A/C temp

[blacktbird]

It has been getting pretty warm here lately and I have been using the A/C more. It doesnt seem like it is getting as cold as it should. I thought that it might be low so I went and bought a set of guages. They say that the system is filled to the proper amount. The compressor is running constant. Not sure if that is right or not. I also noticed that under WOT the A/C will get warm. Any help would be greatly appreciate.

P.S.
I check the system with th car running and the and the A/C on Max Cool

Thanks,

Chris

 

[driller]

[div class="dcquote"][strong]Quote[/strong]
... I also noticed that under WOT the A/C will get warm. [/div]

Chris, it is normal for the AC compressor to 'kick out' under WOT.

 

[steve]

Under WOT or in most cases even less then that, the compressor clutch disengages to protect the compressor and give you more power. Every car I ever owned was like that.

Did your clean you condenser coils as well?

 

[blacktbird]

If I use a digital thermometer to check the temp comming out of the vents about what range should it be?

 

[logres]

I've been told it should be 60 degrees.

 

[sleeper]

it's not a set temperature, it's a set temperature drop. And efficiency of R134a falls off at extremely high temperatures. This is a problem when designing A/C systems for military trucks in Iraq, but probably not the problem here.

Go to autozone, buy the kit that has the low side pressure gauge, turn on the a/c and check the pressure. if it's low, add a little refrigerant. I did that last year, i think i may have to do it again now.

 

[driller]

[div class="dcquote"][strong]Quote[/strong]
it's not a set temperature, it's a set temperature drop.
[/div]

http://mark8.org/users/driller/pics/AC test.jpg

Looks like 35-45 would be normal for 60-90 degree ambient temps.

 

[logres]

[div class="dcquote"][strong]Quote[/strong]
it's not a set temperature, it's a set temperature drop. And efficiency of R134a falls off at extremely high temperatures. This is a problem when designing A/C systems for military trucks in Iraq, but probably not the problem here.Go to autozone, buy the kit that has the low side pressure gauge, turn on the a/c and check the pressure. if it's low, add a little refrigerant. I did that last year, i think i may have to do it again now.
[/div]

If you have air in the system, the gauges are useless.