Question about 1991 Buick LeSabre
Sounds like you have a bad heater core or you have antifreeze leaking in the into the heater box. Maybe a loose clamp on the bypass hose or maybe you damaged the heater core tube when you installed or removed the bypass hose and now it is not sealing properly.
Posted on Jan 04, 2017
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Posted on Jan 02, 2017
sounds like the blend motor from hot to cold is stuck open half way allowing both temps to come into the car.
Posted on Aug 24, 2009
SOURCE: 91 lx accord overheating issue
make sure your over flow/add coolant bottle is clean...check that the hose from bottle to radiator isnt clogged...also fill add bottle fluid level between add and full mark
Posted on Nov 17, 2009
I just replaced my thermostat in my car due to the same problem. Except mine was a 92. I figured I'd start with the thermostat and antifreeze. Then the heating core. Now I have heat.
But yet I still have no heat on the windshield.
Posted on Dec 24, 2009
Since the battery is located inside the passenger compartment (under the rear seat), the vent hose is needed to vent the sulfuric acid fumes to the outside of the car - away from the passengers.
Posted on Feb 14, 2011
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