water won't get hot in coolant and heater wont blow hot


Asked by Mar 01, 2014 at 12:45 PM about the 1993 Ford F-150 S 4WD LB

Question type: Maintenance & Repair

2 Answers


Sounds like your thermostat is stuck open. With engine at operating temp feel the hoses going to the heater core at firewall. Is both cold or Luke warm? If so possibly thermastat stuck open or if you vehicle is equipped with a valve in the inlet hose to heater core it could be stuck closed. Is one hose hot and the other cold? If so your heater core is stopped up. Might try taking hoses off and back flushing water straight thru heater core. When water flows freely both ways hook hoses back up and check for heat in vehicle. If both hoses are hot then you have a damper door/actuator issue under the dash. Hope this helps

1 out of 1 people think this is helpful.

Good job Dandy. Covered just about everything in twelve lines.

Your Answer

Add photo

Related Questions

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
Reputation 6,020
#2 dandyoun
Reputation 3,900
#3 tennisshoes
Reputation 2,300
View All

Related Models For Sale

Used GMC Sierra 1500"
1,025 Great Deals out of 56,906 listings starting at $2,300
Used Dodge Ram 1500"
521 Great Deals out of 13,734 listings starting at $995
Used Ford F-250"
609 listings starting at $3,995
Used Ford Mustang"
736 Great Deals out of 41,064 listings starting at $900
Used Ford Explorer"
1,363 Great Deals out of 71,762 listings starting at $300
Used Ford Ranger"
263 Great Deals out of 7,704 listings starting at $988

Used Cars For Sale

2017 Ford F-150 For Sale
8,164 listings starting at $17,015
2016 Ford F-150 For Sale
149 Great Deals out of 136,859 listings starting at $16,985
2015 Ford F-150 For Sale
235 Great Deals out of 8,875 listings starting at $17,958
2014 Ford F-150 For Sale
502 Great Deals out of 10,890 listings starting at $10,450
2013 Ford F-150 For Sale
721 Great Deals out of 14,746 listings starting at $7,727