Lincoln Repair Questions? Ask a Mechanic for Answers ASAP
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If you place your hand on both heater hoses out at the firewall with the engine running and warmed up are both heater hoses nice and hot?
Yes please do and let me know the results.
Okay then that is why the heater is not producing any heat, you either have trapped air in the cooling system due to low coolant level or the heater core is restricted. If you have good flow through the core, both hose would be to hot to hold.
Are both hose now getting nice and hot with the engine running and the heater on?
Okay if both hose are nice and hot then you now have good flow through the heater core. The next step we need to do is to run the self test on the control panels to see if the blend door actuator is working. See the steps to do this in the link below , run the test and let me know the results.