Automotive Air Conditioning Information Forum (Archives)

Provided by www.ACkits.com

We've updated our forums!
Click here to visit the new forum

Archive Home

Search Auto AC Forum Archives

Cleaning 94 Intrepid questions

lehyumaz on Tue September 01, 2009 9:33 AM User is offline

Year: 1994
Make: Dodge
Model: Intrepid
Engine Size: 3.5L
Refrigerant Type: R134A
Ambient Temp: NA
Pressure Low: NA
Pressure High: NA

Used UV dye to detect leaking compressor. I plan to replace compressor, suction line, expansion valve and drier. I will also rinse remaining parts with paint thinner and compressed air. QUESTION: Can I clean my evaporator in place? I am also unsure of the condenser flow, can i clean it or should I replace it? In for a penney in for a pound.

-------------------------
lee henderson

HECAT on Tue September 01, 2009 10:14 AM User is offline

Used UV dye to detect leaking compressor. I plan to replace compressor, suction line, expansion valve and drier.

Looks like a sound plan to me.

I will also rinse remaining parts with paint thinner and compressed air.

Paint thinner? Please hit the Navigation button (above right), go to the "Automotive Flushing Forum" and read the .PDF file at the bottom of the first post. This will explain and answer a lot of your questions about flushing.

QUESTION: Can I clean my evaporator in place?

Yes, with the right tools, chemicals, and understanding.

I am also unsure of the condenser flow, can i clean it or should I replace it?

Without a debris or sealer concern, they can usually be cleaned; again, with the right tools, chemicals, and understanding.

In for a penny in for a pound.

In for a big expense and potentially some unhappy results if not done correctly.

Read the .PDF and then post back to discuss further.


-------------------------



HECAT: www.hecatinc.com You support the Forum when you consider www.ackits.com for your a/c parts.

FLUSHING TECHNICAL PAPER vs2.pdf 

TRB on Tue September 01, 2009 10:35 AM User is offlineView users profile

Flushing Procedure - Provided by Hecat Inc.

-------------------------

When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

lehyumaz on Thu September 03, 2009 1:37 AM User is offline

I thought I had seen that paint thinner was OK to wash oil out with. After reading the HECAT PDF and seeing your question mark I opted to stick to the original parts replacement as described but only use compressed air to attempt removing any residual oil. Took everything off last night. To anyone with an Intrepid removing the right tie rod makes removing the lines from the evaporator much easier. Tonight put in new expansion valve, suction line, compressor and drier. Replaced all O-rings and coated them with Nylog. Hooked up gauges and drew a vacuum for 30 min, pegged at -30 inches. Let it sit for 30 minutes with no change. Ran pump for 30 more minutes and held for 30 minutes. Will let it sit overnight and check gauges in the morning after 7 hours. So far all looks good. Will post tomorrow.

-------------------------
lee henderson

lehyumaz on Thu September 03, 2009 1:43 AM User is offline

Forgot to mention, the compressor worked really good when there was 134A in the system. So, I wasn't concerned about particulate contamination. Also, did remember to add PAG 46 prior to vacuum. I only added 4 oz instead of 4.5 oz because I figured there would be at least .5 oz of residual oil in the system.

-------------------------
lee henderson

HECAT on Thu September 03, 2009 12:13 PM User is offline

I understand there is no concern of metal debris with this repair. Blowing only air through these components removes very little oil as it just "smears" all over the high internal surface area and hangs on as the air just passes by. Without removing all the oils, it becomes a guess as to how much to add back. Of course this works many times on clean and virgin systems, and the "oil balancing" procedures have been around for a long time. I would think that your guessing may produce an oil overcharge situation as there may have been a lot more remaining in those components than you have allowed for (and in the new compressor). Of course an oil overcharge, in many cases, is much better than an undercharge when it comes to compressor lubrication. Excessive oils will coat the internals of the heat exchangers and can sometimes be seen as the low side pressure running little higher than normal and the vent temps running a little higher than normal. Just my thoughts, as this may not be the case and if it is, it may just be something you can live with.

-------------------------



HECAT: www.hecatinc.com You support the Forum when you consider www.ackits.com for your a/c parts.

FLUSHING TECHNICAL PAPER vs2.pdf 

lehyumaz on Fri September 04, 2009 9:25 AM User is offline

HECAT & TRB thank you for your thoughts. That is what I was asking for.


Vacuum held OK overnight. Charged with about 28 oz.

700 RPM, Hi 265, Lo 43, Vent 54

1500 RPM, Hi 300, Lo 30, Vent 55

-------------------------
lee henderson

Back to Automotive Air Conditioning Forum

We've updated our forums!
Click here to visit the new forum

Archive Home

Copyright © 2016 Arizona Mobile Air Inc.