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Car Forum / Chevrolet / Chevrolet Malibu / July 2005Air conditioning
My AC does not come on - the switch is lit - I checked the relay according to the Haynes manual it is Ok. I also noticed that there is an AC compressor diode in the fuse box - anyone knows how to test this? Any other ideas why the compressor will not turn on? If the line pressure is low (i.e. leak somewhere), the compressor will not cycle. Head to the dealer for leak check and repair > My AC does not come on - the switch is lit - I checked the relay > according to the Haynes manual it is Ok. I also noticed that there is an > AC compressor diode in the fuse box - anyone knows how to test this? Any > other ideas why the compressor will not turn on? > If the line pressure is low (i.e. leak somewhere), the compressor will not > cycle. > snip > >>My AC does not come on - the switch is lit - I checked the relay >>according to the Haynes manual it is Ok. > snip The low pressure cutout switch is on the accumulator [ on my car ] Jumper the switch, and see if compressor starts, if it does, than you need a recharge. If no action, check power and ground at compressor clutch. Air conditioning Group: alt.autos.chevrolet.malibu Date: Wed, Jun 1, 2005, 8:35pm (CDT+1) From: jamosurespam@sympatico.ca (Klinger) My AC does not come on - the switch is lit - I checked the relay according to the Haynes manual it is Ok. I also noticed that there is an AC compressor diode in the fuse box - anyone knows how to test this? Any other ideas why the compressor will not turn on? For starters what year is your car? Both Low and High pressure will keep your compressor from comming on...Also no power going to the high pressure switch, also certian engine trouble codes....No signal comming from your control head even though its lit,, A faulty compressor,a faulty high pressure switch... How long has it been out? The compressors on these are known for leaking... S Cook 1999 Malibu v6 3.2 litre engine No trouble code showing. I used it once in April on a warm day and it worked. I park outside! Try this site - it worked for me. http://www.imcool.com/articles/aircondition/AC_ControllersAreRepairable.pdf Wes > My AC does not come on - the switch is lit - I checked the relay according > to the Haynes manual it is Ok. I also noticed that there is an AC > compressor diode in the fuse box - anyone knows how to test this? Any > other ideas why the compressor will not turn on? Re: Air conditioning Group: alt.autos.chevrolet.malibu Date: Fri, Jun 3, 2005, 8:12pm (CDT+5) From: wwwhitlock@ns.sympatico.ca (Wes Whitlock) Try this site - it worked for me. http://www.imcool.com/articles/aircondition/AC_ControllersAreRepairable.pdf Wes "Klinger" <jamosurespam@sympatico.ca> wrote in message news:bosne.27729$_r1.801797@news20.bellglobal.com... My AC does not come on - the switch is lit - I checked the relay according to the Haynes manual it is Ok. I also noticed that there is an AC compressor diode in the fuse box - anyone knows how to test this? Any other ideas why the compressor will not turn on? Good sight if this is the problem... A Diod has resistance on allowing current one way in order to tell if its good we need to know the color of the bands areoun the diode..this tells us the resistance factor... But not knowing weather or not it has charge is an issure... Sorry but there are no color bands on Diodes....onlt on resistors. Diodes have a Black band at one end or a picture of the diode sysmbol for correct orientation. Diodes are Very LOW resistance in the conductive direction and very HIGH in the non-conductive direction...period. As long as you do not exceed the PIV(maximum momentary voltage) or current it works like a one way valve. They are used to keep voltage between circuits separate You probably need to have it out of the circuit to test so there are no strange readings due to other components. If you can get it out, then use a multiVoltOhm meter. Set it to Ohms scale and you will read very high resistance in one direction and when you reverse the leads read very low. High or low in both directions and it is defective. >Re: Air conditioning > [quoted text clipped - 17 lines] >tells us the resistance factor... >But not knowing weather or not it has charge is an issure... Thanks for posting. I'm having a similar issue. I did the same thing last night. I took me about 30 minutes. It now works fine. Thanks for posting the information. J I got my ac fixed - the expensive and and hard way - I took to a local outfit that supposedly fixes Ac. The mech. told me that i was low on Freon and that he could not find a leak so he evacuated the system and put in a die to to find the leak in the future. The Ac worked on the way home -( $200 later) - When I went to use the car again it was not working - I took it back to these crooks - this time they discovered that the lower tube had burst. A new part and labour was another $200!! I was stuck between a rock and a hard place and got it fixed. If you live in Canada - not far from the US border -my suggestion is that it cheaper to go across the border - to a parts store buy the freon and fill it yourself. My question is can you overfill the freon in to the system? I suspect this is what happened the time first I got it filled. Tough lesson - do not take your car to a brake, , gas tank and muffler place in Ottawa who advertises that they will check your AC for $39.95 in Ottawa CA !!! |
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