DieselSite Max AC kit... does nothing. - Ford Powerstroke Diesel Forum
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post #1 of 15 Old 07-13-2011, 03:08 PM Thread Starter
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DieselSite Max AC kit... does nothing.

Installed one, ac blows exactly the same, to the degree, with the valve open or closed... save your money, IMO.

Claim from their website: "This automatic heater core shutoff valve greatly decreases AC air temperatures"... nope.
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post #2 of 15 Old 07-13-2011, 03:47 PM
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I have read some ppl that say a valve there helps and others that don't. I don't think mine helped. Maybe like one degree. Either way I only spent like 15 bucks on a valve and line. So I didn't care.


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post #3 of 15 Old 07-13-2011, 04:26 PM
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I've read some mixed reviews on them, some love them and say they freeze out the truck, and othere say nothing has changed. I have one sitting in my garage waiting for me to install, I guess I'll get around to it this week and see if it does anything. Unfortunatley the weather has been so horrible here (even by Seattle standards) it'll be hard to tell, we're talking rainy and low 60's in mid-july...
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post #4 of 15 Old 07-13-2011, 04:33 PM
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When I had a mustang, back in early 2000's there was a company that made a retrofit during the R134a conversion and could get frost on the vents, my A/C sucks



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post #5 of 15 Old 07-13-2011, 05:00 PM
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I guess these trucks are known for having so-so A/C from day one, even when it's working properly. I remember my 96 Toyota 4runner (still had R-12, said right on the compressor) would absolutely freeze you out, no matter how hot it got. I had that thing sitting in traffic on a 101* day and I had to open the windows every so often to keep from getting too cold, and that was on the lowest setting. Nothing worked as well as the old R-12 when they really perfected the A/C systems for R-12 right before the big change over.

Damn hippies will be the death of us, first A/C was their target, now diesel trucks and light bulbs, what's next??
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post #6 of 15 Old 07-13-2011, 05:07 PM
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R-134a cools better then R-12. Just R-12 systems usually had a larger capacity so they wern't as susceptable to extreme heat. You can make any system cool as well as you want, you just need a different size fixed oriface. As long as all the other components are up to par.

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post #7 of 15 Old 07-13-2011, 05:14 PM
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Quote:
Originally Posted by late_99_PSD View Post
R-134a cools better then R-12. Just R-12 systems usually had a larger capacity so they wern't as susceptable to extreme heat. You can make any system cool as well as you want, you just need a different size fixed oriface. As long as all the other components are up to par.
yea i have heard something about a diffrerent size office tube and it will get things cold but to be carefully cause it can freeze up.
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post #8 of 15 Old 07-13-2011, 05:16 PM Thread Starter
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Quote:
Originally Posted by late_99_PSD View Post
R-134a cools better then R-12. Just R-12 systems usually had a larger capacity so they wern't as susceptable to extreme heat. You can make any system cool as well as you want, you just need a different size fixed oriface. As long as all the other components are up to par.
Yup... unless your air door isn't closing properly and hot air is getting by the Dieselsite kit will not change the vent temperatures of your AC at all. Replacing the orifice will!
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post #9 of 15 Old 07-13-2011, 06:22 PM
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Any info on how to change out the orifice tube and which to put in?

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post #10 of 15 Old 07-13-2011, 08:58 PM
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Originally Posted by belz View Post
Any info on how to change out the orifice tube and which to put in?
I am curious as well, I am always looking for ways to frost up my windows since I do spend a lot of time in the desert SW during the summer.
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