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AC back together and working,new question

hardbody on Sun April 24, 2011 12:45 AM User is offline

Year: 1990
Make: Nissan
Model: Sentra
Engine Size: 1.6
Refrigerant Type: 134

Ok, got the system all back together and it is working, had my guy flush the evaporator from both directions, he used some kind of flush chemical not sure what it was but a whole lot of green dye came out !!, condenser was ok no dye little bit of oil. Replaced the drier and expansion valve with the rebuilt compressor from e-bay.

vacuum pulled on system and re-charged, Air temp out of vents is right around 40 degrees, question is why does it take so long for the air to get cold? Usually it will take about 15 minutes before the air is cold, I don't know what he was getting for the pressures but I know he said they were ok. I bought some coil cleaner and am going to clean the condenser coils tomorrow to see if that helps. I do know if after first starting the car if I hose the condenser down the air gets colder a lot quicker. I have new electric cooling fans (OEM part,dual fans in one unit) and the one I have in the car now is meant for an automatic tranny and is a real monster of a fan compared to the stock one so I know I have good air flow.

Any ideas or things to check?

Thanks everyone

Cussboy on Sun April 24, 2011 9:37 AM User is offline

Quote
Originally posted by: hardbody
I bought some coil cleaner and am going to clean the condenser coils tomorrow to see if that helps. I do know if after first starting the car if I hose the condenser down the air gets colder a lot quicker. I have new electric cooling fans (OEM part,dual fans in one unit) and the one I have in the car now is meant for an automatic tranny and is a real monster of a fan compared to the stock one so I know I have good air flow. Any ideas or things to check?
Thanks everyone

Agree, sounds like condenser issue. Are the fans both on, and BOTH blowing or pulling the air from front of vehicle towards the rear?



Edited: Sun April 24, 2011 at 9:39 AM by Cussboy

hardbody on Sun April 24, 2011 1:54 PM User is offline

yes both fans are working and they are installed behind the radiator, they are the OE fans in the OE location, I had a bad fan motor a while back and the store that I bought the dual fan unit from only had them for a auto trans car, mine is a manual trans, the store sells surplus new Nissan parts. I checked to see if the new fans would fit before I ordered them using a car in a junkyard, everything was the same except the new fan motor is a lot bigger, I guess because the auto trans makes more heat.

The fans pull the heat from behind the radiator. Going out to try and clean the condenser today.

thanks for the reply

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