Question about Lincoln LS
When the engine is cold,check the coolant level.
Make sure it's on max.
A coolant system should be flush every two years.
If you did a coolant flush recently then air pocket can be the cause of the un-even heating problem.
The DIY method is to drive you car onto a ramp or a steep hill.
Iet the engine cool off and top off the coolant tank.
Set MAX heat + MAX fan
Let the engine ran for 20 minutes wih the cap off and the trap air will escape from the coolant reserve tank,
Check coolant level and top off coolant when the engine cools down.
A shop will charge $75+ for this but using an air operated excavate tool!
A car with over 90K miles may experience linkage problem to the heater control valve.
The heater control valve (near the firewall) may be stick over time.
Open the hood and move the heater to max and min. Back and forth.
Clean and lube the linkage with WD-40 to free the heater control valve.
If it's a vacuum type heater control valve then cash for leaky vac. hoses.
Move the fan switch back and forth to re-new the electrical conductors.
Pass a vacuum over the control panel to prevent dust build up behind the console.
Posted on Dec 03, 2009
Feel of the heater hoses going into the car from under the hood.They should be very hot to the touch,when the engine is at full warm up.If they are not,look on the same heater hoses,and you will find a heater control valve if it has one,if it does not have one,and the hoses ,or maybe just one of them are not very warm,then the heater core will need flushing out.Use a water hose,remove the heater hoses from the heater core,and flush the heater core by putting the water hose to one heater core pipe,and it will flush out the other pipe.Now if it has a heater control valve,it may need to be replaced if the hose from the engine to the valve is hot,but the one coming out of it is not,and it may have two hoses .Now if it is that the heater hoses are hot going to the inside of the car,to the heater core,then there will be a temp door actuator motor that is not working.This is a motor that selects the temp in the car,that you decide to select on the ac/heater control,if this motor goes out,the door will not move,at all.The whole dash has to come out to replace this actuator motor.
Posted on Nov 18, 2009
The DCCV is located behind the radiator and low on the passenger side (US) subframe. It isn't too bad of a job if you have the necessary tools. A set of hose pinch-off pliers are very helpful so you don't need to drain the entire cooling system. You'll also find it a lot easier to replace if you put the car on jackstands and can work from underneath as well as from above.
Posted on Nov 17, 2009
Yes you are correct. If you have both hoses in hand and one is cold that means the coolant is not circulating. If no valve is on the hoses between the firewall and the engine then the heater core may be blocked, If a valve is on the hose a vacuum hose should be attached. This could of fallen off.
Posted on Nov 18, 2009
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Posted on Jan 02, 2017
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