A/C doesn't work
Thread Starter
Pro
Joined: Nov 2003
Posts: 682
Likes: 8
From: Alexandria VA
A/C doesn't work
I was just reading the post started by CAracer, and I am also having problems with my A/C - as in it doesn't work at all. No matter what temp I set it for it seems the same temp air blows out; no hint of A/C When I hit the A/C button the light will flash and then go out completely. Owners manual says this will happen when a/c operation is not allowed, but what would cause this? Its not like I've never used it before, its been in the family since it was purchased new in late 98, so I don't know what the deal is. Where to start, what the check?
Instructor
Joined: May 2004
Posts: 196
Likes: 0
From: leominster ma
I just delt with a problem like that last week, I was running my ac then it started to blow hot air and I would push the ac button and the light would blink then go out. I then started to drive and it started working.
I don't know what happened.
I don't know what happened.
Thread Starter
Pro
Joined: Nov 2003
Posts: 682
Likes: 8
From: Alexandria VA
Unfortunetly I have tried pushing the button, with the car in park and moving, more times than I can count with different combinations of other funictions on/off and it just plan wont work.... 
Last edited by DickieC.99; Aug 3, 2004 at 02:36 PM.
Thread Starter
Pro
Joined: Nov 2003
Posts: 682
Likes: 8
From: Alexandria VA
Anyone remember if there is a seperate connection for thr A/C funtion behind the unit. I have not removed the center console in some time so I can't remember, but come to think if it has probably been since then that my a/c has not worked (remoced it in Dec. and did not try to use it again until late May). Maybe I forgot to connect it or it came loose as I was re-installing it.....
Le Mans Master
Joined: Aug 2001
Posts: 6,213
Likes: 1
From: South Alabama
Originally Posted by DickieC.99
Where to start, what the check?
I'll assume you have dual zone since you talking about temp settings.
What you need to tell is WHAT READING is your outside ambient air temp showing!! Dual zone will give you certain low numbers if that sensor fails. Somewhere around 35 degrees or something like that...and if the head unit thinks it's below a certain temp outside it will NOT allow the A/C to run. You also have an internal temp sensor in the dash next to the ignition switch that needs to work.
My external sensor failed a couple of years ago due to corrosion at the sensor's plug and it read in the low thirties and the A/C would not run...didn't matter that it was really in the 90's and F'n hot outside. My mechanic buddy clued me into the default temp reading for a failed sensor. We changed the sensor and everything was fine.
You should also pull up your DIC codes and see if your car is trying to tell you what's wrong.
Thread Starter
Pro
Joined: Nov 2003
Posts: 682
Likes: 8
From: Alexandria VA
Originally Posted by Cajun99
Well for one thing it would help everyone if you described your problem more completely. Just saying that it won't come on doesn't help a whole lot.
I'll assume you have dual zone since you talking about temp settings.
What you need to tell is WHAT READING is your outside ambient air temp showing!! Dual zone will give you certain low numbers if that sensor fails. Somewhere around 35 degrees or something like that...and if the head unit thinks it's below a certain temp outside it will NOT allow the A/C to run. You also have an internal temp sensor in the dash next to the ignition switch that needs to work.
My external sensor failed a couple of years ago due to corrosion at the sensor's plug and it read in the low thirties and the A/C would not run...didn't matter that it was really in the 90's and F'n hot outside. My mechanic buddy clued me into the default temp reading for a failed sensor. We changed the sensor and everything was fine.
You should also pull up your DIC codes and see if your car is trying to tell you what's wrong.
I'll assume you have dual zone since you talking about temp settings.
What you need to tell is WHAT READING is your outside ambient air temp showing!! Dual zone will give you certain low numbers if that sensor fails. Somewhere around 35 degrees or something like that...and if the head unit thinks it's below a certain temp outside it will NOT allow the A/C to run. You also have an internal temp sensor in the dash next to the ignition switch that needs to work.
My external sensor failed a couple of years ago due to corrosion at the sensor's plug and it read in the low thirties and the A/C would not run...didn't matter that it was really in the 90's and F'n hot outside. My mechanic buddy clued me into the default temp reading for a failed sensor. We changed the sensor and everything was fine.
You should also pull up your DIC codes and see if your car is trying to tell you what's wrong.
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Thread Starter
Pro
Joined: Nov 2003
Posts: 682
Likes: 8
From: Alexandria VA
Ok, just got home and checked for codes and its not giving me any. I took the kick panel out and checked the interior sensor and it is connected. Is there any way to tell if it has gone bad by looking at it, or is its inexpensive enough that I should just go to the dealer and buy another one to test it out?
So here I am:
1) external temp sensor works
2) no codes
3) climate control unit (dual zone) connected and everything else besides A/C is working fine
4) interior temp sensor connected and looks
to be good
5)
So here I am:
1) external temp sensor works
2) no codes
3) climate control unit (dual zone) connected and everything else besides A/C is working fine
4) interior temp sensor connected and looks
to be good5)
Instructor
Joined: May 2004
Posts: 196
Likes: 0
From: leominster ma
When I told you that my ac had problems last week I did noticed that my outside sensor was reading 33 degrees with the car in park but still running and when I started to drive the outside temp went to it's correct reading and then the ac started to work again. I guess my outside sensor has problems.
