You lastly discovered and also repaired the leaky HVAC problem in your F-150, however now you should recharge it. This article will walk you through the process of effectively recharging your air conditioning to obtain cool air blowing with your vents when aobtain.

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This short article uses to the Ford F-150.

HVAC leaks are a widespread problem in many vehicles, especially once they really begin to rack up the miles. If you"ve experienced symptoms prefer a absence of cooling, quick cycling of the compressor clutch (compressor is turning on and off rapidly), or the clutch doesn"t engage at all, your refrigerant level is likely lower than it needs to be. If there is insufficient refrigerant in the mechanism, the pressure deserve to drop to the point wbelow the system is unable to close the pressure cycling switch. Once you"ve tracked dvery own and also repaired the leak in your system that caused the low refrigerant issue, it"s time to recharge, yet it"s critical that you carry out it the right method to remain legal and stop damaging the setting. Keep analysis and we"ll walk you through the process.

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Materials NeededOne or two cans of R134a (via hose and gauge attached)Assorted prevalent size sockets/wrenches (optional)

Tip 1 – Locate and also open up the low press valve

The low push valve is situated under the hood on the passenger side, in the rear corner, tucked underneath either the dryer cylinder or a fuse box, depending on which version truck you have. Tbelow are 2 bolts that organize the dryer cylinder in location on the side—rerelocate the 2 bolts and pull it up simply enough to access the low push valve. While holding the dryer cylinder out of the method via one hand also, unscrew and also rerelocate the low pressure valve with the other hand also. If yours is situated under the fuse box, you can sindicate rerelocate it without having to disaffix anypoint.

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

Tip 2 – Recharge the system

Connect the hose from a can of the refrigerant to the low pressure valve. Start the truck and also turn your air conditioning on high, and make sure the vents are open. Keep in mind the pressure analysis on the valve, which need to be at leastern 45 psi. If it"s below 45 psi, there isn"t enough refrigerant in the device and it have to be recharged. Pull the handle or press the switch on the refrigerant can to start filling the mechanism, maintaining an eye on the gauge. Use a secondary have the right to if one isn"t enough. Fill until you reach approximately 55 psi, which is a safe level that ensures you aren"t overcharging the device (and also bring about some expensive damage). Once full, revolve off the truck and disaffix the hose. Replace the valve cap and also any type of components you had actually to rerelocate to obtain accessibility to the valve.

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

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Figure 7. Fill the device via refrigerant until you reach around 55 psi.

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