- October 25, 2017
- Reaction score
- City, State
- Goddard, KS
- Year, Model & Trim Level
- 2005 Ford Explorer XLT
Correct me if I'm wrong but the blend door redirects the air through the vents or defrost right. If so mine has been broken for a couple of years now, but I still have heat. What I have had problems with in the past when there is no heat is the thermostat quits working properly. The temp gauge will still read in the normal range or maybe a hair below normal. This happens about every 2 years and once I replace the thermostat I have heat. I have tried after market and OEM thermostats but have had the best luck with OEM.
You are correct....it seems everything is working fine and my coolant temps range from 185-194 and never venture over 194. It drops back down so I'm assuming g the thermostat is opening. All my friends swear the heater core is partially clogged. I've attempted to flush it multiple times and even poured some clr in it and let it sit for a few hrs and flushed it out real good.
I'm not sure I want to take on the task of pulling the dash out to replace the heater core but I also don't have the cash to take it to a shop either. I get flow out of the core when I flush it but if its not reaching all the channels of the core then maybe its not distributing the heat like it should.
I was getting 130 degrees out of the vents last night while sitting in my driveway holding at 2k rpm but only 109 degrees at idle. Temps ranged from 105-112 while driving on the highway this morning. Guess ill look into what it will take to replace the heater core.