Ac condenser replacement

[Trkdrvremt]

Check the fan clutch,make sure recirculation is on. Report the pressures.

Already returned the gauges and pump...
Iirc low was about 35 and high was 170... I should have taken a picture.... [emoji20]

 

[littleblazer]

At idle? If so you may just need a little more freon

Edit: What was the ambient temp?

 

[Mooseman]

Was the accumulator cold? Was the compressor running steady or cycling? Was it the same temp on both sides (driver/passenger)? Maybe a blend actuator is defective. Did you go by weight for adding the refrigerant? And do check the fan clutch operation. Link in my sig on how to test.

 

[Trkdrvremt]

Was the accumulator cold? Was the compressor running steady or cycling? Was it the same temp on both sides (driver/passenger)? Maybe a blend actuator is defective. Did you go by weight for adding the refrigerant? And do check the fan clutch operation. Link in my sig on how to test.

Ok this is what I found today...
Temperature is pretty even both sides.
Acumulator gets cold.
Compressor cycles during start up and when reving at 2k rpm, otherwise stays on steady. I did the best I could with trying to measure the 1.8xx lbs it needs. I put in two 12oz cans. One was straight freon the other was 12 freon and 3oz of dye.
Oh and the idiot gauge I have for filling shows 30 today when the compressor is steady and jumps from 35 to 50 when cycling...
Temperature today is 57 and 96% humidity..
Is my answer here fan clutch?

P.S also my math conversion sucks so maybe I still don't have enough freon yet...
Is 1.8 lbs = 1lb 8oz?

 

[littleblazer]

It's too cold to check accurately. It is preferable to be at least 75 degrees to check. What is the air out the vent today? Mine was 38 at 63 degrees on speed 1. Just as an example.

 

[Trkdrvremt]

It's too cold to check accurately. It is preferable to be at least 75 degrees to check. What is the air out the vent today? Mine was 38 at 63 degrees on speed 1. Just as an example.

Wow! Thats cold... Got it down to 50 on high... But only ran it for about 10 minutes.

 

[littleblazer]

Wow! Thats cold... Got it down to 50 on high... But only ran it for about 10 minutes.

I drove mine about a quarter mile down the road. 50 on high idling in heat is good. When it's only 60 outside, not so much. Mine will creep to about 55 in the driveway on max, once I'm moving it'll get down to low 40s 80 ambiant and maintain it in traffic. It sounds like you may need a little more freon. 2 12 oz cans is is only about 1.5 lbs. It may just need some more. Do check the clutch first though. It's free to test. [emoji2]

 

[Robbabob]

.8 X 16 = 12.8 ounces

You are 4.8 ounces shy of full.

Edit: Doing all the math, you put in 24 ounces and need 28.8 for a full charge.

 

[c good]

Did you add any oil to the system?

 

[Trkdrvremt]

Yes 2oz in acumulator and 2 oz in condenser.

 

[c good]

OK....that's perfect. How is it working now? Ambient temp vs. temp at vents?

 

[Trkdrvremt]

Last 2 days have been rain and 60's so I really haven't used it. Also haven't added any more freon yet either..

 

[Trkdrvremt]

Ok update.... 77 outside still 60 inside... Compressor only cycling when rpms are raised otherwise its on constantly. Pressures are 40 low 200 high.

And I added about 6 more oz of freon...

 

[Mooseman]

Sounds about right. What's the temperature out the vents?

 

[Trkdrvremt]

60 out the vents

 

[Mooseman]

Checking this pressure/temperature chart, seems to be right. Is the fan clutch running right? With A/C on, it should be pulling more air than when freewheeling. Check my sig for a way to test it.

When running the A/C while testing, did you set it to recirculate? Maybe it's just sucking a lot of hot air from the engine. Did you try it while driving? At such a mild temperature, it should have no problem getting cold. Maybe try resetting the A/C system by pulling the HVAC B fuse for 30 seconds, put it back, turn the key to Run but don't start. Leave it for a few minutes while it calibrates itself. Maybe the actuators just need to be reset or one is failing.

 

[Trkdrvremt]

Checking this pressure/temperature chart, seems to be right. Is the fan clutch running right? With A/C on, it should be pulling more air than when freewheeling. Check my sig for a way to test it.

When running the A/C while testing, did you set it to recirculate? Maybe it's just sucking a lot of hot air from the engine. Did you try it while driving? At such a mild temperature, it should have no problem getting cold. Maybe try resetting the A/C system by pulling the HVAC B fuse for 30 seconds, put it back, turn the key to Run but don't start. Leave it for a few minutes while it calibrates itself. Maybe the actuators just need to be reset or one is failing.

