Heat not working in Explorer

Old 12-29-06, 12:55 PM
Thread Starter
Join Date: Dec 2006
Posts: 1
Received 0 Votes on 0 Posts
Heat not working in Explorer

I have a 1998 Ford Explorer. The air from the heater never gets hot. What are the possible causes?
Old 12-29-06, 01:08 PM
HotxxxxxxxOKC's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Jul 2006
Location: USA
Posts: 8,033
Received 0 Votes on 0 Posts
1. Bad Thermostat

2. Clogged/air locked radiator

3. Heater control valve

I would first replace your thermostat. Very cheap and fairly easy task. If that has no result, flush your coolant system.

You can check for clog by feeling the two heater hoses going into your heater core (firewall). If one of them is hot, and the other colder, then you have a clogged heater core. If both hoses are cold, then you have a clog/air lock in the radiator and/or hoses or the thermostat.
Old 12-30-06, 02:18 PM
hogfan's Avatar
Join Date: Oct 2003
Posts: 352
Received 0 Votes on 0 Posts

Feel both heater hoses going inside the firewall. If both are hot than check the blend door. I have seen this doors break.
Old 12-31-06, 10:10 AM
Unclediezel's Avatar
Join Date: Dec 2006
Location: Northeastern PA.
Posts: 2,230
Received 0 Votes on 0 Posts
Hog fan has it nailed. I replace 4 a month. Call your local ford dealer and request a copy of the technical bulletin on lack of heat and blend door upgrades. They sell a new heater box and blend door motor to correct a problem theyve had since 92 or 93.

Thread Tools
Search this Thread
Ask a Question
Question Title: