Chris,
If you jump just the compressor switch the compressor should engage. If it
does, check the switch with a vacuum source, sucking on a short piece of hose
will do. Once you isolate that, you can move on to other tests. If the fan
doesn't come on when you push the "Auto" button, try pushing the "High Def"
button first and then the "Auto" button, that is a common problem when the
little vacuum check valves get old and dried out.
Roy
67 Crown FDHT
In a message dated 5/11/2004 1:02:02 PM Eastern Daylight Time, "chr gra"
<c_bodycrazy@xxxxxxxxxxx> writes:
>Hey everyone,
>
>I searched the archives and found little help on this.
>
>I charged the system (converted to 134-A) in my '70 LeBaron last night; but,
>I had to run a 'hot' wire to the compressor to get it to run. It has the
>Auto Temp (not the Auto Temp 2 system...please note) HVAC system. System
>could use a partial can of refrigerant yet; but w/in opperating pressure.
>
>What I'ld like to know is if there is something commonly malfunctioning on
>this system to give me a base starting point in diagnosing the problem.
>
>What I have already checked:
>1. 20A fuse...power both sides (heater A/C fuse) (used test light)
>2. No power to compressor (used test light)
>3. No power present at the Low Pressure cut-off switch (used test light)
>4 Vacuum lines all hooked up
>
>I used a test light to check for power; but, I didn't have my Multimeter to
>check how much power was present or the resistances of the switches.
>
>I have located the Master Switch and Compressor Switch under the right side
>of the dash. I didn't test these due to it being midnight, last night.
>
>I have great hopes in working on the A/C tonight. I will have my multimeter
>and vacuum gage/pump to better diagnos the system.
>
>Out of curiosity...if I jump the Low Pressure Switch, Compressor Switch, and
>Master Switch will the A/C compressor run/engage regardless???
>
>Please help as you can. I'ld really like the A/C to work on the Chattanooga
>trip in a couple weeks.
>
>Thanks!
>
>chris
>'70 Imperial LeBaron
>
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