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213 Posts
could be clogged condesner fins (thing infront of radiator). If there is a lot of debri there then it'll start cold but as the refridge heats up, there is no air to cool it...so it will lose cooling capability.
I'de check the condenser first...
What else can cuase insufficient cooling you ask?
MANY...maaaaany things. If you have a set of gauges then you can diagnos this problem. If not then your SOL...this is cause there are so many things that could be wrong.
here's a few...kinda extreme to less extreme order
1 restriction in low side (need to repair line/part)
2 moisture in system (need to pull vaccum and replace refridg.)
3 air in sys (same as 2)
4 overcharge of refridg (same as 2)
5 overcharge of oil (same as 2)
6 clogged condenser fins
7 overheating engine?
if you need a flush then you shouldn't have to worry about over/under charge cause...you'll be replacing it. If you're doing it then you'll wanna make sure you pull a GOOD vaccum for 30 min...make sure it holds for 5-7min. If it don't hold you gotta leak...but since it actually cools at first...not too likely. Make sure you have enough oil and yet...not too much oil...this is of course for the compressor.
course if a tech is doing this for you then you shouldn't have to worry about that.
HICAS...piiiiiimp.
THat's all I've got
I'de check the condenser first...
What else can cuase insufficient cooling you ask?
MANY...maaaaany things. If you have a set of gauges then you can diagnos this problem. If not then your SOL...this is cause there are so many things that could be wrong.
here's a few...kinda extreme to less extreme order
1 restriction in low side (need to repair line/part)
2 moisture in system (need to pull vaccum and replace refridg.)
3 air in sys (same as 2)
4 overcharge of refridg (same as 2)
5 overcharge of oil (same as 2)
6 clogged condenser fins
7 overheating engine?
if you need a flush then you shouldn't have to worry about over/under charge cause...you'll be replacing it. If you're doing it then you'll wanna make sure you pull a GOOD vaccum for 30 min...make sure it holds for 5-7min. If it don't hold you gotta leak...but since it actually cools at first...not too likely. Make sure you have enough oil and yet...not too much oil...this is of course for the compressor.
course if a tech is doing this for you then you shouldn't have to worry about that.
HICAS...piiiiiimp.
THat's all I've got