Heater Core And Blower Problems - F150online Forums

Go Back  F150online Forums > Body > HVAC
Heater Core And Blower Problems >

Heater Core And Blower Problems

Heater Core And Blower Problems

  #1  
Old 05-21-2018, 05:28 PM
Junior Member
Thread Starter
Join Date: May 2018
Posts: 1
Heater Core And Blower Problems

I have a 2010 5.4 with 190000 miles. A couple weeks ago the blower started acting up. It would not come on one afternoon so I checked the fuses and relays and everything looked good and since it wasn't fan speed related I figured it was just the blower motor going bad. So I spent $90 on a new blower from Amazon. The next morning I crank it up and the blower is working just fine. A couple days later it goes out again and I figured out I can lightly hit up around the blower in the right spot and it will turn back on. No big deal since i have another on order and hitting it can get me through the week til I can fix it. But after a couple days of "Fonzieing" my blower, I started to notice a smell that could only be antifreeze. Found out that probably meant a bad heater core so I order a new one. Not a fun job but since I recently went through the blend door nightmare repair and had experience removing the dash I figure I could do this myself too. The next day I noticed a puddle on the passenger side right behind the tire (there were no leaks inside though) that was clearly coolant so I parked the truck til the weekend when I could get to it. Weekend comes around and I remove the dash with no problems and get the old heater core out. It is wet and has coolant in the bottom of the box so I'm sure its been leaking. Put new heater core and new blower in and finally get everything put back together. Crank the truck up and the first thing I realize is that the fan still isn't working!!! And then once it gets up to temp it starts dripping in the same place it was before!!! But now there is no antifreeze smell!! So I have no idea where to go from here! Thinking of replacing the heater hoses cause maybe its running down the heater tubes and out the condensation drain. I'm guessing the fan just has a short in the wiring somewhere or the resistor is bad? Its just real hard to believe that a new core is leaking that badly. I've read about coolant electrolysis but it seems like that would still take a couple weeks to eat through a heater core. Anybody have any Ideas cause I'm lost?
 
  #2  
Old 05-22-2018, 12:42 PM
Junior Member
Join Date: May 2018
Posts: 6
Leaking hose or bad clamps? The new cores are made poorly, possibly a bad core. I went thru 2-3 radiators on one of my trucks in 1-2 years.....junky chinese made parts nowadays.....I know....very frustrating!

Check for voltage before and after resistor. You should get a positive reading on both sides of the resistor (one should be 12v not sure on other side but should be a positive voltage).
 
  #3  
Old 05-22-2018, 10:05 PM
glc's Avatar
glc
glc is online now
Senior Member
Join Date: Dec 2006
Location: Joplin MO
Posts: 37,701
Depending on the HVAC system you have it may or may not have a resistor pack. Some are computer controlled.
 
  #4  
Old 12-02-2018, 07:17 AM
Senior Member
Join Date: Apr 2018
Location: NorCal
Posts: 252
how does this one look?
 
  #5  
Old 12-02-2018, 11:23 AM
glc's Avatar
glc
glc is online now
Senior Member
Join Date: Dec 2006
Location: Joplin MO
Posts: 37,701
Jimbo, I think you replied to the wrong thread?
 


Thread Tools
Search this Thread
Quick Reply: Heater Core And Blower Problems


Sponsors

Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: