A/C Question (1 Viewer)

[timer00]

My A/C does blow ice cold and works in the typical way but as the A/C button is on and its on any fan setting, I'll stand in front of the engine it'll click on I guess its the compressor every minute or so and then run for about 30 secs and then go off and 1 minute later come back on again and so on.

I am in no way a A/C guru so whats my possible culprit here?

 

[fourtrax]

sounds like it is low on freon. it will cycle on and off during normal operation which will very due load on the unit. the 94's use r134a, so it not hard to find.

 

[timer00]

Cool thanks

 

[Tools R Us]

My A/C does blow ice cold and works in the typical way but as the A/C button is on and its on any fan setting, I'll stand in front of the engine it'll click on I guess its the compressor every minute or so and then run for about 30 secs and then go off and 1 minute later come back on again and so on.

I am in no way a A/C guru so whats my possible culprit here?

That's normal operation for a low temp environment. If it ran all of the time in cool weather, the evaporator would freeze into a solid block of ice.

 

[CJF]

sounds like it is low on freon. it will cycle on and off during normal operation which will very due load on the unit. the 94's use r134a, so it not hard to find.

Curious as to why you would say his symptoms point to low refrigerant charge?

 

[fourtrax]

i didn't gather any facts about tempature or system run time, and jumped to worst case but, to answer CJF question as i see it.

a compressor can often short cycle when it is low on freon, basically as the gas compresses the pressure drops which can cause the low pressure switch to shut off the compressor, then as the gas expands coming out of the evapartor the pressure will even out or rise enough to reset the low pressure switch which causes the compressor to kick back in. starting the cycle over.

 

[Tools R Us]

i didn't gather any facts about tempature or system run time, and jumped to worst case but, to answer CJF question as i see it.

a compressor can often short cycle when it is low on freon, basically as the gas compresses the pressure drops which can cause the low pressure switch to shut off the compressor, then as the gas expands coming out of the evapartor the pressure will even out or rise enough to reset the low pressure switch which causes the compressor to kick back in. starting the cycle over.

Yes, but this,

My A/C does blow ice cold and works in the typical way ...

doesn't usually equal low freon, so isn't relevant to the posters "problem"?

 

[timer00]

Yes, but this,



doesn't usually equal low freon, so isn't relevant to the posters "problem"?

Ok maybe I should clarify.. it does blow coldish but not ICE cold. I have it getting checked out this Friday so i'll see what they can find.

Thanks for all the opinions though