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replaced condenssor now ac won't work

qchrismont on Wed August 19, 2009 9:28 PM User is offline

Year: 2000
Make: suzuki
Model: grand vitara
Engine Size: 2.50
Refrigerant Type: 134a
Country of Origin: United States

My old condenser had a leak, so I replaced it with a new unit I found online. Of note, the new condenser is about twice as thick as the old one and has much thicker lines that run through it. I had the system evacuated and added refrigerant to the system. As soon as I have enough refrigerant in the system (with the compressor running, I bypassed the switch and closed the circuit) to show some reading (about 10ft/lbs), the reading would start to climb really fast and the compressor would shut off. About a minute after the compressor would cycle off it would cycle on again and the reading falls back down to 10 ft/lbs again. It just keep doing this and not once is it blowing cold air.

Is it the different size condenser (the company I ordered it from said they have never heard of this problem but are willing to refund my money), or is there something else going on. Until I developed the leak the AC was working fine.

Chick on Wed August 19, 2009 9:44 PM User is offlineView users profile

Sounds like you got an aftermarket serpentine condenser, that said, it would not be a problem charging as long as it's not plugged.. I believe your car uses a parallel flow condenser and that is what you should use.. You must also charge into a deep vacuum. no air can be in the system, and you need both high and low side gauges, not just the low side..It's like just getting one number on your blood pressure.. You are measuring PSI, not ft/lds btw.. Use only the proper oil and virgin R134a, no sealers or other junk...

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

qchrismont on Wed August 19, 2009 9:58 PM User is offline

PSI duh? There was both air and leak detector in the system, before I had the system vacuumed. Are you saying I could have damaged the compressor? Do you think the larger capacity of the condenser is at fault for any of my issues. I do have a high side gauge but once I get over ten PSI on the low side the pressures shoots up on both sides until the compressor shuts off. Thanks

Chick on Wed August 19, 2009 10:19 PM User is offlineView users profile

Not so much a larger condenser than the right one, I believe the grand vitari has a drier as part of the condenser, look at the old one, one side might have a larger tube with a plug on the end, if it does, thats the integrated drier, you have to use the same type..., It could be plugged (the aftermarket one) as long as you didn't run it long, I doubt you ruined the compressor, but I'm not there.. Make sure your wheels are closed on the high side gage when charging also..

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

iceman2555 on Wed August 19, 2009 10:56 PM User is offlineView users profile

The condenser on this model is a Parallel Flow Hi Efficiency Sub Cooling unit with a built in modulator (Rec/Drier). If the replacement is truly a serp type condenser, it is doubtful that this condenser will work with this vehicle.
Post a photo of the unit, this will aid greatly.
It it is a serp, it will lack the same cooling efficiency as the PFHE/Sub unit. The difference in these units could result in compressor failure. The flow characteristics of this replacement may actually contribute to lack of lubricant flow to the compressor which will result in a serious compressor issue. Some of these Susuki compressors are only available at the dealer level and are quite expensive.
If the company will refund your cash....do so.....obtain a OE replacement from a reputable company....site sponsor may be a starting source.
Good luck!

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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

qchrismont on Wed August 19, 2009 11:21 PM User is offline

I think I follow what your saying. The new condenser has one tube that runs back and forth through the condenser whereas the OEM unit has several tubes that that are attached to larger vertical tubes on either end. By the way both condensers have built in rec/dries. Thanks for the info and if I'm off base or if there are some other theories out there please let me know.

HECAT on Thu August 20, 2009 3:38 PM User is offline

Confirmed by your description. You had a OE parallel flow condenser. They have supplied you a serpentine condenser. If they have offered to accept a return, this is what I would do. Click on the AMA link at the top of this page and order your needs here. If you don't find it listed, just give them a call. This forum site is provided by AMA and they stand behind their products. Get this corrected first, and then you can ask your questions here and you will get all the help you need.



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Edited: Thu August 20, 2009 at 3:41 PM by HECAT

HVargas on Thu August 20, 2009 6:33 PM User is offlineView users profile

As stated we do show your condenser as a parallel flow design. I also show that they drier is a separate unit from the condenser on your model. If you are able to return it we do have this condenser available to us. I have included a picture of it to compare to your stock one to ensure it is correct. From there we can get the correct charge and some high/low side pressure's if you have any further problems.


*Edit* You will have to check your vehicle as we do show some models as having the drier in the condenser and some are separate.

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Edited: Thu August 20, 2009 at 6:52 PM by HVargas

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