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Old 12-06-2010, 03:01 PM
jacksonbase jacksonbase is offline
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Default heater just started blowing cool

Hi

I've got a 5.9 1996 2wd lariat. I recently replaced water pump belts etc...
My heater just stopped blowing hot. the truck will warm up and start blowing a little warm but the more you drive it turns cool.

Both heater hoses are hot
blowers work fine
temp sits at 198 once warm
a/c works fine

My question does this sound like a clogged heater core or blend door. Also how do I check to see if blend door is functioning properly? also I do get some gurgling in the dash from heater core (what is the cause)?

thanks

Jacksonbase
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