You finally discovered and repaired the leaky HVAC trouble in your F-150, but now you have to recharge it. This article will certainly walk you via the process of effectively recharging your air conditioning to gain cool air blowing with your vents once again.

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This post uses to the Ford F-150.

HVAC leaks are a prevalent concern in most vehicles, particularly once they really begin to rack up the miles. If you"ve knowledgeable symptoms prefer a lack of cooling, rapid cycling of the compressor clutch (compressor is turning on and off rapidly), or the clutch does not engage at all, your refrigerant level is likely lower than it demands to be. If tright here is inadequate refrigerant in the mechanism, the pressure deserve to drop to the allude wright here the system is unable to close the pressure cycling switch. Once you"ve tracked dvery own and repaired the leak in your system that led to the low refrigerant problem, it"s time to recharge, yet it"s crucial that you execute it the right method to stay legal and avoid damaging the setting. Keep reading and we"ll walk you through the procedure.

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Materials NeededOne or 2 cans of R134a (through hose and also gauge attached)Assorted prevalent size sockets/wrenches (optional)

Tip 1 – Locate and open the low press valve

The low press valve is located under the hood on the passenger side, in the rear edge, tucked underneath either the dryer cylinder or a fusage box, depending on which design truck you have actually. Tbelow are two bolts that hold the dryer cylinder in area on the side—rerelocate the 2 bolts and also pull it up simply enough to accessibility the low push valve. While holding the dryer cylinder out of the method via one hand, unscrew and rerelocate the low press valve through the various other hand also. If yours is located under the fusage box, you deserve to sindicate remove it without having actually to disconnect anything.

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Figure 1. Rerelocate the bolts to access the low press valve.
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Figure 2. The low pressure valve is situated underneath this box.
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Figure 3. Gaining accessibility to the low pressure valve.
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Figure 4. Unscrew and remove the valve cap.

Tip 2 – Recharge the system

Connect the hose from a have the right to of the refrigerant to the low push valve. Start the truck and revolve your air conditioning on high, and also make certain the vents are open. Keep in mind the pressure analysis on the valve, which must be at least 45 psi. If it"s listed below 45 psi, tright here isn"t sufficient refrigerant in the system and also it should be recharged. Pull the take care of or push the switch on the refrigerant have the right to to start filling the device, maintaining an eye on the gauge. Use a second can if one isn"t enough. Fill until you reach about 55 psi, which is a safe level that ensures you aren"t overcharging the mechanism (and bring about some expensive damage). Once complete, turn off the truck and also disattach the hose. Rearea the valve cap and also any kind of components you had actually to rerelocate to obtain access to the valve.

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Figure 5. Hook up the hose on the refrigerant can to the low press valve.
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Figure 6. Start the truck, turn on the air conditioning, and take note of the psi presented on the gauge.

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Figure 7. Fill the device through refrigerant until you reach about 55 psi.

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