AC pump & gauges. Troubleshooting - Chevy Impala SS Forum
 
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post #1 of 8 (permalink) Old 07-20-2015, 10:00 AM Thread Starter
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AC pump & gauges. Troubleshooting

I just pulled my 94 Caprice out of its hibernation and the ac isn't working. It worked 8-9 years ago, but slowly blew warmer air up until 5 years ago and i haven't driven it more than a few miles every few months since. After putting a few hundred miles on this weekend, i definatley need ac again.

Its been a good 10 years since doing ac work in a dealership i worked at. So, I'm in need of a good set of 134a manifold gauges and a vacuum pump. Open to all suggestions on what works and what is crap. For instance i found a vacuum pump at harbor freight for $20 that i can hook up to my 20 gal air compressor. I'm willing to spend more if needed but i don't need anything heavy duty as ill likely only use it a few times in the next few years.

94' 9C1 20" Lexani Krystals or 14" Chrome & Gold Daytons depending on my mood, Intrax springs, belltech shocks, Moog suspension, body bushings, stealth bolt, Smoothie bumpers, 91 tails, chrome pillars, K&N Intake, Fuel Rail Covers, New interior, custom grill, shaved, powdercoated parts, and so on..
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post #2 of 8 (permalink) Old 07-20-2015, 10:26 AM
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If you don't plan on using them often, why not borrow them? The Autozone by me loans all ac related tools. They were in pretty good shape when I used them on my truck. Just another option to save some money.
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post #3 of 8 (permalink) Old 07-20-2015, 11:49 AM Thread Starter
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Great suggestion. I don't know anyone with the tools but ill definately see if i can rent them like i do with other specialty tools from the zone.

94' 9C1 20" Lexani Krystals or 14" Chrome & Gold Daytons depending on my mood, Intrax springs, belltech shocks, Moog suspension, body bushings, stealth bolt, Smoothie bumpers, 91 tails, chrome pillars, K&N Intake, Fuel Rail Covers, New interior, custom grill, shaved, powdercoated parts, and so on..
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post #4 of 8 (permalink) Old 07-20-2015, 11:56 AM
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Not used their A/C tools (manifold gauges and Vacumn Pump) but have no issues with certain things from Harbor Freight. Certain tools like a Ball Joint Press, Inner tie rod tool or even their Jacks I got from them and they work fine for the money you pay. Name brand/Quality tools like this from other vendors can cost you a whole bunch more, but in the end are better quality.

As far as more specialized tools like for A/C work, I would suspect for the person who may only use these a few times, you would most likely be ok with something from them if you can't find loaners. If you were looking to get more involved in A/C work, I would not recommend them for anything that would last.

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'95 Caprice SS conversion - Bonny Buckets - 96 Column, Shifter and Console - 3.73 Gear and Herter tune - Z/28 Cluster - Blazer OH Console - Green/Pink bushings - Chromed Impala Wheels - Eibach Springs and Bilstein Shocks - Corvette Engine Dress - the list goes on and still more to do...it never ends.
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post #5 of 8 (permalink) Old 07-20-2015, 02:56 PM Thread Starter
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I completely agree. Ive got jackstands and a few other things from HB. The general quality of their stuff isnt great so i always figure things from there as a one time use. Then if it lasts, its a bonus.

Great news, autozone rents the gauge set and pump for free. It was $312 for the deposit but thats what credit cards are good for. My local store had a brand new oem brand gauge set and 1.8 cfm vacuum pump.

I had no pressure in the lines to start so i checked the compressor and it kicks on when its jumped, i put it on a vacuum for 1 hour and it held pressure for about a minute. All pressure was lost within 10 minutes. Tomorrow i'll add leak dye with some refrigerant and see whats leaking.

94' 9C1 20" Lexani Krystals or 14" Chrome & Gold Daytons depending on my mood, Intrax springs, belltech shocks, Moog suspension, body bushings, stealth bolt, Smoothie bumpers, 91 tails, chrome pillars, K&N Intake, Fuel Rail Covers, New interior, custom grill, shaved, powdercoated parts, and so on..

Last edited by cashmoneyspeed; 07-20-2015 at 09:59 PM.
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post #6 of 8 (permalink) Old 07-26-2015, 04:34 AM
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Good deal on borrowing the equipment. A/C needs to be run at least once a month to keep all the seals happy. We often leave the A/C off for most of the spring and fall. Though some winter defrost duty. Good habit to run the A/C now and then.
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post #7 of 8 (permalink) Old 07-27-2015, 09:57 AM Thread Starter
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Yeah, but with not having it work for so long and a small leak, i picked up new o-rings and some dye. Hoping to play with it again tomorrow and no leaks.

94' 9C1 20" Lexani Krystals or 14" Chrome & Gold Daytons depending on my mood, Intrax springs, belltech shocks, Moog suspension, body bushings, stealth bolt, Smoothie bumpers, 91 tails, chrome pillars, K&N Intake, Fuel Rail Covers, New interior, custom grill, shaved, powdercoated parts, and so on..
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post #8 of 8 (permalink) Old 09-22-2015, 03:22 PM
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Question How'd it go?

CMS,

How did it go? Did you chase down your leak and get it fixed? Did you get your system recharged? I am about to start some major AC work on my 96 and want to here your story and how it turned out.
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