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Dealer parts only?

2000_civic on Tue June 17, 2008 10:33 AM User is offline

Year: 2000
Make: Honda
Model: civic
Engine Size: 1.6
Refrigerant Type: 134

Hello everyone, I am in the process of trying to sort out my a/c problem. I recently purchased a new evap., condenser, expansion valve, and filter drier from an auto parts store. I bought all this because I couldn't seem to find the leak. This weekend when I went to put on all these new parts I finally found some dye in the service valve on the high side hose. So I replaced the hose and the filter drier. The system held a vacume for an hour, so I charged it and it works fine in the morning and at night. The heat of the day renders it useless. A honda tech said that at my mileage I should have the evap and expansion valve changed. He also said they have problems with aftermarket condensers not working. This brings me to my questions. I would really appreciate any insight.

1- Will my system work with a new evap. and condenser that wasn't made by honda?


2- Does the expansion valve sound like the problem?

mk378 on Tue June 17, 2008 1:08 PM User is offline

You'll need to measure pressures on both sides in hot weather to diagnose. Could simply be overcharged with refrigerant or oil. Does your aftermarket condenser look different from the original one? Could put the original one back in if it doesn't leak.

2000_civic on Tue June 17, 2008 3:25 PM User is offline

The condenser looks about the same as the factory model (if it is factory). The tech said the capacity is off on the aftermarket ones. I will test the pressures during the hottest part of the day. Thanks for the reply!

iceman2555 on Wed June 18, 2008 6:50 AM User is offlineView users profile

Pressure/temps should be supplied to aid in a possible diagnosis of this problem.
However, to address the question concerning the 'quality' of aftermarket parts. This does indeed open the door to some serious issues. The Honda OE condenser is a Parallel Flow Hi Eff unit, constructed of aluminum. Some of the aftermarket units are constructed of brass and copper and are NOT Parallel Flow Hi Eff units, these units do lack some cooling efficiency. Also, the same could be said about the evap, some aftermarket units lack the same cooling efficiency as OE.
The amount of recharge for this vehicle is very critical....21-23.5 oz makes for a difficult recharge is not using the proper equipment. Also the lube recharge is very small....4.3-4.6 oz.....easy to overfill.
Post a bit more info...esp about the parts....possible metal construction.....supplier......how much lube as added to the system....etc.
A system than works with little heat load...morning/evening and does not cool under high heat loads could be traced to an undercharged system....or the possibility that the two heat exchangers are not simply transferring sufficient heat.
Let us know a bit more.

-------------------------
The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
Thomas Jefferson

2000_civic on Thu June 19, 2008 3:04 PM User is offline

Thank you for the replies! I am going to post my pressures as well as the manufacturer of my coils and some pics when I get home today. I do have another question now........What kind of tape do you use to secure the temperature probe from the expansion valve to the evaporator?

iceman2555 on Thu June 19, 2008 6:19 PM User is offlineView users profile

Check with site sponsor for the tape....however, the tape is not used to 'secure' the txv sensor bulb...it is merely to insulate the sensor from external heat. The sensor bulb should be mechanically attached using a clamp....a worm type clamp is satisfactory.
Failure to properly attach this bulb will result in loss of vent temps.

-------------------------
The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
Thomas Jefferson

2000_civic on Thu June 19, 2008 10:33 PM User is offline

I didn't get a chance to verify my pressures today, but I want to say they were about 37-40 on the low side and 300-350 on the high side. I will double check that. Here are some pics of the coils I got. These are not installed yet, I got the car used so I don't know what's on it now. The evaporator and expansion valve were made by Murray. The condenser was made by Ready-Aire. Here are some pics. I took an overall shot and a close-up to get a better possible idea of the construction.







iceman2555 on Fri June 20, 2008 9:33 AM User is offlineView users profile

Murray is a trade name for 4Seasons, their evaps are made by a subsidy called FSHE (Four Season Heat Exchange) and are normally good units. The condenser could be made by various sources, probably an import (most are), but the good thing is that it is a OE replacement type....Parallel Flow Hi Efficiency.
Insure that the sensor bulb of the TXV is correctly attached to the evap outlet tube (see above), the system is properly charged with lubricant, type and amount, and of course, properly recharged. Recharge, lube and refrigerant are most critical.
The pressures seem a bit high...not sure of the ambient temp and test conditions....if the recharge rates are correct....and the sensor bulb is correctly attached.....check for a possible engine cooling system problem....ie, the condenser cooling fan...insure that it is operational.
Good luck



-------------------------
The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
Thomas Jefferson

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