Retrofit AC Kit Questions
#1
Retrofit AC Kit Questions
Well, a year later and I an finally going to tackle the non-working AC in our 740 Wagon. I have looked around and found an entire kit on Rockauto for less than $300. It has a new compressor, drier, and orifice tube. It also converts it to R134a. My question, since I have no experience with AC work, is will I be able to install the parts and charge the system or should I just take it to someone and have them do it the right way? It has no freon and the compressor does not work, even when jumped, so I am guessing the system is empty.
I thought I could replace all the parts easy enough and then recharge myself, but I have been seeing that it has to be vacuumed out and pressurized, etc. What say you guys?
I thought I could replace all the parts easy enough and then recharge myself, but I have been seeing that it has to be vacuumed out and pressurized, etc. What say you guys?
#2
Well, a year later and I an finally going to tackle the non-working AC in our 740 Wagon. I have looked around and found an entire kit on Rockauto for less than $300. It has a new compressor, drier, and orifice tube. It also converts it to R134a. My question, since I have no experience with AC work, is will I be able to install the parts and charge the system or should I just take it to someone and have them do it the right way? It has no freon and the compressor does not work, even when jumped, so I am guessing the system is empty.
I thought I could replace all the parts easy enough and then recharge myself, but I have been seeing that it has to be vacuumed out and pressurized, etc. What say you guys?
I thought I could replace all the parts easy enough and then recharge myself, but I have been seeing that it has to be vacuumed out and pressurized, etc. What say you guys?
#3
#4
Well, I did do the check where I unplug the relay from the drier and jumped the relay while the AC was turned on. The compressor did not come on. This was the only test I have read about to see if it is bad or not. To the best of my knowledge, the AC has not worked in about 4 years. It looks to be original to the car as well.
#5
another useful test is to measure the voltage on the wire coming from the AC controller to said sensor. if you unplug that low pressure sensor, one of the two pins of the connector should have voltage on it relative to ground if the A/C is switched on.
if you do see voltage there, then its possible the high pressure cutoff switch has failed, this is the violet switch on the condenser manifold down off one side of the bottom of the radiator
if you do see voltage there, then its possible the high pressure cutoff switch has failed, this is the violet switch on the condenser manifold down off one side of the bottom of the radiator
#7
I meant to also say that this idea of the evaporator being bad scares me a little. I replaced the heater core last winter and swore I would never get into this dash again. I am pretty good with a wrench, but that job absolutely SUCKED. I guess I have some thinking to do.
#9
Well, I did do the check where I unplug the relay from the drier and jumped the relay while the AC was turned on. The compressor did not come on. This was the only test I have read about to see if it is bad or not. To the best of my knowledge, the AC has not worked in about 4 years. It looks to be original to the car as well.
#10
This is what another member told me... "You can "jumper" the compressor by shorting the pressure switch on the dryer near the schraeder valve--use a paper clip, plug is + and -. If the compressor runs at that point, chances are that the problem is lack of refrigerant due to a leak. " If that is the wrong procedure, I'll look at it again.
I am just not sure how deep I want to get into this. I can buy the entire kit for less than $300 as far as under hood components. But when Pierce brought up the evap, I really thought seriously about the work/reward return value. I have pulled a good bit of the interior to make HC repairs and swore I would never do that again. It may be bad, and it may not, but that is the gamble I have to decide whether or not it is worth it. If I do all of the work under the hood onlyto find out the evap leaks, I might get a stick of dynamite at that point LOL!
I am just not sure how deep I want to get into this. I can buy the entire kit for less than $300 as far as under hood components. But when Pierce brought up the evap, I really thought seriously about the work/reward return value. I have pulled a good bit of the interior to make HC repairs and swore I would never do that again. It may be bad, and it may not, but that is the gamble I have to decide whether or not it is worth it. If I do all of the work under the hood onlyto find out the evap leaks, I might get a stick of dynamite at that point LOL!
#11
This is what another member told me... "You can "jumper" the compressor by shorting the pressure switch on the dryer near the schraeder valve--use a paper clip, plug is + and -. If the compressor runs at that point, chances are that the problem is lack of refrigerant due to a leak. " If that is the wrong procedure, I'll look at it again.
I am just not sure how deep I want to get into this. I can buy the entire kit for less than $300 as far as under hood components. But when Pierce brought up the evap, I really thought seriously about the work/reward return value. I have pulled a good bit of the interior to make HC repairs and swore I would never do that again. It may be bad, and it may not, but that is the gamble I have to decide whether or not it is worth it. If I do all of the work under the hood onlyto find out the evap leaks, I might get a stick of dynamite at that point LOL!
I am just not sure how deep I want to get into this. I can buy the entire kit for less than $300 as far as under hood components. But when Pierce brought up the evap, I really thought seriously about the work/reward return value. I have pulled a good bit of the interior to make HC repairs and swore I would never do that again. It may be bad, and it may not, but that is the gamble I have to decide whether or not it is worth it. If I do all of the work under the hood onlyto find out the evap leaks, I might get a stick of dynamite at that point LOL!
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