Having problems with your 1994 Chevrolet Lumina APV ?
Heater will blow hot until I start driving.
My heater is currently blowing hot and strong until I start driving. I have replaced my water pump, thermostat, and have had the cooling system cleaned and checked for any possible problems with coolant flow.
It will start blowing hot again if I sit idol for 5-10 mins or rev engine for a few moments.
That mean your heater core is clogged, you will need replace for new one. There are no cure to fix the heater core.
Repair Help & Product Troubleshooting for 1994 Chevrolet Lumina APV
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