Question Need some AC advice

[J_F250]

I have been measuring the temperature of the air out of the vents on my truck and I cannot get the temp to drop below 58*-60*. I sprayed off the condenser and no luck with it gettiing any colder. First where is the Low pressure port?
Second is what could be causing this other than low freon?

It has been 95* here in TN about everyday so I need relief.

 

[drmjf]

A/C OK

If you are getting a 30-35 degree temperature drop coming out of the vents.
Thats about the best you can expect from R134a.
Hope this helps.

 

[JLDickmon]

I have been measuring the temperature of the air out of the vents on my truck and I cannot get the temp to drop below 58*-60*. I sprayed off the condenser and no luck with it gettiing any colder. First where is the Low pressure port?
Second is what could be causing this other than low freon?

It has been 95* here in TN about everyday so I need relief.

low pressure port is on the accumulator

if you need to know for the reason I think you're thinking, STOP.

get the pressures checked first

I can help you, but I need to know what the pressures are and how steady the needles hold..

 

[CHPMustang]

Silly question but one I do ask,are you running the AC in "Norm" or "MAX AC" for when I have our Excursion in the "Norm" the temps will linger in the 50's with ambient outdoor temps in the 90's.

Have you installed a AC Control Valve for that is one mod that helps alot and the price sure is worth it

Other things to look at is to thoroughly clean the front condensor unit of bugs,dirt,leaves,etc,straighten out any bend fins.

Also a cleaning of the Evaporator with KOOL-IT EVAPORATOR & HEATER CORE FOAM CLEANER can help some too

 

[J_F250]

Silly question but one I do ask,are you running the AC in "Norm" or "MAX AC" for when I have our Excursion in the "Norm" the temps will linger in the 50's with ambient outdoor temps in the 90's

Have you installed a AC Control Valve for that is one mod that helps alot and the price sure is worth it

Other things to look at is to thoroughly clean the front condensor unit of bugs,dirt,leaves,etc,straighten out any bend fins.

Also a cleaning of the Evaporator with KOOL-IT EVAPORATOR & HEATER CORE FOAM CLEANER can help some too

Where is the evaporator? Those temps are in max ac.

 

[J_F250]

low pressure port is on the accumulator

if you need to know for the reason I think you're thinking, STOP.

get the pressures checked first

I can help you, but I need to know what the pressures are and how steady the needles hold..

Were you thinking I was thinking of buying one of those $20 cans of R134a with the gauges on them?
Yep I was at first but my brother (who works at a parts store) told me not to do it because they were not very good at measuring the amount of freon in the system because all systems are different. Actually I kind of wanted to smack myself for looking at those cans more than once. He also told me that is about as good as it gets with the temperature and I told him CHPMustang got his to 38*(?). If I go to a shop how much should they charge me to put it on a set of gauges?

 

[CHPMustang]

Where is the evaporator? Those temps are in max ac.

Evaporator is located in a large black plastic enclosure up against the right side of the firewall in the engine area,you'll follow the cold AC lines from the compressor to the case.
I remove the fan/blower to fill the enclosure with the cleaner foam on the evaporator surface.

 

[JLDickmon]

Were you thinking I was thinking of buying one of those $20 cans of R134a with the gauges on them?
Yep I was at first but my brother (who works at a parts store) told me not to do it because they were not very good at measuring the amount of freon in the system because all systems are different. Actually I kind of wanted to smack myself for looking at those cans more than once. He also told me that is about as good as it gets with the temperature and I told him CHPMustang got his to 38*(?). If I go to a shop how much should they charge me to put it on a set of gauges?

actually, I'd see if a parts store will rent you a set.

 

[J_F250]

Ok i will look at it today.

 

[J_F250]

actually, I'd see if a parts store will rent you a set.

Will do.