Intellect
NAXJA Forum User
- Location
- Tampa Florida
Fun story! Need help from an ac pro.
Xj has never had working ac. I purchased a used compressor, new evaporator, new drier, and used but good lines for from expansion to drier and compressor and to condensor.
So i have a 4.0 4wd 1995 cherokee but got a used 1992 compressor. It has different fitting sizes so i replaced my hoses with the 1992 hoses but new expansion and new drier.
I vacuum the system. It even holds pressure for a good 20 minutes, so i DID do the correct tests. I even borrowed the fancy gauges and vacuum pump. Even had an ac pro help me. Im not shy to ac work..
Well the compressor wouldnt accept any refigerant. Now i do have two problems in one, an electrical, plus the system refusing to take in refigerant. When i turn the ac on with the drier jumped, the ac clutch does NOT come on... I tried the drier jump to itself trick, didnt work. I also tried compressor to the 12v constant. The clutch kicks on when i put it to 12v battery positive , but no matter what it would not take in any refigerant.
(Fast forward a few days, if i put a jumper wire in the a/c relay uner the hood, the ac switch does turn on the ac clutch with drier jumped, thus i believe the electrical issue is just a bad relay, even though the abs relay didnt work in the ac slot.. the relays could be different even if they look the same)
Yes i oiled eveything right, yes i know a ac mechanic should only do this. Im mostly ase certified, motors engines brake suspension etc , but this ac system is kicking my ass. Expansion and driers good. I was told compressor worked when pulled, but it doesnt take any refigerant even if drier is jumped or if clutch is direct 12v.
Now my electric fan doesnt kick on either, was told these tie together electrically? Even with relay jumped and drier jumped the fan doesnt come on, but ac clutch DOES.
Also, i think the compressors bad, and i have a electric issue. Cause thats what the pro...over the internet...told me. Two issues total?
Need help and insight
Systems currently vacuumed so if it turns out to NOT be the compressor, id LOVE to be able to fix electrical ISSUES and add refigerant
But if it is.. than it is.. just need some input
Dont want to buy a $230 compressor and the system still refuse refigerant.
The used compressor was from a 92 jeep that was being parted out, so it had no hood.. ac supposedly blew cold 2 months ago.. but when i pulled the compressor it had no refigerant in it, and the firewall auminum hoses where bent and broke off on other side of the expansion valve, so air did get in the system.. but air shouldnt ruin a compressor. And water wouldve only hit the outside of compressor...
This entire situation has me stumped.
To spell it out....
I purchased a harbor freight ac gauge set and vacuum pump
Connected high and low to behind compressor car end
Connected pump
Turned pump on
Opened gauges
Vacuumed for 35 minutes
Turned gauges off, turned vacuum off
Sat for 20 minutes.. held at 29 ish blue, and as low as red would go..( this told me yay no system leaks! )
I turn vacuum on and re open gauges and vacuum it for another 40 minutes.
Everything is smooth, i go to add refigerant
I close gauges blue and red. ( Car end still open )
I undo the yellow line from vacuum pump, connect refigerant can.
I pierce can with tapper
I purge the yellow line into the atmosphere (sorry trees) (the harbor freight gauges had a cool purge button)
I think everythings going smooth
**At this point i crank jeep, and force compressor on by jumping drier and compressor to constant 12v (didnt know relay was bad back than) **
I open just the blue gauge to allow refigerant in.. i wait 20 minutes... Shake can, hold it different ways, blue gauge started mid level, than slowly climbed to about 100.. than stopped. I wait an wait and wait... Its as if the entire process was paused by a magical time button, the can will not empty out any more, the system wont take any, the vents do not get cold, the system probably accepted 2-4oz? Can got cold, but not icy, before the system refused to accept anymore... Nunbers could be off oz wise, maybe it didnt take any, i just know the can got cold and felt barely barely emptied. As if it took one tiny sip out of it.
After 25 minutes of the system literally refusing refigerant i ask my ac tech friend what to do!? He says open the red gauge. When i do this, both red and blue went to 100. He claimed "welp compressors shot"
I just want to know if that logic makes sence? Id hate to spend $230 on a compressor, and mess with the labor, and the compressor NOT be bad. But if it is for sure bad than ill bite the bullet.
This compressor supposedly blew cold two months ago... Before sitting i direct sun and rain for two months.
It has 1992 fittings but has a 2000 sticker on it. Was replaced and r134a'd built.
So in the end.. i tried to charge my ac and the system refused refiggerant even with compressor forced on..
Anothee guy thinks it is impossible to get 100psi on both gauges without me have had done the process wrong. He swears impossible, he swears i probably fudged up a step or two... But this isnt my first rodeo.
Any and all insight is helpful!!
If i can figure out how to attatch pictures, im attaching one as i tried charging... One of when it wouldnt charge and i opened high valve... And one of what the "you had to mess up" guy says. Thanks a lot guys for any help!
