KinesthesiaDrums
NAXJA Forum User
- Location
- Minot, ND
i tired searching for solutions here, and through google for anything anywhere else on the net and came up short everywhere.....so here's my story and my delima...
1990 Loredo 4dr, 4.0L, AW4, 2wd
been fighting with the A/C and vacuum leaks for quite some time now....i've gone through through basically every part of the ac, replaced the condensor about 2 years ago, had the system retrofitted for 134a (got completely new compressor ties, not little screw on adaptors) after this the system was still not as cold as it should be... this past winter pulled the dash out to completely redo all the wiring, had been wondering if my evaporator was insainly clogged or leaky so i pulled it, cleaned it out and pressure checked it (all good..)tried to recharge the system then with the help of my dad who designs and test huge ac systems for commercial buildings, and after about the 3rd or 4th can we finally decided that was enough freon....it wasn't charging right for some reason so thats why we kept going. while driving that night i eneded up blowing the burst disk on the bottom of the dryer which resulted in coating the underside and passenger side of my jeep in oil. a very large amount of oil at that. sooo...dad said there must be a clog somewhere in the high pressure lines. so today i installed a new expansion valve and dryer. i had pressure on both lines that i took off the front side of the expansion valve which i thought to be quite odd seeing as i never recharged the system after it... "blew its load"....and how i got a discharge of BOTH lines...so i figured the valve was where the clog was. when i got to the dryer i took the bottom line off first...which of course had some pressure on it as well!!! the top line was empty though. all 3 of this lines that still had a charge had a LOT of oil that came out....
so i just cleaned everything up and put it all back together....put a vacuum on the system for about 30 minutes then proceeded to add refrigerant with the cans i picked up earlier. now, these cans i asked the guy at the store for, and these are what he grabbed for me....at a glance it all looked like the right thing....after about the 2nd can i began to get very supicious as to why the compressor hadn't kicked on yet, and why i wasn't getting barely any pressure reading on the high side.....thats when i noticed the cans were NOT refrigerant......yea...thats right, the were OIL CHARGES....and knew right away that this was bad. especially with the amount of oil that appeared to already be in the system.
so i wipped out the trusty FSM to see what the recommended amount was and what to do in the amount of adding too much. book says 6oz. i put TWO 8.5oz cans in. PLUS what all was already in the system.
and all i can find about putting too much oil in is "don't do it". and that it will cause the air to not chill completely or properly. which explains why my air wasn't as cold as i thought it should be a while ago...
SOOO i went and picked up 3 cans of REFRIGERANT....and put them in the system...things went normal then, compressor kicked on after about 1/2 a can, and lines started getting cold or hot depending on which they were. after the 2nd can i went inside to feel the air.........not as cold as it should be......chilled, yes. but not as cold as some systems i've experienced as of late. added part of the 3rd can, low pressure gauge reads about 27-28 PSI. dad says to keep an eye on it tomorrow and see if it freezes up....
so here's my question to you guys. how to i get all this extra oil out?!? is there any decent way? is it even possible without completely disassembling the entire system and blowing it all out?
...thanks in advance!
1990 Loredo 4dr, 4.0L, AW4, 2wd
been fighting with the A/C and vacuum leaks for quite some time now....i've gone through through basically every part of the ac, replaced the condensor about 2 years ago, had the system retrofitted for 134a (got completely new compressor ties, not little screw on adaptors) after this the system was still not as cold as it should be... this past winter pulled the dash out to completely redo all the wiring, had been wondering if my evaporator was insainly clogged or leaky so i pulled it, cleaned it out and pressure checked it (all good..)tried to recharge the system then with the help of my dad who designs and test huge ac systems for commercial buildings, and after about the 3rd or 4th can we finally decided that was enough freon....it wasn't charging right for some reason so thats why we kept going. while driving that night i eneded up blowing the burst disk on the bottom of the dryer which resulted in coating the underside and passenger side of my jeep in oil. a very large amount of oil at that. sooo...dad said there must be a clog somewhere in the high pressure lines. so today i installed a new expansion valve and dryer. i had pressure on both lines that i took off the front side of the expansion valve which i thought to be quite odd seeing as i never recharged the system after it... "blew its load"....and how i got a discharge of BOTH lines...so i figured the valve was where the clog was. when i got to the dryer i took the bottom line off first...which of course had some pressure on it as well!!! the top line was empty though. all 3 of this lines that still had a charge had a LOT of oil that came out....
so i just cleaned everything up and put it all back together....put a vacuum on the system for about 30 minutes then proceeded to add refrigerant with the cans i picked up earlier. now, these cans i asked the guy at the store for, and these are what he grabbed for me....at a glance it all looked like the right thing....after about the 2nd can i began to get very supicious as to why the compressor hadn't kicked on yet, and why i wasn't getting barely any pressure reading on the high side.....thats when i noticed the cans were NOT refrigerant......yea...thats right, the were OIL CHARGES....and knew right away that this was bad. especially with the amount of oil that appeared to already be in the system.
so i wipped out the trusty FSM to see what the recommended amount was and what to do in the amount of adding too much. book says 6oz. i put TWO 8.5oz cans in. PLUS what all was already in the system.
and all i can find about putting too much oil in is "don't do it". and that it will cause the air to not chill completely or properly. which explains why my air wasn't as cold as i thought it should be a while ago...
SOOO i went and picked up 3 cans of REFRIGERANT....and put them in the system...things went normal then, compressor kicked on after about 1/2 a can, and lines started getting cold or hot depending on which they were. after the 2nd can i went inside to feel the air.........not as cold as it should be......chilled, yes. but not as cold as some systems i've experienced as of late. added part of the 3rd can, low pressure gauge reads about 27-28 PSI. dad says to keep an eye on it tomorrow and see if it freezes up....
so here's my question to you guys. how to i get all this extra oil out?!? is there any decent way? is it even possible without completely disassembling the entire system and blowing it all out?
...thanks in advance!