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Adding puller fan to improve A/C?

Geoaidan on Sun July 05, 2009 4:56 AM User is offline

Year: 1993
Make: Buick
Model: Century
Engine Size: v-6
Refrigerant Type: R-134a
Country of Origin: United States


I have a '93 Buick Century with the 3300 engine.

When I am driving the car, the A/C is halfway decent. Blows cool air. But when I am idling, the air warms up a little bit. Not very much, but enough for me to not be happy with it. (3-5 degree difference)

I was told by a friend that adding a puller fan in front of the condenser radiator would improve the quality of A/C when the car is idling and not moving.

Is this true? If that's true, how big of a fan should I install?

Are there any other ways I can improve my A/C without spending too much money? (It's charged full and has Artic Freeze R134a+ in it)

I'm looking to make my car as cold as a freezer.


Thanks,
George

Chick on Sun July 05, 2009 6:06 AM User is offlineView users profile

was it charged properly? deep vacuum pulled and charged into the vacuum? those cars do cool very well, even retrofitted. Did you check and change the O tube before recharging? what are the pressures? It already has a electric fan, that works just fine for that car, if you add one, you'd need a pusher fan btw..

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

ChevyMan on Sun July 05, 2009 7:41 AM User is offline

What exactly is "Arctic Freeze R134a+"? That sounds like it may be one of those performance booster products. Only pure R134a is recommended. I'm not saying that is the problem, just curious what exactly that stuff is.

Geoaidan on Sun July 05, 2009 6:32 PM User is offline

Chick,

It wasn't deep vacuum pulled. I don't have that equipment to do it. Approximately how much should I expect to pay a professional to do that?

What's the 'O Tube'? The A/C didn't have a leak, I only wanted to make it cooler. As for the pressure, I used the cheap gauge that's on the a/c recharge canister. I know they aren't accurate and that they're just for a "ball park" figure.

There is an electric fan that's for the radiator, but it doesn't have a pusher fan. Car came that way. They didn't add pusher fans to Buick Century cars until 1995. (I have a 1993) I imagine there's a reason why they added a pusher fan in 1995. But then again, my 1993 was originally an R-12 system that got converted to R134a. (Whereas the 1995 was R134a)



ChevyMan,

It's R134a with a performance booster, lubricant, leak sealant, and water/acid remover. I originally had regular R134a in there, but it didn't cool to my expectations. So, I put in Artic Freeze, and I have noticed a significant improvement. Just not good enough for me.

I hope to have my A/C so cold that it'll blow colder than 55 degrees. I am guessing that my a/c blows around 63-64 right now.




Edited: Sun July 05, 2009 at 6:35 PM by Geoaidan

Chick on Sun July 05, 2009 7:10 PM User is offlineView users profile

You need to have the system evacuated, change the O tube (and check condition) it's in the condenser outlet on those cars behind the grill/header panel. Change the accumulator, especially now with the magic in a can stuff in there.. It's a shame you put the death kit in it, be sure to tell whoever works on it what you put in, as you can ruin some equipment with that junk.. If charged properly your car will cool just fine with the one big radiator fan. If you feel the need for better airflow after cleaning the bugs and dirt from the condenser and area between it and the radiator, then a pusher fan can be installed in front of the condenser, but as I said, I never had a problem with those cooling after being retrofitted, provided you do it right.. My best advice is NOT to run the AC until you get the junk out and properly recharged. prices vary shop to shop.. Hope this helps...

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

Geoaidan on Mon July 06, 2009 2:59 AM User is offline

Chick,

I've used this stuff in several other cars with a lot of success. My sister is still driving her Celebrity that has this stuff in for a while now. Thanks for letting me know about the damage that it can do. Much appreciated. Will take your advise and not use the A/C until I have it cleaned out.

On another note, I read on another a/c forum that if you insulated the piping between the condenser and the firewall, it'd increase the a/c efficiency. Is that true?

Also, can the thermal expansion valve be adjusted to allow for more circulation to make my a/c run colder?


Thanks again,
George

Edited: Mon July 06, 2009 at 3:54 AM by Geoaidan

Chick on Mon July 06, 2009 7:20 AM User is offlineView users profile

Your car uses an O tube, not a TXV...

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

Geoaidan on Mon July 06, 2009 3:43 PM User is offline

Chick,

Thanks. So, the O-tube itself is a certain size to allow the exact same amount of 134a go through at all times. (No controls?)

(Just trying to learn how these system works, that's all)

Edited: Tue July 07, 2009 at 10:49 PM by Geoaidan

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