Ok.. While trying to check the fan clutch with the ac on I could not get it to stop at all.. Without the ac on it would stop and I felt no tugging.
While driving it got as low as 55-58...
Tomorrow I will try the reset.

 

[Trkdrvremt]

No change with pulling the fuse....

 

[littleblazer]

Do me a favor, pull off the front bumper clip and using a garden hose and the a/c on high, hose the condenser down for a few minutes and recheck the temps. They should drop down.

Edit: the grille not the actual bumper. Sorry.

 

[Trkdrvremt]

Lol I knew what you meant...
No change in temperature with the hose on it for about 15 minutes

 

[littleblazer]

Is there a temperature change drivers to passengers side?

 

[Trkdrvremt]

Nope stays steady at all vents.

 

[littleblazer]

You have the pressure gauges?

 

[Trkdrvremt]

Yes

 

[littleblazer]

Get a high and low readout at 1500 rpm and well as ambient temps please. Should show a larger picture.

 

[Trkdrvremt]

About 72 degrees.. Not sure why its so different today..

Thats at 1500 rpm

 

[littleblazer]

Those readings are like spot on. Give me a minute to go check mine.

 

[littleblazer]

1500rpm 43 out the vent. Your high is good but not your low... is your compressor cycling?

 

[Trkdrvremt]

Yes..
I have a quick video clip of it cycling on my phone but can't upload it

 

[littleblazer]

Was the low droping to 20 then rising then coming down again?

 

[Trkdrvremt]

Was the low droping to 20 then rising then coming down again?

Yes

 

[littleblazer]

Thats weird. You should've been getting atleast 50 out the vent. More like 45. Do you happen to have a cabin air filter? I'm mobil and don't see vehicle info.

 

[Trkdrvremt]

Thats weird. You should've been getting atleast 50 out the vent. More like 45. Do you happen to have a cabin air filter? I'm mobil and don't see vehicle info.

Yes I put the cabin filter in sometime the end of jan beginning of feb.

 

[littleblazer]

Pull it out and see if it's pluged. May be a lack of flow. Recheck. Otherwise I don't know.

 

[Trkdrvremt]

I'll try it but the flow is really strong....

 

[littleblazer]

It's hard to say, since it isn't warm enough out to properly test, the readings may be off. The other thing I would check is to make sure the recirculate door is operating. Lift the lever to open the glove box fully and hit the button. The door is, if you're at eye level, straight ahead and up a little on the fire wall. I mean the charge seems good, but it's hard to check readings below 75. 80 and up is ideal because as temps increase the pressures change alot and it's easier to pinpoint the problem. If the flow across the... evaporator coil I believe, isn't enough it won't cool properly and freeze and such. Do you happen to know what the temps were before?

 

[Texan]

Am I confused? Trkd high reads 150 psi. Little high reads 200 psi.
High side should be at least 200 psi at 80 F.
I think that you are still low on Freon.

 

[littleblazer]

A rule of thumb I was told is that high side should be around 2x the ambient temp. That being said it is a measure of how efficiently it is working. Higher high side = less efficient if I remember correctly.

Here are some readouts from the trailblazer at idle, vent temp around 45 degrees:


Here they are from the envoy with similar performance:


The difference is that the envoys high at 1500 rpms is 250 and it cycles. It's hard with so many variables, but being in the street and tested 2 minutes apart is abut as close as it gets. Each car took about a minute or two to reach 50. Then the engine was revved. A/c is tricky.

Edit: When you added the extra Freon did the temps decrease some? I agree with you Texan, I misread the readout in the picture somehow. You may still need a slight bump.

 

[Trkdrvremt]

No change in temp with adding the 6 0z...

 

[Trkdrvremt]

It's hard to say, since it isn't warm enough out to properly test, the readings may be off. The other thing I would check is to make sure the recirculate door is operating. Lift the lever to open the glove box fully and hit the button. The door is, if you're at eye level, straight ahead and up a little on the fire wall. I mean the charge seems good, but it's hard to check readings below 75. 80 and up is ideal because as temps increase the pressures change alot and it's easier to pinpoint the problem. If the flow across the... evaporator coil I believe, isn't enough it won't cool properly and freeze and such. Do you happen to know what the temps were before?

Well this week should be 80's...
I have no idea what temps were before due to the ac not working because of the hole in the condenser.