Xj has never had working ac. I purchased a used compressor, new evaporator, new drier, and used but good lines for from expansion to drier and compressor and to condensor.
So i have a 4.0 4wd 1995 cherokee but got a used 1992 compressor. It has different fitting sizes so i replaced my hoses with the 1992 hoses but new expansion and new drier.
I vacuum the system. It even holds pressure for a good 20 minutes, so i DID do the correct tests. I even borrowed the fancy gauges and vacuum pump. Even had an ac pro help me. Im not shy to ac work..
Well the compressor wouldnt accept any refigerant. Now i do have two problems in one, an electrical, plus the system refusing to take in refigerant. When i turn the ac on with the drier jumped, the ac clutch does NOT come on... I tried the drier jump to itself trick, didnt work. I also tried compressor to the 12v constant. The clutch kicks on when i put it to 12v battery positive , but no matter what it would not take in any refigerant.
(Fast forward a few days, if i put a jumper wire in the a/c relay uner the hood, the ac switch does turn on the ac clutch with drier jumped, thus i believe the electrical issue is just a bad relay, even though the abs relay didnt work in the ac slot.. the relays could be different even if they look the same)
Yes i oiled eveything right, yes i know a ac mechanic should only do this. Im mostly ase certified, motors engines brake suspension etc , but this ac system is kicking my ass. Expansion and driers good. I was told compressor worked when pulled, but it doesnt take any refigerant even if drier is jumped or if clutch is direct 12v.
Now my electric fan doesnt kick on either, was told these tie together electrically? Even with relay jumped and drier jumped the fan doesnt come on, but ac clutch DOES.
Also, i think the compressors bad, and i have a electric issue. Cause thats what the pro...over the internet...told me. Two issues total?
Need help and insight
Systems currently vacuumed so if it turns out to NOT be the compressor, id LOVE to be able to fix electrical ISSUES and add refigerant
But if it is.. than it is.. just need some input
Dont want to buy a $230 compressor and the system still refuse refigerant.
The used compressor was from a 92 jeep that was being parted out, so it had no hood.. ac supposedly blew cold 2 months ago.. but when i pulled the compressor it had no refigerant in it, and the firewall auminum hoses where bent and broke off on other side of the expansion valve, so air did get in the system.. but air shouldnt ruin a compressor. And water wouldve only hit the outside of compressor...
This entire situation has me stumped.
To spell it out....
I purchased a harbor freight ac gauge set and vacuum pump
Connected high and low to behind compressor car end
Connected pump
Turned pump on
Opened gauges
Vacuumed for 35 minutes
Turned gauges off, turned vacuum off
Sat for 20 minutes.. held at 29 ish blue, and as low as red would go..( this told me yay no system leaks! )
I turn vacuum on and re open gauges and vacuum it for another 40 minutes.
Everything is smooth, i go to add refigerant
I close gauges blue and red. ( Car end still open )
I undo the yellow line from vacuum pump, connect refigerant can.
I pierce can with tapper
I purge the yellow line into the atmosphere (sorry trees) (the harbor freight gauges had a cool purge button)
I think everythings going smooth
**At this point i crank jeep, and force compressor on by jumping drier and compressor to constant 12v (didnt know relay was bad back than) **
I open just the blue gauge to allow refigerant in.. i wait 20 minutes... Shake can, hold it different ways, blue gauge started mid level, than slowly climbed to about 100.. than stopped. I wait an wait and wait... Its as if the entire process was paused by a magical time button, the can will not empty out any more, the system wont take any, the vents do not get cold, the system probably accepted 2-4oz? Can got cold, but not icy, before the system refused to accept anymore... Nunbers could be off oz wise, maybe it didnt take any, i just know the can got cold and felt barely barely emptied. As if it took one tiny sip out of it.
After 25 minutes of the system literally refusing refigerant i ask my ac tech friend what to do!? He says open the red gauge. When i do this, both red and blue went to 100. He claimed "welp compressors shot"
I just want to know if that logic makes sence? Id hate to spend $230 on a compressor, and mess with the labor, and the compressor NOT be bad. But if it is for sure bad than ill bite the bullet.
This compressor supposedly blew cold two months ago... Before sitting i direct sun and rain for two months.
It has 1992 fittings but has a 2000 sticker on it. Was replaced and r134a'd built.
So in the end.. i tried to charge my ac and the system refused refiggerant even with compressor forced on..
Anothee guy thinks it is impossible to get 100psi on both gauges without me have had done the process wrong. He swears impossible, he swears i probably fudged up a step or two... But this isnt my first rodeo.
Any and all insight is helpful!!
If i can figure out how to attatch pictures, im attaching one as i tried charging... One of when it wouldnt charge and i opened high valve... And one of what the "you had to mess up" guy says. Thanks a lot guys for any help!