor, so I think that it's not leaking. (I did detect some water, but I think it's from me blasting the hose there, it didn't smell like coolant and was very cold).



So what's the deal? The air doesn't even get warm. All I want is some defrost, and maybe a little warmth for me fingers.
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Old 12-15-2004, 05:06 PM
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maybe the logicon is messed up
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Old 12-15-2004, 05:18 PM
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with the key on engine off, when you move the heat lever do you hear the motor?
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Old 12-15-2004, 05:34 PM
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Yep, I can hear the blower motor if that's what you mean, at all different speeds. I can also hear the sounds of the little motors when I switch from face/feet/defrost and such. All the indicator lights work fine as well.



I also felt around under the dash for warm air in case the ducting was blowing it somewhere else.
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Old 12-15-2004, 05:36 PM
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its gotta be the logicon, its just not switching to get the air through the core
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Old 12-15-2004, 05:36 PM
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when was the last time you changed the thermostat?
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Old 12-15-2004, 05:42 PM
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Originally Posted by Rob x-7' date='Dec 15 2004, 06:36 PM
when was the last time you changed the thermostat?

um, never since I've had the car.
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Old 12-15-2004, 06:21 PM
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Originally Posted by Baldy' date='Dec 15 2004, 03:34 PM
Yep, I can hear the blower motor if that's what you mean, at all different speeds. I can also hear the sounds of the little motors when I switch from face/feet/defrost and such. All the indicator lights work fine as well.



I also felt around under the dash for warm air in case the ducting was blowing it somewhere else.



so with the blower off you hear the hot/cold motor too? if you do that part is working
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Old 12-15-2004, 06:50 PM
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Originally Posted by Baldy' date='Dec 15 2004, 06:41 PM
um, never since I've had the car.



change that and see what happens, open thermostat will not allow heat
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Old 12-15-2004, 06:58 PM
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Yeah open thermostat = engine runs too cold = not optimum for motor = no heat for you in the cab.
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