A/C only works if I bypass clutch relay
#21
04-16-2018, 03:44 PM
I know this topic was a long time ago, but I never posted my solution for this issue. I ended up taking it to the dealership and the issue was a bad expansion valve. The compressor went out last year and I decided to do it myself this time.
Last edited by Danny1976; 04-16-2018 at 04:08 PM.
#23
04-18-2018, 07:00 AM
When I installed this new compressor, the clutch was always engaged. I called the seller that I bought it from online, and they said as long as the pressure are right, the compressor will run. They also said that its normal for the compressor not to cycle and if it did cycle it was not good. I am going to bypass the clutch relay and see if I get results. Will post back. Hopefully I can get this diagnosed this time.
Here is the chat I had with the seller online:
Hi Daniel Rodriguez, Thank you for contacting us.
Here is a transcript of our recent chat, for your records.
Daniel Rodriguez says: 2017-10-24 18:15:56 Question about compressor
Dennis says: 2017-10-24 18:16:15 Hi Daniel, I would be happy to help you.
Daniel Rodriguez says: 2017-10-24 18:16:35 Order #: 000015436
Is the compressor clutch suppose to cycle?
The system is properly charged and is cooling, but I cant see or hear the clutch cycle.
I swapped the clucth relay with the horn relay and it still wont cycle.
Dennis says: 2017-10-24 18:20:09 Thank You for your inquiry into this matter! the system you have uses an expansion valve which regulates your freon so your compressor should run continuously if there is no problem with your system!
Daniel Rodriguez says: 2017-10-24 18:21:01 ok. I was concern, since the old compressor cycle.
Dennis says: 2017-10-24 18:21:18 on an orifice tube system, the clutch should cycle due to the high/low pressure switches in use!
Daniel Rodriguez says: 2017-10-24 18:21:53 Before, I did have the same expansion valve.
I have a high pressure switch
Dennis says: 2017-10-24 18:23:09 your system shouldn't cycle if the system is operating efficiently!
What are your levels??
Daniel Rodriguez says: 2017-10-24 18:23:50 high is 200-210 PSI and low is 30-40 PSI
Dennis says: 2017-10-24 18:26:13 that is common levels for a day like today! if your low go's lower than around 25psi and your high goes higher than 300psi then your clutch should cycle any pressure in between it should stay engaged!
Daniel Rodriguez says: 2017-10-24 18:26:58 Thanks....That a great relieve. One last question.
What temps should be coming out of the center vent?
Dennis says: 2017-10-24 18:27:30 one last question! if you pull the relay does the compressor clutch stop?
Daniel Rodriguez says: 2017-10-24 18:27:39 yes it stops
Dennis says: 2017-10-24 18:28:07 all seems to be working within factory peramiters!!
Daniel Rodriguez says: 2017-10-24 18:28:09 if I press the off on the A/C button the clutch stops
I am getting temps on the vents around 58 degrees
but on my other car I get 48-50
Dennis says: 2017-10-24 18:29:22 the temp out of the vents very's depending on whether you are using regular freon/ PAG oil or synthetic!
that is common for your vehicle!
Daniel Rodriguez says: 2017-10-24 18:29:39 regular freon and pag oil
Dennis says: 2017-10-24 18:30:47 is there anything else i can assist you with this afternoon?
Daniel Rodriguez says: 2017-10-24 18:30:56 Adding more freon wont make it cooler?
Dennis says: 2017-10-24 18:32:33 actually NO! all that will do is cause more pressure in your system and it will trigger your high pressure switch to cause your compressor not to work properly!
Daniel Rodriguez says: 2017-10-24 18:32:38 The person that service it, put the correct amount, I think so.
ok
thanks for your help and have a great day
Dennis says: 2017-10-24 18:33:49 if you have any further questions in the future feel free to chat back anytime during business hours!
Here is a transcript of our recent chat, for your records.
Daniel Rodriguez says: 2017-10-24 18:15:56 Question about compressor
Dennis says: 2017-10-24 18:16:15 Hi Daniel, I would be happy to help you.
Daniel Rodriguez says: 2017-10-24 18:16:35 Order #: 000015436
Is the compressor clutch suppose to cycle?
The system is properly charged and is cooling, but I cant see or hear the clutch cycle.
I swapped the clucth relay with the horn relay and it still wont cycle.
Dennis says: 2017-10-24 18:20:09 Thank You for your inquiry into this matter! the system you have uses an expansion valve which regulates your freon so your compressor should run continuously if there is no problem with your system!
Daniel Rodriguez says: 2017-10-24 18:21:01 ok. I was concern, since the old compressor cycle.
Dennis says: 2017-10-24 18:21:18 on an orifice tube system, the clutch should cycle due to the high/low pressure switches in use!
Daniel Rodriguez says: 2017-10-24 18:21:53 Before, I did have the same expansion valve.
I have a high pressure switch
Dennis says: 2017-10-24 18:23:09 your system shouldn't cycle if the system is operating efficiently!
What are your levels??
Daniel Rodriguez says: 2017-10-24 18:23:50 high is 200-210 PSI and low is 30-40 PSI
Dennis says: 2017-10-24 18:26:13 that is common levels for a day like today! if your low go's lower than around 25psi and your high goes higher than 300psi then your clutch should cycle any pressure in between it should stay engaged!
Daniel Rodriguez says: 2017-10-24 18:26:58 Thanks....That a great relieve. One last question.
What temps should be coming out of the center vent?
Dennis says: 2017-10-24 18:27:30 one last question! if you pull the relay does the compressor clutch stop?
Daniel Rodriguez says: 2017-10-24 18:27:39 yes it stops
Dennis says: 2017-10-24 18:28:07 all seems to be working within factory peramiters!!
