The heater pipe in a 2007 Honda CRV is a crucial component of the vehicle's cooling system. Over time, this pipe can develop leaks or corrosion, necessitating replacement. This guide will walk you through the process of replacing the heater pipe in your Honda CRV.

Tools and Materials

Before starting the replacement process, gather the following:

  • New heater pipe (part number 19510-r40-a50)
  • Socket set and ratchet
  • Pliers
  • Screwdrivers
  • Coolant
  • Catch pan for coolant
  • Clean rags

Preparation

Begin by parking your CRV on a level surface and allowing the engine to cool completely. Safety is paramount when working with hot coolant. Once cooled:

  • Disconnect the battery
  • Remove the air filter housing and intake manifold
  • Locate the heater pipe, which connects the thermostat housing to the heater core

Draining the Coolant

To replace the heater pipe, you'll need to drain the cooling system:

  • Place a catch pan under the radiator
  • Open the radiator petcock to drain the coolant
  • Remove the radiator cap to aid drainage

Removing the Old Heater Pipe

Carefully follow these steps to remove the old pipe:

  • Disconnect any wiring harnesses attached to the pipe
  • Remove the bolts securing the pipe to the engine
  • Gently detach the pipe from the thermostat housing and heater core
  • Be prepared for some residual coolant spillage

Installing the New Heater Pipe

With the old pipe removed:

  • Clean the mating surfaces thoroughly
  • Apply a thin layer of coolant to the O-rings on the new pipe
  • Carefully insert the new pipe into the thermostat housing and heater core
  • Secure the pipe with the bolts, ensuring not to overtighten
  • Reconnect any wiring harnesses

Refilling the Cooling System

After installation:

  • Close the radiator petcock
  • Refill the cooling system with the appropriate coolant mixture
  • Start the engine and check for leaks
  • Top up the coolant as necessary

Final Steps

To complete the job:

  • Reinstall the intake manifold and air filter housing
  • Reconnect the battery
  • Run the engine to operating temperature and check for proper heater function

Common Challenges

During this repair, you may encounter:

  • Rusted bolts: Use penetrating oil and patience
  • Tight spaces: Remove additional components if necessary for better access
  • O-ring damage: Always replace O-rings to prevent future leaks

Remember, if you're not confident in your mechanical abilities, it's best to consult a professional mechanic. This job requires careful handling of coolant and intricate engine components.

FAQs About Honda CRV Heater Pipe Replacement

    • How often should the heater pipe be replaced?
      There's no set interval, but inspect it during regular maintenance for signs of wear or leaks.
    • Can I drive with a leaking heater pipe?
      It's not recommended as it can lead to engine overheating and further damage.
    • How long does the replacement typically take?
      An experienced mechanic can usually complete the job in 2-3 hours.