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Re: Dash A/C recharge [message #88649 is a reply to message #88426]

Tue, 15 June 2010 09:16

Rusty

Messages: 197
Registered: October 2005
Location: Philadelphia Pa

Karma:

Senior Member

Our Napa's are still the go to place for me. The guys behind the counter actually try to help you. Untrue for pep boys or autozone or advance auto. Those places are box stores, I can't stand them.

Anyway I bought a flush kit from Napa, and the expensive chemical they sell for flushing. Its like 40 bucks a quart. You can use mineral spirits to flush the first few flushes, but always use the expensive stuff for the last flush or two.

Of course always replace the dryer, but in this case if the hoses are original or old, replace them, too, they are not that expensive. My Napa has high pressure hose fitting equipment so they can make them on the spot for me. That leaves you the compressor, condenser and evaporator to flush. The expansion valve may need to be replaced, I would just go with a new one, relatively inexpensive but critical component.

The A6 compressor is a work horse but I do not trust remanufactured ones. 50-50 shot. I bought a new Delco A6, 3 yrs ago, it was $450. Now they are close to $800. Some people on this board have rebuilt them by themselves. Others have retro fitted Sanden compressors.

Really doing the A/C right, is expensive and difficult for the average shade tree. But its also expensive to have it done by a pro. The GMC OEM dash air is typical of the 70's technology. Most of the cold air is lost in the duct work. BUT, assuming your compressor is OK, and you dont want new lines, buying a flush kit (you need an air compressor to run it) and flush may set you back only a couple hundred bucks. The Duracool is cheap, buy it on line. Flush everything good, use new green or blue o-rings, pull a vacuum (pumps are about another hundred bucks). The gauge tree tool is another hundred. VERIFY no leaks by waiting a day or 2, once you have a sealed system charge it up with between 2 and 4 cans, your probably going to be OK. Figure 500 bucks total. Thats why some people just spend another hundred or two to have an expert do it. After buying the vacuum pump, gauge tree and flush kit, I only used them once. Now they sit. If you were near philly I would sell them all to you for half price LOL.

Rusty
75 Glenbrook
Philadelphia Pa

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[Message index]

		Dash A/C recharge By: MikeT on Sun, 13 June 2010 17:44
		Re: Dash A/C recharge By: Matt Colie on Sun, 13 June 2010 17:58
		Re: [GMCnet] Dash A/C recharge By: emerystora on Sun, 13 June 2010 18:08
		Re: [GMCnet] Dash A/C recharge By: MikeT on Sun, 13 June 2010 18:30
		Re: [GMCnet] Dash A/C recharge By: emerystora on Sun, 13 June 2010 18:41
		Re: [GMCnet] Dash A/C recharge By: MikeT on Sun, 13 June 2010 19:02
		Re: [GMCnet] Dash A/C recharge By: powerjon on Sun, 13 June 2010 21:38
		Re: [GMCnet] Dash A/C recharge By: MikeT on Mon, 14 June 2010 07:36
		Re: [GMCnet] Dash A/C recharge By: Matt Colie on Mon, 14 June 2010 08:55
		Re: [GMCnet] Dash A/C recharge By: Keith V on Mon, 14 June 2010 09:50
		Re: [GMCnet] Dash A/C recharge By: emerystora on Mon, 14 June 2010 11:02
		Re: [GMCnet] Dash A/C recharge By: Keith V on Mon, 14 June 2010 11:43
		Re: Dash A/C recharge By: JohnL455 on Sun, 13 June 2010 19:02
		Re: Dash A/C recharge By: rgf on Mon, 14 June 2010 22:14
		Re: Dash A/C recharge By: Ken Burton on Tue, 15 June 2010 02:36
		Re: Dash A/C recharge By: Rusty on Tue, 15 June 2010 09:16
		Re: Dash A/C recharge By: ggroth on Tue, 15 June 2010 12:15
		Re: Dash A/C recharge By: Bob de Kruyff on Tue, 15 June 2010 14:51
		Re: Dash A/C recharge By: roy1 on Tue, 15 June 2010 19:19
		Re: Dash A/C recharge By: ggroth on Wed, 16 June 2010 15:16
		Re: Dash A/C recharge By: Rusty on Tue, 15 June 2010 17:30
		Re: Dash A/C recharge By: Bob de Kruyff on Tue, 15 June 2010 19:28
		Re: Dash A/C recharge By: roy1 on Tue, 15 June 2010 20:09
		Re: [GMCnet] Dash A/C recharge By: ljdavick on Tue, 15 June 2010 20:11
		Re: [GMCnet] Dash A/C recharge By: roy1 on Tue, 15 June 2010 21:38
		Re: [GMCnet] Dash A/C recharge By: emerystora on Tue, 15 June 2010 21:56
		Re: [GMCnet] Dash A/C recharge By: roy1 on Wed, 16 June 2010 11:28
		Re: [GMCnet] Dash A/C recharge By: roy1 on Thu, 17 June 2010 22:06
		Re: [GMCnet] Dash A/C recharge By: emerystora on Tue, 15 June 2010 22:45
		Re: Dash A/C recharge By: Rusty on Wed, 16 June 2010 04:58

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