heater runs on all speeds but no heat.

Asked by Nov 05, 2014 at 06:59 PM about the 1999 Ford F-250 Super Duty XLT Crew Cab LB

Question type: Maintenance & Repair

the heater will not blow any heat no matter where I set the selector.

2 Answers


Heater core is probably clogged.

4 out of 4 people think this is helpful.

check your fluid level. when was the last time the cooling system was flushed? If you flush the system change your stat.

2 out of 2 people think this is helpful.

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