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Correct Pressures for 96 GEO Tracker

Don on Mon July 07, 2008 8:04 PM User is offline

Year: 1996
Make: GEO
Model: Tracker
Engine Size: ?
Refrigerant Type: 134A
Ambient Temp: 90
Pressure Low: 45
Pressure High: 260
Country of Origin: United States

I can’t seem to get the vent temps down below about 50 degrees on this vehicle. I suspect the expansion valve is malfunctioning. I charged the system up until I got the low side up to about 45 psi and the high side at about 260 psi. (ambient air temp was about 90 degrees). The condenser is not clogged up and the condenser fan is running. Looking at the site glass the refrigerant looks like white foam. Here’s what makes me think the problem may be the expansion valve, as I was watching the gauges with the truck idling and scratching my a$% trying to figure out what could be wrong, the high side started to rise, slowly going over 360 psi and then slowly came back down to 260 psi. Before I rip this thing apart I would like to know for sure what the pressures should be. If anyone has any suggestions please let me know.

TRB on Mon July 07, 2008 8:49 PM User is offlineView users profile

Why not charge the system to the correct refrigerant capacity (21 ounces) before ripping things a part?

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Chick on Mon July 07, 2008 9:01 PM User is offlineView users profile

I agree, you may have air in the system or overcharged it. Recover, pull a deep vacuum and charge the factory amount back into the vacuum, then the pressures can tell us if there is a problem..Hope this helps..

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Email: Chick

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