First, of you had to put ref in, you must have had a leak and if you did nit
fix it you will be out of ref again. Next, be usre you put the right kind
oin (R12 or R134). These are not compatable and cannot be mixed and require
a different type of oil in your compressor. if you put the wrong type in it
will not cool well and your compressor may self destruct soon. Also, the
suction pressure is dependent on the temp of air in the cab. the colder it
gets the lower the pressure will be. Also the pressure on the suction side
will be lower if you rev the engine above idle speed. There should be a
label somewhere near the radiator that tells how much you are supposed to
put in if the system is empty. If you have air in the system it will not
cool well either. You should have the system checked by a A/C shop before
you ruin costly parts.
----- Original Message -----
From: "Peter Grace" <pgrace@fierymoon.com>
To: <dml@dakota-truck.net>
Sent: Sunday, June 29, 2003 4:53 PM
Subject: DML: Air Conditioning Recharge
>
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Hey guys,
>
> I finally was fed up with this hot weather and fed up with
> my non-functional A/C system. While I was at walmart
> getting wiper blades for Kristy's car, I opted to buy one
> of those A/C recharge kits from interdynamics. I got the
> kit with the pressure valve on it (Wow, useful little piece
> of technology)..
>
> Anyway, I charged up my system and now finally my A/C
> compressor stays on instead of momentarily turning on, then
> staying off for a few seconds, then turning back on (I
> guess it has to do with refridgerant pressure -- I learn
> something new everyday!). The air is, eh, somewhat cool...
> It's not like I'm going to get frostbite, like how it is
> in Kristy's Honda. I read something somewhere that if you
> overpressurize the system, the AC will not put out maximum
> chill. I currently have the charge at about 42-43psi with
> the A/C on, which is within the "operational range" of the
> gauge (the blue area).
>
> My question is thus: Do you guys know of the particular
> pressure which allows you to achieve maximum cooling?
> After driving around for 10 miles or so it was comfortable,
> on the side of cool inside the club cab, but, that was 20
> minutes... Should it really take 20 mins for the dakota to
> get cool from a nice hot day like today? The thermometer
> at willow grove says 82F with a relative humidity 54.6% and
> barometer at 30.13in. I know that atmospheric conditions
> can alter the pressure readings of one of these gauges. My
> guess is that in my asphalt parking lot with the sun
> beating straight down on the truck, the temperature under
> the hood was in the high 90's.
>
> Any suggestions would be appreciated, you guys have helped
> me before with a lot of other stuff! Not a day goes by
> that I don't learn something new about the care and
> maintenance of my baby!
>
>
> Thanks,
> Pete
>
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This archive was generated by hypermail 2b29 : Fri Feb 06 2004 - 11:46:32 EST