C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1984 Heater issue

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Old Feb 20, 2012 | 04:42 PM
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Jwick
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Default 1984 Heater issue

I've looked around but havent been able to find an answer.

I just got a 1984 vette, there are a few things needing to be fixed, but its sound. The heater worked great for the test drive and the ride home. I know, it was freezing outside and nice and toasty in the car.

Since then its hasnt blown hot air. I am at a loss. Rechecked the fluids, they are fine, no smell in the car when running. You can tell the vent opens and shuts but no hot air.

Anyone have any suggestions or should I start looking for a shop?
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Old Feb 20, 2012 | 07:03 PM
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Theres a heater control valve that opens & closes, its powered by vacuum. Make sure its working, might be a broken vacuum hose. Remove the air cleaner & check for bad hoses.
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Old Feb 20, 2012 | 10:22 PM
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your blend door isnt operating, the actuator may be moving but the door isnt.
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