Daniel Rodriguez says: 2017-10-24 18:28:09 if I press the off on the A/C button the clutch stops
I am getting temps on the vents around 58 degrees
but on my other car I get 48-50
Dennis says: 2017-10-24 18:29:22 the temp out of the vents very's depending on whether you are using regular freon/ PAG oil or synthetic!
that is common for your vehicle!
Daniel Rodriguez says: 2017-10-24 18:29:39 regular freon and pag oil
Dennis says: 2017-10-24 18:30:47 is there anything else i can assist you with this afternoon?
Daniel Rodriguez says: 2017-10-24 18:30:56 Adding more freon wont make it cooler?
Dennis says: 2017-10-24 18:32:33 actually NO! all that will do is cause more pressure in your system and it will trigger your high pressure switch to cause your compressor not to work properly!
Daniel Rodriguez says: 2017-10-24 18:32:38 The person that service it, put the correct amount, I think so.
ok
thanks for your help and have a great day
Dennis says: 2017-10-24 18:33:49 if you have any further questions in the future feel free to chat back anytime during business hours!
Last edited by Danny1976; 04-18-2018 at 07:12 AM.
#24
04-18-2018, 05:56 PM
#25
04-19-2018, 11:05 AM
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#26
04-19-2018, 12:14 PM
This is the Compressor it I bought:
https://www.pitstopauto.com/Catalog/...EnginePartId=0
The compressor was UAC Brand model 10S20 Part# CO 10522C
Last edited by Danny1976; 04-19-2018 at 01:24 PM.
#27
04-19-2018, 08:46 PM
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I can hear my compressor make the engine drawl down as you described. but i was under impression that that is when the clutch engages, they aren't separate. the compressor pistons pump as the clutch is engaged, this in return pumps the liquid to a gas. as long as the air is cold coming through the vents then the car is find. but the clutch i think should not be on constant because it would only be engaged when computer says to clutch to engage because the compressor pistons need to start to be used to pressurize the liquid.
could it be the clutch space is not properly gapped between the magnetic plate and therefore not being able to release from the magnetic drawl. i don't know the proper space for gapping for you to check with a feeler gauge.
another area could be the expansion valve is not properly reading temps therefore giving false reading and therefore telling the clutch to engage all the time or close to it. i put a rear expansion valve in rear a/c system and it was mopar and is still working.
but my a/c compressor is going out i believe because i hear what sounds like bearings when i turn it on. so i dont use it even though living in s. florida because i don't want to clutch to freeze and break my belt and throw it into pieces maybe under a sensor or flywheel.
i did have that happen before.
could it be the clutch space is not properly gapped between the magnetic plate and therefore not being able to release from the magnetic drawl. i don't know the proper space for gapping for you to check with a feeler gauge.
another area could be the expansion valve is not properly reading temps therefore giving false reading and therefore telling the clutch to engage all the time or close to it. i put a rear expansion valve in rear a/c system and it was mopar and is still working.
but my a/c compressor is going out i believe because i hear what sounds like bearings when i turn it on. so i dont use it even though living in s. florida because i don't want to clutch to freeze and break my belt and throw it into pieces maybe under a sensor or flywheel.
i did have that happen before.
#28
04-20-2018, 08:40 AM
Compressor went out again. Turn the clutch manually a couple of times and when I turn the A/C on.... The clutch engaged. Just email Pitstopauto regarding the issue, since the compressor is less than a year old.
I emailed PitstopAuto and they are sending me a replacement since its still under warranty. I have to go through the whole empty the system, doing vaccum and buying more freon, but its better than buying another one.
I emailed PitstopAuto and they are sending me a replacement since its still under warranty. I have to go through the whole empty the system, doing vaccum and buying more freon, but its better than buying another one.
Last edited by Danny1976; 04-20-2018 at 12:29 PM.
#29
04-21-2018, 08:30 PM
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YOu going to replace the expansion valve or keep it. Im going to replace mine eventually living in s. florida. the outlay cost for vacuum pump is expensive especially for one time use. where did you get yours and price?
if you had it over again would you have got compressor locally to reduce mailing charges sending it back?
if you had it over again would you have got compressor locally to reduce mailing charges sending it back?
Last edited by scotter5; 04-21-2018 at 08:32 PM.
#30
04-21-2018, 08:55 PM
YOu going to replace the expansion valve or keep it. Im going to replace mine eventually living in s. florida. the outlay cost for vacuum pump is expensive especially for one time use. where did you get yours and price?
if you had it over again would you have got compressor locally to reduce mailing charges sending it back?
if you had it over again would you have got compressor locally to reduce mailing charges sending it back?
The first A/C system I replaced was my brothers car with the help of my neighbor who is a retire mechanic. I did that last year. The way I did his, was to replace the expansion valve, dryer and compressor. The dryer was a pain to remove, because it was right next to the evaporator. Then we took the car to Pep Boy's and they charged him about $90 to have the car vacuumed and charged. When my A/C went out, the cheapest price I could find was online for a complete A/C kit like the one at PitStopAuto... It had the Dryer, Compressor, O-Rings, Expansion Valve and the PAG Oil for $200 free shipping and I think tax free.
Instead of paying Pep Boys $90, I decided to buy some A/C Gauges $60 on Amazon, bought the 3 cans of Freon at Walmart $15 and I rented the Vacuum Pump from Auto Zone. I was going to buy the Vacuum Pump, until I found out you could rent it at Auto Zone. When I rented the Vacuum Pump, I found out they also rent out the A/C Gauges. But, I am glad I bought the gauges and not rent them, because I have used it more times than I thought to diagnose my car and others. They charge your credit card for the cost of the unit and refund you when you take it back.
Last edited by Danny1976; 04-21-2018 at 09:07 PM.