GM Longroof Forum
Would you like to react to this message? Create an account in a few clicks or log in to continue.



 
HomeHome  PortalPortal  GalleryGallery  Latest imagesLatest images  SearchSearch  RegisterRegister  Log in  

 

 AC working but not cold and Heat not hot

Go down 
5 posters
AuthorMessage
garykohl2




Posts : 6
Join date : 2016-09-06

AC working but not cold and Heat not hot Empty
PostSubject: AC working but not cold and Heat not hot   AC working but not cold and Heat not hot Icon_minitimeSun Oct 02, 2016 4:09 pm

Hey guys,. Just looking for a little help. I have a 96 Roadmaster wagon in excellent shape. AC has been working fine then today I started having an issue. I turned the temp up from 60 to 70 this morning because it was a little chilly at 4 am. Later I put the AC back down to 60 and its cool but not cold. Then I tried turning the heat all the way up and it gets "warm" but not hot. The AC system is working though because the compressor is coming on and the "aluminum canister" is ice cold and has condensation. Any suggestions?
Back to top Go down
silverfox103
Moderator
silverfox103


Posts : 3342
Join date : 2008-11-05
Age : 75
Location : Littleton, NH & St. Simons, GA

AC working but not cold and Heat not hot Empty
PostSubject: Re: AC working but not cold and Heat not hot   AC working but not cold and Heat not hot Icon_minitimeSun Oct 02, 2016 4:23 pm

Hi Gary

You may have two problems, neither one of them real bad.  Your heater core may need to be flushed, flush it one way then the other.  Your AC just may need a charge.  I think that would take care of the problems.

Tom
Back to top Go down
garykohl2




Posts : 6
Join date : 2016-09-06

AC working but not cold and Heat not hot Empty
PostSubject: Re: AC working but not cold and Heat not hot   AC working but not cold and Heat not hot Icon_minitimeSun Oct 02, 2016 6:13 pm

Ok I will look into that. It was just weird to me that it was fine then when I turned the heat on now its not. Its like the temperature setting is stuck warm. Like something isn't opening or closing all the way if that makes sense
Back to top Go down
Rev Bob




Posts : 471
Join date : 2016-05-24

AC working but not cold and Heat not hot Empty
PostSubject: Re: AC working but not cold and Heat not hot   AC working but not cold and Heat not hot Icon_minitimeMon Oct 03, 2016 6:13 am

Sounds like a possible mix door problem. You can dump the AC control parameters to check for commanded and actual mix door position. If they don't match, the system has no control over the delivered temperature from the ducts. Sometimes it just needs a calibration, but more often is an actuator or link problem. Do you have an FSM?
Back to top Go down
phantom 309

phantom 309


Posts : 5848
Join date : 2008-12-28
Age : 114

AC working but not cold and Heat not hot Empty
PostSubject: Re: AC working but not cold and Heat not hot   AC working but not cold and Heat not hot Icon_minitimeMon Oct 03, 2016 11:13 am

pull the battery cable ,. after a minute or so, hook it up, turn key on no start, wait for hvac to do a recalibrate,. this often works,.
Back to top Go down
brokecello
Moderator
brokecello


Posts : 3478
Join date : 2009-05-28
Age : 45
Location : Greenville, SC

AC working but not cold and Heat not hot Empty
PostSubject: Re: AC working but not cold and Heat not hot   AC working but not cold and Heat not hot Icon_minitimeMon Oct 03, 2016 2:36 pm

phantom 309 wrote:
pull the battery cable ,. after a minute or so, hook it up, turn key on no start, wait for hvac to do a recalibrate,.  this often works,.

Yes, that has worked for me before too....back in the day I kept thinking it was a clogged heater core. But it was not.
Back to top Go down
http://www.ChrisPowellmusic.com
garykohl2




Posts : 6
Join date : 2016-09-06

AC working but not cold and Heat not hot Empty
PostSubject: Re: AC working but not cold and Heat not hot   AC working but not cold and Heat not hot Icon_minitimeMon Oct 03, 2016 3:50 pm

Thanks guys. I did do the reset and it is switching between heat and AC like it should. The heat is super hot so it turns out I just wasn't giving it time to heat up...lol Sorry
However the AC is still a problem. when I 1st turn it on it feels like its working but just not as cold as it should be. As soon as I start to drive though it isn't cool anymore at all and its like I just have the vent on. So I think it probably just needs a recharge.
Have any of you used the recharge kits you can buy at the auto parts store before? Seems like it should be pretty easy to do.
Back to top Go down
phantom 309

phantom 309


Posts : 5848
Join date : 2008-12-28
Age : 114

AC working but not cold and Heat not hot Empty
PostSubject: Re: AC working but not cold and Heat not hot   AC working but not cold and Heat not hot Icon_minitimeMon Oct 03, 2016 10:23 pm

garykohl2 wrote:
Hey guys,. Just looking for a little help. I have a 96 Roadmaster wagon in excellent shape. AC has been working fine then today I started having an issue.

so in just one day it went from fine to not working?

Back to top Go down
garykohl2




Posts : 6
Join date : 2016-09-06

AC working but not cold and Heat not hot Empty
PostSubject: Re: AC working but not cold and Heat not hot   AC working but not cold and Heat not hot Icon_minitimeTue Oct 04, 2016 4:29 pm

phantom 309 wrote:
garykohl2 wrote:
Hey guys,. Just looking for a little help. I have a 96 Roadmaster wagon in excellent shape. AC has been working fine then today I started having an issue.

so in just one day it went from fine to not working?


Yes. I bought a kit today to recharge it myself and on the gauges it read it should have been fine. Im giving up and taking it to a shop on Friday.
It is definitely working and cooler than just having the vent on but isn't getting cold enough at all. Everything appears to be working so I'm just confused on what the problem could be
Back to top Go down
Rev Bob




Posts : 471
Join date : 2016-05-24

AC working but not cold and Heat not hot Empty
PostSubject: Re: AC working but not cold and Heat not hot   AC working but not cold and Heat not hot Icon_minitimeWed Oct 05, 2016 6:21 am

""I'm just confused on what the problem could be""

Did you check the mix door operation?
Back to top Go down
garykohl2




Posts : 6
Join date : 2016-09-06

AC working but not cold and Heat not hot Empty
PostSubject: Re: AC working but not cold and Heat not hot   AC working but not cold and Heat not hot Icon_minitimeWed Oct 05, 2016 6:06 pm

Rev Bob wrote:


Did you check the mix door operation?

I did and it seems to be working.
Back to top Go down
Sponsored content





AC working but not cold and Heat not hot Empty
PostSubject: Re: AC working but not cold and Heat not hot   AC working but not cold and Heat not hot Icon_minitime

Back to top Go down
 
AC working but not cold and Heat not hot
Back to top 
Page 1 of 1
 Similar topics
-
» Finally have cold air!
» L03 running cold
» Driving Car Cold
» Cold air intake for my 92 350 TBI. Would it fit?
» 93 RMW new cold air induction....

Permissions in this forum:You cannot reply to topics in this forum
GM Longroof Forum :: Longroof Tech :: Heating and Air Conditioning-
Jump to: