Question about 1998 Chevrolet S-10 Pickup
Over the last two years I've had the radiator replaced and thermostat installed. Has V6 Vortec egine
Sounds like a clogged heater core. You may be able to disconect the heater hoses and back flush it with waterhose. Without draining all the coolant from the engine just put a good dized pan under the hoses and push length of hose on both inlet and outlet ru inlet to pan then blowing in the other to recover coolant from core and give some idea if its clogged.
Cars used to. Have a vale to stop the flow to the core but not so much any more.
You may have a bad water pump.
On on of mine the impeller blades had completely corroded or eroded away and it moved no hot water at all
Worst case senario:
New pump, heater core, coolant, check freeze plugs for rusting through and hoses as well as flushing tge blocks waterjacket for rusty debris that will plug up the core again and erode a new impeller.
Posted on Dec 22, 2016
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Sounds like you have a restriction in the heater core. You can try removing the heater hoses at the firewall and putting a garden hose to the bottom inlet to reverse flush the core, if this is unsuccessful you will probably need to have the core replaced.
Posted on Dec 22, 2016
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Posted on Jan 02, 2017
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Engine Overheats and heater blowing cold?
Heat blows cold on drivers side and hot on passenger side?
This will help.Thanks.
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