A/C damper problem?
06-05-2018, 04:35 AM
#1
Melting Slicks
Thread Starter
A/C damper problem?
I'm out of ideas, I had a small refrigerant leak and added some stop leak, then topped off charge, not very cold.
Tonight I took out refrigerant and evacuated with a vacuum pump and weighed in 1.5 lbs R134a, as the sticker on the car says, 1 pound and 8 ozs.
Test drive, A/C isn't very cold, so I got car up on ramps, looked at condenser and radiator, took top panel off with air filter bridge and washed condenser and radiator the best I could.
Also verfied both radiator fans are running, took for another test drive after 1 am, 80 F out now, and best it put out was about 62 F.
I ran codes and zero in HVAC current or history, could those damper doors or whatever they are called be mixing heat with A/C?
For kicks I turned driver and passenger ***** to hot and back to cold to see if that did anything, nothing.
If I can't get it going cold like it once did when I first got car in 2003, it had pretty kick *** A/C, I'll have to park it for summer and drive my hoopty grand am.
Phoenix is too hot for subpar A/C, any ideas?
Tonight I took out refrigerant and evacuated with a vacuum pump and weighed in 1.5 lbs R134a, as the sticker on the car says, 1 pound and 8 ozs.
Test drive, A/C isn't very cold, so I got car up on ramps, looked at condenser and radiator, took top panel off with air filter bridge and washed condenser and radiator the best I could.
Also verfied both radiator fans are running, took for another test drive after 1 am, 80 F out now, and best it put out was about 62 F.
I ran codes and zero in HVAC current or history, could those damper doors or whatever they are called be mixing heat with A/C?
For kicks I turned driver and passenger ***** to hot and back to cold to see if that did anything, nothing.
If I can't get it going cold like it once did when I first got car in 2003, it had pretty kick *** A/C, I'll have to park it for summer and drive my hoopty grand am.
Phoenix is too hot for subpar A/C, any ideas?
06-22-2018, 11:17 PM
#3
Melting Slicks
Thread Starter
Ok, today was first time getting a chance to check, car in garage with ambient temp 103-105 F during my testing, engine fully warmed up (198F)and both fans on low speed my suction pressure is 85 and 220 on high side.
With a pretty decent fan on high in front of car 85 low side 195 high side.
The pressures are the same at idle, 1500 and 2000 rpm.
I was reading it could be a bad compressor or bad compressor control valve.
Also thinking it's not a fan issue as it doesn't cool good going down the road.
With a pretty decent fan on high in front of car 85 low side 195 high side.
The pressures are the same at idle, 1500 and 2000 rpm.
I was reading it could be a bad compressor or bad compressor control valve.
Also thinking it's not a fan issue as it doesn't cool good going down the road.
Last edited by 1999corvettels1; 06-22-2018 at 11:19 PM.
06-22-2018, 11:56 PM
#4
Burning Brakes
Those pressures are OFF... and should change with RPM increase, esp the high side..
At your high temps I would expect to see about 35-45 on low side.. And 225 ish on the high side..
It sounds like you have a weak compressor to me.
At your high temps I would expect to see about 35-45 on low side.. And 225 ish on the high side..
It sounds like you have a weak compressor to me.
07-09-2018, 03:40 PM
#5
Melting Slicks
Thread Starter
Anyway to tell what color orifice tube without opening up the system?
Looking at rockauto at 4 seasons new compressor kit that includes drier, orifice tube, there are 2 package options.
Looking at rockauto at 4 seasons new compressor kit that includes drier, orifice tube, there are 2 package options.
11-09-2018, 04:50 PM
#9
Melting Slicks
Thread Starter
Plugged suction port, also orifice tube was plugged, will be flushing lines and evaporator coil, new condenser, compressor, drier, etc.
11-09-2018, 08:09 PM
#10
Melting Slicks
Thread Starter
This is flush solvent in a empty water bottle, see some crud that sunk to the bottom. It's near impossible to capture the solvent, most went all over the place and puddled under car.
11-10-2018, 09:17 AM
#11
Melting Slicks
Now that you're working on it, what color did it have installed? Does it match the information above?
97-99:
00-04:
.
Last edited by GCG; 11-10-2018 at 02:17 PM.
04-30-2019, 01:59 PM
#12
Melting Slicks
Thread Starter
The white one has the tangs on the end with the screen, the yellow has the tangs on the opposite end.
https://www.corvetteforum.com/forums...fice-tube.html
Last edited by 1999corvettels1; 04-30-2019 at 02:02 PM.
04-30-2019, 04:37 PM
#13
Melting Slicks
You really surprised me with a reply after almost 6 months!!! 
I had to read the thread again, but I appreciate it. I hope everything went well and that it's up and running. Thanks! 
I had to read the thread again, but I appreciate it. I hope everything went well and that it's up and running. Thanks!
04-30-2019, 05:42 PM
#14
Melting Slicks
Thread Starter
Was looking up pictures in my old threads with the crud that clogged up my A/C, to show somebody asking about A/C Pro.
Searching for the pictures, I saw that I missed your question somehow, so I answered. Lol
It's cooling pretty good now.
Searching for the pictures, I saw that I missed your question somehow, so I answered. Lol
It's cooling pretty good now.