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HDGENE
HDGENE, Ford Senior Master/Diesel/Trans
Category: Ford
Satisfied Customers: 5704
Experience:  25 years Auto experience, Ford ,GM, Chrysler, Asian & European
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2005 Ford Excursion diesel I have replaced the thermostat

Customer Question

2005 Ford Excursion diesel I have replaced the thermostat and the coolant recovery tank cap. the engine doesn't seem to get up to warm or even hot, I even put cardboard in front of the radiator. The other problem is the heater is not putting out any heat not even on a/c.
The auto a/c seems to be working ok all the modes work
Submitted: 1 year ago.
Category: Ford
Expert:  HDGENE replied 1 year ago.

Hello, does the temperature gauge never come off cold? Are both heater hoses to the heater core? Was it low on coolant/have a coolant leak? ANy codes for the cooling fan stator?

Customer: replied 1 year ago.
Cooling system flushed with new coolant
Customer: replied 1 year ago.
New thermostat and coolant recovery tank cap and it holds pressure.
Expert:  HDGENE replied 1 year ago.

Yes, but does the gauge work, is it actually running cold? Both radiator hoses cold? Heater hoses cold? Air pocket in the system? Did it have this issue before replacing the thermostat? Does the temperature gauge work at all?

Customer: replied 1 year ago.
Radiator hoses hot gauge normal but heater hoses hardly warm
Customer: replied 1 year ago.
Gauge works shows normal coolant tank holds good pressure system bleed
Expert:  HDGENE replied 1 year ago.

Ok, so the temp gauge is reading normal temperature, either you have an air pocket in the cooling system, giving poor heat or the heater core is plugged up. You can remove the heater hoses and run a garden hose through the core and see if you have flow through the heater core

Expert:  HDGENE replied 1 year ago.

If you run the engine at a higher higher do you get better heat?

Expert:  HDGENE replied 1 year ago.

If you adjust the temperature setting does it seem to change temp?

Customer: replied 1 year ago.
The higher rpm makes no difference in heat the truck has 120,000 mi. So think heater core could be possible issue?
Customer: replied 1 year ago.
It has auto temp control and it makes no difference if it's on a/c or heat
Customer: replied 1 year ago.
I have checked all of the operating controls of the a/c and heating system and everything seems to be working
Expert:  HDGENE replied 1 year ago.

Yes, remove the heater hoses and see if you get flow through the core,if it ha little flow it is plugge and needs replacement

Expert:  HDGENE replied 1 year ago.

Hello, do you need more help with this concern?

Customer: replied 1 year ago.
No unable to do test due to weather
Expert:  HDGENE replied 1 year ago.

No problem. Just following up. Let me know when you get a chance to check it over.