Mufasa556
Elite Explorer
- Joined
- March 21, 2006
- Messages
- 6
- Reaction score
- 1
- City, State
- Denver, CO
- Year, Model & Trim Level
- 1999 XLT
2016 XLT
TLDR; no heat but actuator and blend door do work.
I’ve had my 99 Explorer since I got it in 2004 when I was 16. I got it with 70k and it’s now got 208k, but it’s been sitting for the last handful of years in the back paddock. It’s my favorite little truck and after all these years I still can’t part with it. My summer plan has been to get it back into shape to causally daily drive again (new wheel hubs, CV axles, replace all the front suspension parts).
A couple winters ago, I found the heater was only blowing luke-warm air so I replaced the blower motor, t-stat and topped off the coolant. It didn’t really help. Rather than digging into it, I bought an F-150 to survive the CO winters. Hence why the Explorer has just been sitting out in the yard for a few years.
This last month I started tackling the heating issue. Replaced the blend door actuator and found it to still be functioning correctly. I then cut into the box to replace the blend door and found that actually works correctly too.
Now I’m stumped.
From the heater control valve (HCV), the passenger side hose to the heater core is hot while the driver side hose remains cool (or engine bay temp) to the touch.
I bought a new HCV and plan to do a heater core flush when I replace the HCV.
Before I start taking things apart and throwing parts at it, is there something I’m missing that could be causing this heat issue? Vacuum leak?
And since everyone loves pictures. Here’s my 2nd gen with my 5th gen. I need to sharpie the puddle lights red again like I did in high school.
I’ve had my 99 Explorer since I got it in 2004 when I was 16. I got it with 70k and it’s now got 208k, but it’s been sitting for the last handful of years in the back paddock. It’s my favorite little truck and after all these years I still can’t part with it. My summer plan has been to get it back into shape to causally daily drive again (new wheel hubs, CV axles, replace all the front suspension parts).
A couple winters ago, I found the heater was only blowing luke-warm air so I replaced the blower motor, t-stat and topped off the coolant. It didn’t really help. Rather than digging into it, I bought an F-150 to survive the CO winters. Hence why the Explorer has just been sitting out in the yard for a few years.
This last month I started tackling the heating issue. Replaced the blend door actuator and found it to still be functioning correctly. I then cut into the box to replace the blend door and found that actually works correctly too.
Now I’m stumped.
From the heater control valve (HCV), the passenger side hose to the heater core is hot while the driver side hose remains cool (or engine bay temp) to the touch.
I bought a new HCV and plan to do a heater core flush when I replace the HCV.
Before I start taking things apart and throwing parts at it, is there something I’m missing that could be causing this heat issue? Vacuum leak?
And since everyone loves pictures. Here’s my 2nd gen with my 5th gen. I need to sharpie the puddle lights red again like I did in high school.
