AC sucks is there an upgrade

[98_k1500]

That can cause it to freeze up if you run the truck at high rpm (doin 80 constantly). The compressor can't kick off to let the low side pressure come up any.

 

[98_k1500]

That will decrease the temp of the air to an extent tho. Good tip.

 

[skylark]

That can cause it to freeze up if you run the truck at high rpm (doin 80 constantly). The compressor can't kick off to let the low side pressure come up any.

I have heard about the possibility of freezing but as of yet I haven't had any issues. The only time it sees over 2100 rpm is when im getting to speed.

 

[98_k1500]

It'll probably be fine then. If it freezes, put a touch more freon in it.

 

[98_k1500]

If i am not mistaken, you have the low pressure switch bypassed. The lower the low side pressure, the colder the ac is. This is why one freezes when it is low of freon.

 

[gndd1997]

Well my 88 reg cab swapped from r12 to 134 would freeze your balls off...I put a new top house on my AC and I think is full..my friend is bringing me some gauges this weekend so I'll see...is there a guide on pulling the blower ?

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Calvin, if you haven't found out how to pull the blower motor yet...it's under passenger side dash, probably with a plastic and foam sound deadener that's kind of a PITA to get off (you will have to take your glove box off), then remove about 8 small bolt/screws around perimeter as well as power and ground wires, then carefully pull it out and jimmy it around all the other under dash crud until you can get it out. If need be I can post pics after work, until then, good luck!!

 

[1997k1500Calvin]

Calvin, if you haven't found out how to pull the blower motor yet...it's under passenger side dash, probably with a plastic and foam sound deadener that's kind of a PITA to get off (you will have to take your glove box off), then remove about 8 small bolt/screws around perimeter as well as power and ground wires, then carefully pull it out and jimmy it around all the other under dash crud until you can get it out. If need be I can post pics after work, until then, good luck!!

Thanks dude I may attempt this sometime this weekend

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[1997k1500Calvin]

Ok checked blower..looked new and clean..took center and lower dash off and everything looked ok.. Guess its the freon low...hopefully my buddy remembers to bring me some gauges this weekend

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[east302]

Did you check the coil housing? After you pull the blower, look inside it's housing and into the square hole on the left. Here's a link...

http://www.chevytalk.org/fusionbb/showtopic.php?tid/282054

Use a flashlight and you'll see the evaporator coil. I'd be really surprised if it wasn't filled with dust, leaves and crud. Pull as much out as you can by hand, using a vacuum cleaner wand and water hose for the rest. If it isn't clogged, the water will drain out through the drain line in the firewall.

A lot of people use a coil cleaner and a toothbrush to get the rest out. Make sure the coil cleaner is the self-rinsing kind. I've used this...

http://www.homedepot.com/p/AC-Safe-Air-Conditioner-Coil-Foaming-Cleaner-AC-920/100599017

 

[michael hurd]

If you don't already have it there is a different orifice tube for severe climates. The Four Seasons part number is http://www.rockauto.com/catalog/moreinfo.php?pk=869808&cc=1158331