On Thu, 10 Jul 2003 17:52:21 -0400, "Darryl Cummings"
The EC button turns off the compressor. But you won't get the
compressor to run at all if the refrigerant pressure is too low.
Regardless, you charge the system without running the compressor
The proper way to charge it is with the system OFF, after pulling a vacuum, put
the exact, correct amount of R-134 in by weight. Yes, this requires a vacuum
pump and a scale.
425 White Horse Pike
The EC button is a EConomy button to block the compressor from
operating. Default is for the compressor to run, EC prevents that.
The fuses in your car are located below the rear seat, right side, next
to the battery.
You can short the pressure switch (pull the connector off the switch and
insert a "U" shaped wire), which I am assuming is keeping the compressor
clutch from engaging. Get the R-134 connected to the suction side, can up
side down and engine off. Open a 1# can's valve. Shake the can every few
minutes to see if it's getting lighter. When about half empty, turn the can
upright. Now start the engine and turn the AC on to as low a temp as it will
go to. If the clutch still doesn't engage, short the pressure switch. Watch
the sight glass for bubble flow. After 30 seconds, unshort the plug and
reconnect to switch. See if there's enough system pressure to engage the
clutch. Keep adding refrigerant, can upright, until you see very few bubbles
flowing (mostly liquid). That should be enough. Check the bubble flow in a
few days when it hot outside.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.