Automotive Air Conditioning Information Forum (Archives)

ldj1002 on Fri June 22, 2012 11:42 AM

Year: 2002
Make: Ford
Model: Crown Victoria
Country of Origin: United States

A few weeks ago blower went out. I got help here on the forum. I replaced blower motor, still wouldn't blow. I them replaced resistor and it worked perfect, Now 3 days later blower wouldn't come on. When I rotate the blower speed control all way up to it will come on. When I try to lower blower speed it won't, only runs on high. What now?

GM Tech on Fri June 22, 2012 12:13 PM

Blower motor relay is inop or bad connections

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The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

ldj1002 on Fri June 22, 2012 2:38 PM

Where is that relay?

mk378 on Fri June 22, 2012 5:42 PM

Resistor could have burnt out. Pull resistor and inspect. Also check the resistor plug for any melting / burning. A mouse nest in the ductwork will impede airflow to the resistor.