Even on the evac machines...we still charge on the low side (old fashioned
way). You add what's required by the manufacturer.
In the TX heat/humidity, you need to evacuate for a minimum of 15-20 minutes
with a good vacuum pump, not the air-hose vacuum machines either (got one of
those myself). Lifting the vehicle has no bearing on the A/C system either.
If you're in the Austin area...stop by the dealership and I'll check it out
for ya.
- Bernd
-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Hop *
Sent: Thursday, June 24, 2004 1:57 PM
To: dakota-truck@dakota-truck.net
Subject: RE: DML: Air Conditioning
Bernd , The fan is working because it roars when i take off from a light.
When a shop charges the A/C system they add the freon per ounce. What ever
the system requires. It states it on the sticker under the hood. But if you
don't have a scale it's hard to do it that way. The way i've allways seen
shade tree guys do a/c is by the low side
pressure.
And they charge it as close as possible to 32* on the low side at 2000 RPM.
I think i might know what my problem is. Either they didn't evacuate the
system long enough after they installed the new evaperator. Or now that i
have a body lift it must have taken away from the cooling of the stock fan.
I didn't remember having this much of a problem lastyear. And i had both
done allready. Or maybe the condenser has trash in it..
Ugh, i may just take it to a shop.
--Hop
>From: "Bernd D. Ratsch" <fasstdak@hotmail.com>
>
>Charging the system at 2000rpm has nothing to do with anything. You
>put
>the
>system under a vacuum and refill after the vacuum has completed (15-20
>minutes on the average but can require up to 30-45 minutes). This can be
>all done with the engine off - the A/C system doesn't care at what RPM it's
>being charged at.
>
>If it's cooling at normal speed but not a idle, I'd be looking at the
>fan clutch first.
>
>- Bernd
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This archive was generated by hypermail 2b29 : Thu Jul 01 2004 - 00:15:17 EDT