Heater

Asked by GuruDJYR3 Oct 01, 2017 at 10:55 AM about the 1999 Ford Expedition 4 Dr XLT SUV

Question type: Maintenance & Repair

Heater blows hot on lowest speed. But blows cold
when on high. What do I check first?

1 Answer
22,650

Guru9FSV8 answered 7 years ago

Is your antifreeze full? Find your heater core hoses on the firewall and lightly touch them while running to see if heater core is circulating coolant? Maybe need to flush this out. YouTube videos on this.

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