1990 Chevrolet Lumina "heat blows cold air" Questions

...blows cold air from top vents after running for 1.3 hours After an hour and twenty minutes of running the heater my car's heater begins to blow cold air out of the top vents and loses warmth out of ...

heat on a 1990 chevy lumina car. blows cold. car blows cold air out of the vents, floor and defroster. Consider a blocked heater core. this might be just a fault in the vents etc. but let the car warm

...no heat or defroster at all. Just blows cold air. Only have a temp. guage, it works fine....and plenty of antifreeze. open pasenger door there on side of dash or unde hood neer driverside ...

...cold out, but it will be as it warms up outside. I don't know if this is related to the other issues. Any ideas or help would be greatly appreciated! Please check your engine oil and transmission oil ...

Heat blows cold on drivers side and hot on passenger side? http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html---------- Hot air on the driver's side vents only?

...heat it blows out cold air. Heater blows only cool air...even w/ defroster on : Buick ... repairpal.com > Problems > Buick > LeSabre ... Cadillac, Chevrolet, Chrysler, Dodge, FIAT, Ford, Geo, GMC, ...

Heat blows cold air front and rear when sitting still or @ low mph. When sitting still @ norm. operating temp, Heat blows cold air front and rear. At around 35 to 40 mph, the heat will blow warm to ...

Heat blows cold on drivers side and hot on passenger side? http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html ---------- No heat, blower blows only cold? http:/

Heat blows cold on drivers side and hot on passenger side? http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html ---------- Hot air on the driver's side vents only

...heat just blows cold air For this types of problem,i suggest you to check this help links:----Car heater blowing warm, but not hot ...