Subject	Heater doesn't work. Set to 90, AC is visibly operating...
Posted by	thumper300zx on October 21, 2019 at 11:38 PM
	This message has been viewed 257 times.
Message	My heater hasn't worked for a few years. My first attempt (three years ago?) to fix was to manually mess with the heater hose valve. Didn't really help. I just pulled the ambient sensor and the fan spins. The resistor wires are good and no touching. If I put the temp up to 90, it just blows cold air and I can even see the metal refrigerant line (engine bay at firewall) getting icy. All the controls work (I can change floor, face, defrost, etc). Could it be just a shorted resistor making the car think it's a million degrees inside? Any easy test? I've tried the diagnostics in the past, but didn't get far. Maybe I just need to try that again? VISIT thumper300zx.com for PICS and TECH PAGES
Follow Ups	Heater doesn't work. Set to 90, AC is visibly operating... - thumper300zx 23:38:08 10/21/19 Oh, one more small detail... - thumper300zx 23:40:26 10/21/19 On this note, the A/C will turn off under hard acceleration - Agent X 06:42:23 10/22/19 Re: On this note, the A/C will turn off under hard acceleration - thumper300zx 18:39:13 10/22/19 Re: Re: On this note, the A/C will turn off under hard acceleration - thumper300zx 12:06:27 10/23/19 My 90 NA did this.. - Cjw3 07:16:23 10/22/19 ^^^ The blend motor (n/m) - ThisIsSparTTa 08:31:59 10/22/19 Re: My 90 NA did this.. - thumper300zx 18:37:38 10/22/19 Re: Re: My 90 NA did this.. - Cjw3 07:19:42 10/23/19 Jacked up the car this morning... - thumper300zx 10:45:07 10/23/19 The Blend Door Controls the Water Flow to the Core (n/m) - Cjw3 10:13:38 10/24/19 Re: The Blend Door Controls the Water Flow to the Core - thumper300zx 15:04:00 10/24/19 yes..BTDT (n/m) - Cjw3 18:39:20 10/24/19 Re: yes..BTDT - thumper300zx 19:56:11 10/24/19 I had some time today... - thumper300zx 14:54:36 10/26/19 PICS of what I did today... - thumper300zx 15:08:40 10/26/19 This looked hopeful, but it's for manual controls... - thumper300zx 16:17:39 10/26/19 Ran Diagnostics... - thumper300zx 21:50:57 10/22/19 Re: Ran Diagnostics... - mrchips 08:43:01 10/27/19 Re: Re: Ran Diagnostics... - thumper300zx 09:48:22 10/27/19 I'm gonna go back through diagnostics now that I know... - thumper300zx 12:24:00 10/27/19 Still not 100% sure I get the diagnostics...but - thumper300zx 23:00:06 10/27/19 Re: Still not 100% sure I get the diagnostics...but - thumper300zx 10:33:32 10/28/19
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