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    birdielou's Avatar
    birdielou Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jul 7, 2010, 06:31 PM
    2003 s10 4.3 overheating
    Replaced thermostat and water pump engine temperature starts to climb after 6 or 7 miles a/c cools but heater only gets warm
    CaptainRich's Avatar
    CaptainRich Posts: 4,492, Reputation: 537
    Cars & Trucks Expert
    		  
    #2

    Jul 8, 2010, 08:06 AM
    Quote Originally Posted by birdielou View Post
    engine temperature starts to climb after 6 or 7 miles
    Climbs? Does the coolant boil over or the engine overheat, i.e.: temp goes into the HOT range or check gauges message, anything?
    What are the ambient conditions when your truck does this?
    a/c cools but heater only gets warm
    You could have a partially clogged heater core. If you can't verify coolant flow, I'd consider replacing the heater core for this concern.
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