Question about 1998 Ford Explorer
It appears that your air conditioning system is low on refrigerant. Anytime you have higher RPM's then the air conditoning compressor turns faster and if the A/C system is low on refrigerant, then there is not enough refrigerant for the compressor to pump and so it cycles itself off and you start getting warmer air out of the vents. When the vehicle is idling & the A/C is on, open the hood and look & listen if the A/C compressor is cycling off & on by itself. If it is, then you are definitely low on refrigerant. If it is not cycling, you can also check to see if the refrigerant is low by checking the outlet tube of the evaporator. The evaporator is located under the hood on the firewall on the passenger side of the vehicle. It is usually a black plastic box that is bolted to the firewall. With the vehicle idling & A/C on, use your fingers to touch the aluminum tube (about 3/4 inch in diameter) coming out of the top of the evaporator case. If it is not cold, you are low on refrigerant. Hope this helps.
Posted on Jul 30, 2009
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Posted on Jan 02, 2017
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