Every once in a while the outside temperature readout in the dash will go wacky and readout numbers in the negative (-10 to -30) when it is hot outside. this wouldn't be a big deal if the ac unit didn't start pumping out hot air to try and remedy the situation. Has this happened to anyone else? Where is the actual sensor that gauges the outside temp. located?
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I have a 2000 pontiac grand prix with a digital climate control system.
The heat quit working, it doesn't blow out any heat. Now that it is warm
outside the air stopped blowing out any air. The digital temperature on
the climate control is not correct. When it states that it is below 30
degrees on the ext and it is warm outside the air wont be cold. Once it
starts going above 30 degrees the air gets colder. Today the blower stop
working all together. Was told it maybe the climate control unit was
bad. You can hear the door opening/shutting when you switch the temp
from cold to hot. But there was no heat blowing out whatsoever in the
winter time. Could you please give me your opinion on whether or not it
is the climate control unit or something else?
There should be a thermal sensor under the dash. If you have a Digital dash display for the A/C even better. There is a Code process the people with the Codes can use to self-diagnose the problem.
I made a roundtrip from Detroit to New York in my truck. We had no control of the temperature of the cab during the Blizzard. It would either melt your Glasses or frost them. It was not a simple thing like a stuck vent door.
Since the Electrical parts cost so much, you really don't want to burn out more parts. Ask Autozone or Oreillys about the Thermal sensor. But if it were me, I would just let the Dealer or A/C place Code the Climate Control and be done with it. Then they have the liability for anything that happens.
try this, disconnect the battery negative cable for 5 minutes and reconnect, this reset the climate control system in most cases, it is out of sync, this is a common problem on all late GM cars and trucks with dual climate control, if this doesn;t work u may need to replace the air temperature control blend door actuator for whoich ever side u can't control the temeperature on, if that is the case here.
If you have a digital readout on the temperature and it is an automatic climate control unit, the unit in the dash is acting up. There is a selftest which is different between manufactuers and year models and only a dealer would have enough books to have this info.
Since your air seems to recover by "rebooting" the system, the only part in the A/C that has a computer is the control "head" in the dash. The pressure switches and basic hard components would not respond that way. You can get a used one from a Salvage yard for a lot less than a new one. Let someone do a diagnostic to verify.