Question about 1997 Pontiac Sunfire
When i turn the car on it warm and tempeture is normal,but when i start drivin the tempeture drops and heater gets kind of cool, and then the tempeture goes up again heater is fine. this happends as i drive every day.
Poor coolant flow water pump? air lock in system? bring to operating temp shut down than open air bleed screws.
Posted on Jan 03, 2014
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Posted on Jan 02, 2017
ok, its time for a radiator flush. there is major sludge in the internals of this radiator. Make sure the thermostat is in the correct position as well. I've seen many cars come into my shop with the thermostat inserted backwards.
Posted on Mar 13, 2009
Are you sure you got all the air out of the cooling system? Air pockets are very common problem when you do any work to the cooling system. An air pocket will do what you discribe.
Posted on Mar 18, 2009
when you overheat an engine. certain parts expand more than usual. like pistons, crankshaft and camshaft bearings. im afraid its time to overhaul the engine. inspect for cracks etc...
check the oil on the dipstick...if it looks like a milkshake...you cracked something...head or block......sorry dude for the bad news. good luck
Posted on Apr 08, 2009
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