Last post on Mar 05, 2012 at 10:02 AM
You are in the Chevrolet Malibu
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Chevrolet Malibu, Chevrolet Malibu SS, Heating / Cooling, Sedan
#2 of 151 AC compressor operation in defog/defrost
Nov 02, 2004 (7:20 pm)
Here's something that isn't explained well in the owner's manual:
It states that when you're in defog or defrost mode, the AC compressor will run automatically. When I set the mode selector knob to one of those positions, I seem to hear the compressor kick on -- but isn't the indicator light near the AC button supposed to light up?
When I turn the temp knob to the cold range the air from the defroster outlets definitely feels cold so I presume the compressor is running as it should, but I'm just wondering.
#3 of 151 Re: AC compressor operation in defog/defrost [beedublu]
Nov 03, 2004 (1:47 am)
I don't know if the indicator light observation is an actual problem with your Malibu. I will have to check ours. I do think the same situation exists with one of our other vehicles, a 2002 Kia Sedona.
This is undesirable. If the AC is running, the light should be on.
#4 of 151 Re: AC compressor operation in defog/defrost [beedublu]
Nov 03, 2004 (8:54 am)
In my Malibu, with the windshield defroster on, the a/c compressor runs & the a/c light is on.
#5 of 151 Re: AC compressor operation in defog/defrost [beedublu]
Nov 03, 2004 (4:42 pm)
I know that implementation of the A/C Compressor LED isn't done consistently across vehicles.
Some vehicles have LED turn ON whenever A/C compressor is ON.
With other vehicles it only turn ON when the customer has requested A/C to be ON. It doesn't turn ON if the vehicle itself decides A/C needs to be ON.
Believe it or not this is sometimes a marketing call.
I will post back on subject when I get some more details.
#6 of 151 Re: AC compressor operation in defog/defrost [beedublu]
Nov 03, 2004 (6:15 pm)
On my Maxx LS (manual A/C) the A/C LED turns on whenever the compressor is on. It does not matter if you manually turn on A/C (when in floor and/or dash mode) or if it automatically turns on when you select defog/defrost mode.
When in floor and/or dash, the body control module remembers your last A/C request forever, until you change it. There were several times when I thought the A/C was not working and I then realized I had to turn on the compressor. Now I always check the LED to make sure it is lit when I want the A/C on.
#7 of 151 AC Problem I think!!!!
Feb 07, 2005 (5:46 pm)
Srry that post b4 I hit enter on accident! New Keyboard! I noticed today when I was fixing to drive my 2002 Chevrolet Malibu home from work that when I pushed the AC button on, and pushed the Recirculation button on that the AC was cutting itself on and off... I noticed when I looked on the RPM gauge on the left it was going up and down abnormally like it was skipping! Well I know it wasn't because I just got the car 2 weeks ago on monday 3rd week having it. I looked down and told my passenger to look, and sure enough the little green light was not exactly flashing but was comming on and off and I noticed that the RPM guage went down when light came on and when it went off it went up... I guess im screwed for this car, its financed till '09 and wondering becuase I already have a radio problem like I said from earlier posting and this cars not got but 32 thousand on it. Does anyone know why the AC was going on and off like that?! Then after I tried it a 3rd time it stayed on and then I eventually just turned it off a minute later because I was scared something maybe shorting out or whatnot! E2helper or ANYONE whos ever experienced this please let me know!!! Also if anyone knows why my back speaker was going in and out erratically while driving let me know too, I took it in on saturday and had the radio repair guy look at it, since he looked at it the radio speaker hasn't acted up but my right front door speaker is not working period!
if anyone out there who knows anything on these two subjects let me know I am worried this car maybe falling apart on me!
#8 of 151 Re: AC Problem I think!!!! [jason992477]
Feb 08, 2005 (5:09 am)
I'm with chrpai on this. My '97 did the same thing, and it only got worse with time. It never caused an issue as far as worries over shorting or other electrical problems. We did find that it actually does cut the A/C completely off when it goes out though. I'd be driving down the road on a 95+ F day with the A/C going and suddenly stop feeling cool air. When we looked down, sure enough the light had gone out.
As far as the cost to fix it goes, I have no idea, because I traded the car off in 2003 without ever having fixed the issue. The problem had been happening for about a year, and I had already decided it was cheaper to just keep turning the thing back on when it cut off than replacing the control head, especially after discussing it with my local Chevy dealer's service department.
#9 of 151 Re: AC Problem I think!!!! [jerrywimer]
Feb 08, 2005 (8:47 am)
My system had the blinking A/C light again after the unit was replaced. The second time around it also got the fan speeds 1 and 2 stop working problem. There was also something with my system that when the A/C cut out the air smelled stale. So I knew immeadiatly when the system kicked out. I'd then cycle the fan off and on then hit the button to turn the A/C back on.
I drove 45 minutes to work and sometimes I'd have to do this several times in a row and sometimes i wouldn't have to do it at all.
I traded the car in and didn't disclose the problem. I figured the dealer ought to be expecting it to be broke anyways as common as this problem was.
#10 of 151 Climate control problem - buttons on console
Jun 08, 2005 (12:18 pm)
My Malibu has a problem where I have to constantly press the AC button intermittantly. It goes off by itself.
Same thing happens with the recirculate button. Button goes off and switches to the other mode.
If I stick a coin under the button to hold it in on the on position it stays most of the time.
I took the climate control unit off and made sure the vacumn hoses were on securely.