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How do I Troubleshoot a Defroster on a 79 Oldsmobile

You can troubleshoot the defroster in a 1979 Oldsmobile yourself without the headache of finding a mechanic and having to make a decision about repairs on the spot. There is a possibility you might need a voltmeter to troubleshoot your vehicle. This can be purchased at any auto parts store.

Instructions

1

Check the cars coolant level. The warm air from a car defroster comes from the engines coolant. A low engine coolant level could be causing a lack of heat from the defroster. Also check that the heater core is not plugged. The coolant flows through the heater core to warm the defroster.

2

Check to see if the vacuum hose is detached or damaged. If it is, this can keep the doors from working and cause a lack of control in air direction. Ducts are responsible for moving the heater core air into the passenger cabin of the car. Vacuum-powered doors are responsible for the direction of air flow inside the ducts in most vehicles. Check the cabin air filter, too. If the cabin air filter is full of debris, this can also lead to a reduced flow of air.

3

Use the car manual as a guide to find the fuse box and also to learn the proper positioning for the blower fuse. Check inside the fuse box to assess the blower fuse. Use the voltmeter to make sure the blower is grounded and can receive power if the fuse is undamaged.

Posted by Unknown at 5:30 AM

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