Jump to content

Interior Heat Issue


Recommended Posts

So I flushed out my heater coil with garden hose full water pressure and everything was working great. I drained and refilled the coolant too. then very little heat,

fan blower is good, Actuator door motor is good. I pinched the bypass hose tight with permanent clamp to force coolant through the coil and more heat but not enough.

What could possibly be clogging the coil? Is there any additive to dissolve clogs?

Link to post
Share on other sites

Welcome to the forum.

 

In a case like this vehicle identification may be useful.

 

My speculation is that the coil is not plugged. That is very easy to determine by disconnection of both heater core hoses, then squirting garden hose water into one and observation of good flow out the other.

 

My speculation is the most likely issue is an air bubble that needs to be "burped". Many vehicles have a bleed screw on the thermostat housing, to bleed air. That is a great starting point.

 

The second possibility is that the blend air door isn't routing cabin air over the heater core.

Link to post
Share on other sites
  • 2 weeks later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Member Statistics

    15,515
    Total Members
    5,540
    Most Online
    samy65
    Newest Member
    samy65
    Joined
×
×
  • Create New...