No A/C on either side?

nghtshd88 · Post by **nghtshd88** » Thu Jun 02, 2016 1:46 pm

Yes I have a full charge about 35psi on the low side and has held for 2 weeks so not leaking. Line is ice cold under the hood but neither side of the car is blowing any cold air. The heater control seems to be working fine as I can blow room temp air on the coldest setting and blasting heat on fully warm when its room temp outside. So I would assume the actuator doors are working.

Is there a 3rd door somewhere or one specifically for the A/C?

Just to be clear I have zero cold air coming from the floor or defrost vents either.

96 SSEi · Post by **96 SSEi** » Thu Jun 02, 2016 1:53 pm

hi, when ac is on, can you see the compressor engage and spin?

nghtshd88 · Post by **nghtshd88** » Thu Jun 02, 2016 2:42 pm

?? How can the line be cold without it spinning lol yes.

96 SSEi · Post by **96 SSEi** » Thu Jun 02, 2016 4:17 pm

nghtshd88 wrote:?? How can the line be cold without it spinning lol yes.

i ASSUMED your line cold was while charging low side

did you check fuses/relays and you sure you pushed the ac button....lol - have to ask

nos4blood70 · Post by **nos4blood70** » Thu Jun 02, 2016 8:21 pm

Does the car have auto or manual climate controls?

SATADrive420 · Post by **SATADrive420** » Thu Jun 02, 2016 8:40 pm

Maybe the EVAP core is blocked. Try inspecting the ductwork and the actuators.

RJolly87 · Post by **RJolly87** » Thu Jun 02, 2016 9:31 pm

Are both lines going to the evaporator cold, or just one? What are the high side pressures running at?

I believe the system pulls all of the air through the A/C evaporator, and the temperature control then either passes it straight on, or diverts through the heater core.

Did you charge the system from full vacuum? If so, how much refrigerant was added?

AJT2004 · Post by **AJT2004** » Fri Jun 03, 2016 10:23 am

You should get an A/C manifold gauge set to check both high and low side pressure readings. You may still be low on refrigerant and/or the compressor is shot.

agrazela · Post by **agrazela** » Fri Jun 03, 2016 11:11 am

As has been said, without a high side reading we can't know if the compressor is compressing.

Post by **Archon** » Fri Jun 03, 2016 12:34 pm

These are the pressures that you should be seeing:

[The extension gif has been deactivated and can no longer be displayed.]

nghtshd88 · Post by **nghtshd88** » Mon Jun 06, 2016 3:31 pm

"Are both lines going to the evaporator cold, or just one?"

Only the low pressure side is. Have not had a chance to check high pressure side yet. But does this mean there is a blockage or its not compressing since the side coming out is warm?

Both actuator doors are turning fine. From what I know there are only 2 and third diverter not including the recirculate.

RJolly87 · Post by **RJolly87** » Mon Jun 06, 2016 6:36 pm

Both lines going to the evaporator past the expansion valve are low side, and I would expect both to be cold if the system is working properly.

pepper65251 · Post by **pepper65251** » Mon Jun 13, 2016 9:20 pm

i ran into the same problem today. I checked the freon pressure and it was at 60 psi. i thought it was too high so i let some out until it was within range on my gauge. and i lost the drivers side cold air, passenger side was very cold and driver was outside temp. done some research on the web and everyone said it was low on freon. so i put in another can and the pressure was up to 65 psi and checked the drivers side was cold now.

RJolly87 · Post by **RJolly87** » Mon Jun 13, 2016 10:05 pm

Unless it is 60* outside and the system is not running, or the system is running and you manage to park on the surface of the sun, you shouldn't be seeing 60psi on the low side while running, and there is likely an issue that needs to be addressed.

pepper65251 · Post by **pepper65251** » Tue Jun 14, 2016 7:12 am

So tell me what is the issue?

RJolly87 · Post by **RJolly87** » Tue Jun 14, 2016 7:40 am

There is no way to determine what the issue with the current info. I would need to see what the rest of the system is doing, especially high side pressure.

MKMike · Post by **MKMike** » Tue Jun 14, 2016 11:07 am

pepper65251 wrote:i ran into the same problem today. I checked the freon pressure and it was at 60 psi. i thought it was too high so i let some out until it was within range on my gauge. and i lost the drivers side cold air, passenger side was very cold and driver was outside temp. done some research on the web and everyone said it was low on freon. so i put in another can and the pressure was up to 65 psi and checked the drivers side was cold now.

65 psi on the low side can still be too low if the reading is taken without the ac running.
It's called a static reading in the handy article I've linked below:
https://axleaddict.com/auto-repair/DIY- ... by-Symptom

The running pressures are listed on the chart RJolly87 posted.

As you can see, the readings are very different when the system is running.
Hope that clears up any confusion.

PontiacBonnevilleClub.com

PontiacBonnevilleClub.com

No A/C on either side?

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