06-11-2018 | #1 |
Join Date: Oct 2016
Location: Atlanta GA
Posts: 51
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AC Not Blowing Cold
Hello Everyone, my 91 decided to stop blowing cold yesterday when I needed it here in the ATL. Last time I used it, blew cold all summer last year.
I saw in a post where it was suggested to disconnect the negative battery cable for 10 minutes to reset the ac components. I did that and it now blows cold (for now anyways). My question is: Should I be looking for something else as to why it stopped blowing cold in the first place? At least I know it has R12 freon (and not getting a code) Thanks for you help in advance! |
06-11-2018 | #2 |
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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Re: AC Not Blowing Cold
I always thought something in the C68 Controller caused that to happen. when I had my 89 (with 91 dash) this happened when I needed it to work. I am sort of happy the AC in my ZR-1 is the C60, for that reason
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
06-13-2018 | #3 |
Join Date: Aug 2015
Location: Magnolia, Texas
Posts: 884
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Re: AC Not Blowing Cold
When you disconnected the battery, it erased the stored fault code. If it happens againain, push both the up and down fan speed buttons and hold them down until the display shows -00.. then press the fan button to recoverer the error code. I'm betting you will get a -09, low freon..
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06-14-2018 | #4 | |
Join Date: Oct 2017
Location: TX
Posts: 2,038
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Re: AC Not Blowing Cold
Quote:
Check the pressures and bring them up to spec if you get the code 9. Sniff it for leaks. Depending on ambient temp, if you are running on the low side you could have the system shut down and get the code.
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Kenny 1990 #442 |
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06-14-2018 | #5 |
Join Date: Oct 2016
Location: Atlanta GA
Posts: 51
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Re: AC Not Blowing Cold
Thanks guys for the input on my AC situation. Worked ok again yesterday so hope it is isolated. My understanding is it is best for the AC if you use once in a while rather than not - I went over a year before I turned it on last week as I always drive it on nice days and without the t-tops. But it does get rather warm here in GA! Thanks Again!
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06-14-2018 | #6 | |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,708
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Re: AC Not Blowing Cold
Quote:
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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06-16-2018 | #7 |
Join Date: Nov 2007
Location: Sunshine State
Posts: 1,071
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Re: AC Not Blowing Cold
Not to hi jack... but Im having a similar issue. I pulled the battery cable.. still not cold. Check codes... there are none... stays on -00 The green light does not flash. It blows warm air in all modes.... what should I look at next?
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06-16-2018 | #8 |
Join Date: Oct 2016
Location: Atlanta GA
Posts: 51
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Re: AC Not Blowing Cold
Thanks for all the reply posts on my ac problem - it is low freon and when I disconnect the negative battery post it only erases the 9 code it pulls. From a suggestion, I pressed the up/down buttons on the dash(same time) and than the fan button in the middle - a 9 code appears.
Now back to fixing the low freon problem and why it leaked. Will use suggestions posted. Thanks again! |
06-16-2018 | #9 |
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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Re: AC Not Blowing Cold
Marc H. Also suggests checking the high side schrader valve those are another source of a leak
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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