Recharge
- Thread starter Origommi
- Start date
H What 4.6
New Member
- Jul 29, 2005
- 56
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my A/C did not work when i bought my car a year or so ago and just last week i brought it by my friends shop and evacuated the system and recharged it r134a to 2 pounds 2 ounces, everything was good, turned on the A/C to try it out, blew freezing cold, then i noticed a hose was leaking the slightest bit of refrigerant.... I had to evacuate it again!!! i have a small gash and the new hose is costing me $140. waiting for it now.
anyway yea i evacuated and charged and it was working great..... you probally have another problem
anyway yea i evacuated and charged and it was working great..... you probally have another problem
first thing is you need to see if the compressor tunrs on when you put the a/c on.. ( you can tell if it's on by the clutch spins with the pulley)
if it does not activate the clutch when you turn the a/c on, then most likely it's low on freeon and you have a leak. the system protects itself by not allowing the compressor to operate with low freeon..
if you want you can jump the a/c cycling switch ( located on the low side near the acculator) with the stichd jumped you can see if the a/c gets cold.. but be carefull when doing this because you can freeze the evap core or do damage to the compressor.
to be honest A/C work is best left to pro's most backyard guys don't have the equipment for testing and recovery and recharging that we have, plus modern A/C systems are tied into the PCM and the one on our cars uses the CCRM ( constant control relay module) to control the cycling of the A/C
if it does not activate the clutch when you turn the a/c on, then most likely it's low on freeon and you have a leak. the system protects itself by not allowing the compressor to operate with low freeon..
if you want you can jump the a/c cycling switch ( located on the low side near the acculator) with the stichd jumped you can see if the a/c gets cold.. but be carefull when doing this because you can freeze the evap core or do damage to the compressor.
to be honest A/C work is best left to pro's most backyard guys don't have the equipment for testing and recovery and recharging that we have, plus modern A/C systems are tied into the PCM and the one on our cars uses the CCRM ( constant control relay module) to control the cycling of the A/C
svttech76 said:
After looking at all of this, it's pretty obvious that my system is low on freon. I have verified that the car is trying to cut the compressor on, but then it immediately cuts back off causing that erratic idle that happens when the clutch engages and disengages.
I simply want to verify that the service port that I'm going to use is the low-pressure port. The one that I assume is it is located on the passenger side, close to the firewall.
I completely agree Mike.I recently took my car to my mechanic to look atsvttech76 said:
my A/C compressor and system because my car was blowing only warm air
out.He took it apart just to find I had two holes in my seal and the clutches
were worn out.Needless to say I had to install a brand new Motorcraft A/C compressor
and recharge the system.I even had a leak test done on my car.
Cantslowdown
New Member
Mike thats no joke there is a guy that drove in his truck he jumped it like that and tryed to drive around and missed up his hole a/c unit..
blackfang
Founding Member
Plus another thing some of the backyard guys may not know, if there hasnt been freon in the system at all for a period of time, you might want to hold off on pulling a vacuum and charging it. Replace the receiver dryer aka accumulator(sp) then recharge it.
I dont wanna take over someones tread, but I notice that someone said that the a/c system protects itself when it is low on refrig. Well about a month ago I notice my ac was got cold/warm/cold/warm and now its warm all the time. I took it to a local shop to get my system rechared (I figured it was low on refrig.) and they said the my compressor was bad because the clutch would not stay engauged, and gave me a quote of about $700 to fix it....could it be engauged and disengauging because it is low?
Thanks
Thanks
roman said:
Hard to say (in my non-professional opinion) but adding a can of freon can't hurt, especailly if your 'compressor is bad' anyway. Give it a shot, if nothing else, get a can of that flourescent stuff (that you use the light to see where/if it's leaking anywhere), and try that.
Someone will let you know if my advise is trash. :SNSign:
While I'll agree that adding 1 can can't hurt the car, it can hurt you pretty bad. Do yourself a big favor and don't mess with freon until you can answer "Yes" to these 2 questions:
(1) Do you know how to find the low pressure (a.k.a. suction) service port on any car A/C system?
(2) Do you know how to protect yourself from common freon accidents?
Hint for #2. If just one drop of liquid freon comes in contact with your skin . . . instant frostbite (some permanent dead skin cells) . . . not so bad. If the location happens to be on you eyeball, frostbite is permanent vision damage.
You not be as lucky as the last guy was.
Pay attention to Mike's (svttech76) advice. He has nothing to gain or lose, so has your best interest in mind. And he has tons of experience to boot.
(1) Do you know how to find the low pressure (a.k.a. suction) service port on any car A/C system?
(2) Do you know how to protect yourself from common freon accidents?
Hint for #2. If just one drop of liquid freon comes in contact with your skin . . . instant frostbite (some permanent dead skin cells) . . . not so bad. If the location happens to be on you eyeball, frostbite is permanent vision damage.
You not be as lucky as the last guy was.
Pay attention to Mike's (svttech76) advice. He has nothing to gain or lose, so has your best interest in mind. And he has tons of experience to boot.
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