Question about 1991 Buick Regal

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Is there filter in front of the heater core that could restrict the air flow coming of the heater on a 1991 buick regal

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No there is not, they did not put cabin air filters in their cars until 1997.

Posted on Feb 01, 2010

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1999 buick regal when i turn on the heater it only blows out cool air


Blend door actuator stuck or vaccume came dissconected. Or could be low on coolant and not getting flow through the heater core

Nov 25, 2013 | 1999 Buick Regal

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I have a 1991 buick regal and when i turn the heat on only cool air blows out. it doesnt leak on floor either as if heater core was out. what should i do


Check that the heater core is not plugged by feeling the 2 heater hoses going into the firewall. If they both get hot, then the heater core is not at fault.

If they are cool, then the heater core is plugged then the heater core will have to be replaced.

Oct 29, 2010 | 1991 Buick Regal

1 Answer

How do i replace a heater core in a 1993 buick regal?


Hello. Remove air cleaner and duct assembly. Drain coolant. Remove both heater hoses at the heater core. Remove right and left instrument panel sound insulators. Remove rear compartment heat duct adapter bolt/screw and adapter. Remove heater outlet duct bolts and duct. Remove heater core cover. Remove heater core.

Jul 31, 2010 | 1993 Buick Regal

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1991 Buick regal will not start there is spark


Then it has to be fuel, compression, or air. Check for fuel pressure first, if it has fuel pressure check for compression, must have a minimum of 100 pounds to run. Last check for air supply being restricted(very very very rare). if it has all of these and sprk it has to run as long as its timed right which is impossible to get out of time on a fuel injected engine like this unless someone mixed the plug wires up on the coil pack at which point it will be back firing out the intake and exhaust.

Mar 01, 2010 | 1991 Buick Regal

1 Answer

Heater not getting hot replaced thermostat and blower works good


It's possible that your heater core has become plugged. This happens over time. You may need to have the replaced. You can check this by carefully touching both hoses going to the heater core. BE CAREFUL they are hot. If both of them are hot then fluid is flowing through the heater core. If one is only hot then it's probably plugged. If both are cold then it's REALLY plugged. If nothing can circulate through the heater core then neither hose will have hot coolant cycling through it. Some vehicles have a control valve in those hoses. It could be that it is faulty... if it has one.

Nov 09, 2009 | 1991 Buick Regal

1 Answer

Restricted air flow 98 grand am has new heater


yes the ac evaportater can get plugged with dirt and debris like leaf matter, also check to see if your car has a cabin air filter, if it does that can cause the problem, consult the dealer for more on this filter, not sure if your car uses one..

Sep 28, 2009 | 2000 Chevrolet Silverado

1 Answer

Heater


The heater in your car depends upon a flow of hot coolant going through the heater core in order to get hot air into the car. If the heater core is partially plugged, it will restrict the flow. If you have a head gasket that is putting exhaust into the cooling system, it will eventually get into the heater core. When this happens there is no coolant in the heater core to make the air warm. If the water pump vanes have corroded away the result will be very poor coolant circulation causing the heater to not blow hot air. If your car is equipped with a heater control valve that is not functioning properly, the coolant flow will be restricted. One or a combination of these factors is likely the culprit in your case.

To attempt to clean the core, you must flush the system multiple times. If this does not work, the core cannot be cleaned and must be replaced.

Jan 16, 2009 | 1988 Buick Riviera

1 Answer

My 91 cadillac devile has no heat , just cool air blows even when


The heater in your car depends upon a flow of hot coolant going through the heater core in order to get hot air into the car. If the heater core is partially plugged, it will restrict the flow. If you have a head gasket that is putting exhaust into the cooling system, it will eventually get into the heater core. When this happens there is no coolant in the heater core to make the air warm. If the water pump vanes have corroded away the result will be very poor coolant circulation causing the heater to not blow hot air. If your car is equipped with a heater control valve that is not functioning properly, the coolant flow will be restricted. One or a combination of these factors is likely the culprit in your case.

if the car is not overheating, the thermostat is working fine.... replace or flush the heater core multiple times to try and eliminate sediment build-up.

Jan 14, 2009 | 1991 Cadillac DeVille

2 Answers

No hot air FROM HEATER inside 2000 318IA


Hi There, If the fan blows only cold air, then you might have a restriction on the heater core. The heater core is like a small radiator inside your dash. The coolant flow through it can be restricted by corrosion. The lack of flow of coolant through the heater core will result in a lack of warm air inside the car. Flushing out the heater core may help. If not, you will have to replace it. I would say though, 80% of the time the cause is just restriction. Get the heater core flushed and I am sure you will get your heat back. MIke

Nov 05, 2008 | 2000 BMW 3 Series

1 Answer

1991 buick regal , 3.8lt,


1991 3.8 liter engines used a Mass Air Flow sensor in the intake tract (measures incoming air) instead of a MAP sensor. The MAF sensor is located on the engine just behind where intake hose is attached.

Jul 04, 2008 | 1991 Buick Regal

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