[Shop-talk] trucks a/c
John T. Blair
jblair1948 at cox.net
Thu May 27 09:07:20 MDT 2010
At 09:21 AM 5/27/2010, Tim wrote:
>I have a 96 S10 with about 171k miles on the 4.6 litre Vortec V6 (a
great motor
>IMO). I haven't had to do much to it beyond basic repairs with the
exception of
>a/c work. Because I can't handle the heat,.....
>A couple days ago I was told the system is charged, pressurized and not
>leaking. And it was cooling down to 68 degrees; not too bad a temp but when
>the truck was "younger", the a/c used to get so cold as to almost
be painful (I
>say almost as I love the cold and where shorts year 'round here in southern
>WI).
Tim,
A couple of point not mentioned by others:
1. Most AC systems (auto, and home) only say they will give 20 below ambiant.
So if you hit 90, then 70 is about right.
2. Do you have the air system in recirc (max) or vented? If not in
recirculate,
the you are mixing ambient with the cold air and decreasing the temp. drop
you can get.
3. How big is you S10. Did they only make that in a standard truck
cap, 1 seat?
I too am very susceptiable to the heat. Over 75, I sweat just
sitting around.
It's not uncommon for me to be outside working in shorts and T
shirt in 40
deg weather. I have a 95 Voyager van with factory 134a. During the
summer, typically in the 90s, I get in the van and am hot. Turn
the AC on
Max and still die. Maybe by the time I get to where I'm going
I've started to
cool off. I've had the system checked several times.
4. Is the 68 deg in the cabin or in the air vents. The plenum temp should get
down to about 40, but the cabin temp will be in the 60s due to head load
from the roof, and glass.
John
>Here is my question: Is there anything that can be done to get the
>system to be colder? Or am I SOL because of the newer freon being
>used? (The guy at the shop basically said there was nothing else
>they can do and didn't charge me for the check up; which is a nice
>thing.) I plan on cleaning out around and in between the two
>radiators this weekend. Hopefully this will help.
>
>TIA for any suggestions
>
>Tim
>Dairyland Datsuns
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John T. Blair WA4OHZ email: jblair1948 at cox.net
Va. Beach, Va
Phone: (757) 495-8229
48 TR1800 48 #4 Midget 65 Morgan 4/4 Series V (B1106)
75 Bricklin SV1 (#0887) 77 Spitfire 71 Saab Sonett III
65 Rambler Classic
Morgan: www.team.net/www/morgan
Bricklin: www.bricklin.org
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