How-to » Body & Interior » Interior, Heating & A/C » How to Replace an A/C Line or Hose

How to Replace an A/C Line or Hose

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Note: This is a general guide for all vehicles.

Parts
  • A/C Hose
  • O-Ring
Tools
  • A/C Machine
Difficulty

Hard

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Steps

This guide requires the following supplies:
  • Refrigerant oil

Safety Tip:
Always wear safety glasses when working on your vehicle. Wear other personal protective equipment (PPE) when necessary, for example latex gloves or closed toe shoes.

1
Open the hood and locate the vehicle's A/C lines or hoses.
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2
Disconnect the negative battery cable using an open ended wrench.
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3
Recover any refrigerant (discharge A/C system) with an A/C machine.
4
Remove damaged A/C lines or hoses.
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5
Install the new o-rings, A/C line, and hose.
6
Reconnect negative battery cable.
7
Evacuate all remaining A/C refrigerant using an A/C machine to pull a vacuum on the system.
8
Recharge the A/C system with the A/C refrigerant and have the A/C system leak tested. Each vehicle takes a different amount of A/C refrigerant which is measured in pounds.
9
Turn on the A/C system with the engine running and check to see if cold air is now coming out of the air duct.
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  • my_ynoh at AutoMD.com
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