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Diagnostic Help

joshtypesn on Wed September 30, 2009 10:02 PM User is offline

Year: 1995
Make: Ford
Model: Explorer
Engine Size: 4.0
Refrigerant Type: r134a
Ambient Temp: 90
Pressure Low: 40
Pressure High: 400
Country of Origin: United States

Just replaced my entire AC system, everything short of the pressure sensor and clutch cycle sensor. The AC ran only margional (60-70 degrees) for about a week and then stopped, when I put the gauges on I read 40 on the low side and it went to about 400 on the high side. When i first charged, I only charged to about 35 on the low side and 220 on the high. Any help appreciated. Thanks Josh

Dougflas on Wed September 30, 2009 11:39 PM User is offline

Hose down the condenser and see if the high side drops dramatically. If so, you should look for an airflow problem across the condenser. Most likely, you have a defective/weak fan clutch.

TRB on Thu October 01, 2009 12:21 AM User is offlineView users profile

You need to have the proper amount of refrigerant for the system type, single or dual evap. Best to reclaim, evacuate and recharge to the proper specifications. Once you have a known charge level we can help with the issues you may have.

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Chick on Thu October 01, 2009 7:09 AM User is offlineView users profile

When you recover the refrigerant, pull the O tube again and recheck it for debris, then as Tim stated, recharge the "factory" amount back into a deep vacuum, don't charge by pressures on a factory system.. Hope this helps..

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

HVargas on Thu October 01, 2009 11:09 AM User is offlineView users profile

Define replacing everything. Were the components properly flushed? What kind of flush did you use? Did you use virgin R134a or did you use something with a "booster" or sealer in the can?

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: Arizona Mobile Air

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