tips on A/C service

The club for Nissan Maxima and Infiniti I30 / I35 owners, and the official home of Maxima Club of America!
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Bow Tie Guy
Posts: 16
Joined: Sat Nov 05, 2005 7:04 pm
Car: 90 300ZX 2+2

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Last year my buddy took His Contour in to have the R134A toppedand a basic check, The shop told Him they couildn't find a leak and they didn't know what the problem was.

That night I suggested he replace the Schrader valve cores, as I'd learned previously that they were a common source of leakage.Reluctantly He did as I suggested, after His Wife pleaded with Him to try it

He already had his own manifolds & guages, and figured what the HeckHe went to the local neighborhood ford Stealer and ordered the valve cores, a week later He installed them, and what do you know the Wife has a A/C and I'm a hero

Which brings me to todays A/C Tip I had picked up a Schrader valve kit for my Gen 4 at my local Napa last week as the temps actually soared to 100 here in the O.C. . I'm 4 miles from the water, and it was sweltering Hot MUST HAVE A/C So Today, instead spending 25.00 on R134 at wally world I had a great idea.

I'll pop into my local neighbrhood garage with the schraders in my hand and proclaim "Hey Guy" How much to vaccumthis sucker down, put these schrader cores in and refill the system?without giving me clue as to what i was looking at the Guy said bring it back tommorow after lunch............

Popped back in there after Lunch today, and they installed the schrader cores and evacutuated the system, 45 minutes later I drove out of there with my balls freezing cost 5.00 more than I would spent on 24oz of refridgerant.............. Hope you enjoyed my A/C service tip as much as my Freind Bill's wife & I did

R134A


NutriaforBreakfast
Posts: 1316
Joined: Wed Sep 26, 2007 1:41 pm
Car: Nissan Maxima 1995 VQDE engine

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You can poor soapy water on them sometimes and there are bubblesif its leaking

So did you change out the schraeder valves or just the CORES of thevalves?

My car isnt cold enough (95 maxima)

MCovington
Posts: 59
Joined: Thu Feb 08, 2007 6:51 pm
Car: 1995 Q45

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My 01 I30 was only putting out 60 degree air on A/C. I bought a can of Artic Freeze at Advance. This unit has a built in gauge on the head unit. I only had 24 LBS on the Low side and pumped in some 134a and looked at the temp and it was putting out 42 degrees. The unit was 22 dollars and is easy to use. You might be just a little low. They make a dye you can inject and use a UV light to find leaks. Not sure if the 95 models have 134a.

NutriaforBreakfast
Posts: 1316
Joined: Wed Sep 26, 2007 1:41 pm
Car: Nissan Maxima 1995 VQDE engine

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Glanced at haynes last night regarding AC service on my95 maxima

It says if the AC is just a little warmer (still functioning) toadd a little freon

But if it is not cooling at all, to check the clutch and possiblyadd some oil

Anyone just add any oil through the low pressure valve? Idont know if you can even buy any. I would like to try toadd one ounce just to be sure the compressor isnt dry


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