Heat blows cold air
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New User
Joined: Jan 2014
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Heat blows cold air
Hello, I'm new to this forum looking for some help with some trouble I'm having with my truck. During a drive cross country my heat started to go from hot to mildly warm to cold in probably 5 hours. After stopping I checked my coolant level and it was empty. I do have a leaky head gasket and have driven about 18 hours so I'm guessing that's where it went. I could not find a leak anywhere. I filled it back up and left the cap off the reservoir to let any air work it's way out. My heat still blows cold as ice but if I shut off the heat completely and wait ten seconds then turn it back on it will blow warm air for maybe two seconds. Any ideas what this could be? Thanks in advanced!
Elder User
Joined: Sep 2012
Posts: 776
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From: Philly, PA USA
should be filling up straight in the radiator til it reaches almost overflow.... don't worry about letting air escape. It doesn't happen how you think. +1^ he's right
you probably still don't have enough coolant. You need full coolant in order for heat to work, the hot coolant is what gives you the heat.
you probably still don't have enough coolant. You need full coolant in order for heat to work, the hot coolant is what gives you the heat.
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