Question about 1999 Ford Explorer
When below freezing outside the heater fan will not turn on. Even after running the engine for 20 - 30 minutes it does not work. When outside temp is above freezing it works fine.
Not only water but moisture build up on an old blower motor can cause the same. As these motors get old they build up grime with the lubricant and freezing weather can have a serious effect on vicosity and it doesn't take much to stop an old motor. Try getting some carb spray to clean each end of the motor (the base of the rod holding the fan blades and the other end) These ends house the bearings were sludge builds up then lube with some WD40 spray. If that doesn't work then its time to replace it.
Posted on Nov 06, 2014
I am having the same issue. Did you ever find out what was causing it?
Posted on Nov 04, 2014
There could be water entering the blower motor that is freezing and not letting the motor spin. You can remove the blower motor and inspect for water. If there is water in the motor... the source of the leak will have to be pinpointed.
Posted on Dec 07, 2012
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Posted on Jan 02, 2017
This could be a few different problems. I would recommend taking it in and having the antifreeze checked to see if it is of a sufficient mix to keep it from freezing. Sometimes the antifreeze will be to thin to keep it from freezing and it will start to freeze in the heater core. If this is the case, the vehicle may not run long enough to thaw out the antifreeze in the heater core to generate heat. Another possibility is that the thermostat is stuck in an open or partially open position not allowing the engine to reach a high enough temperature to generate heat through the heater core. The last possibility is that there is a blockage in the heater core not allowing the hot antifreeze to pass through the heater core thereby reducing the amount of heat drawn off of the heater core. These are but a few of the more simple problems but any of them should be treated by a licensed mechanic.
Posted on Dec 26, 2009
Testimonial: "helpful.tested all suggested solutions but did not change thermostat. coolant level and protection is good, heater core,upper and lower rad hoses hot"
Find where both hoses are going to the heater core from the firewall side after engine is up to temp.Touch them with your hand.If they are both quite warm the water is flowing thru the heater core. If only one is hot the core is stopped up. If both are hot and still no heat the heater door in the heater box is staying closed.
Posted on Jan 15, 2010
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For car running hot and overheating issues, I suggest to you go through this help links.
Click this link below and go through the troubleshooting procedure to take care of the problems: ----
Car runs hot?
All types of car overheating problems and troubleshooting?
Car freeze overnight and started overheating while driving?
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----------This details will help.Thanks.
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