When car is standing still the car over heats but the heater blows out cold air

Tiny
GMEN2
  • MEMBER
  • 2002 FORD FOCUS
  • 2.2L
  • 4 CYL
  • FWD
  • MANUAL
  • 185,000 MILES
I have no heat in vehicle. It just blows cold and at idle when car is standing still the car over heats. I installed a new thermostat in put in new anti freeze.
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Saturday, October 15th, 2016 AT 6:32 PM

8 Replies

Tiny
WRENCHTECH
  • EXPERT
Are both heater hoses hot to the touch where they go into the firewall?

Is the fan working?

How did this start?
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Sunday, October 16th, 2016 AT 5:28 AM
Tiny
GMEN2
  • MEMBER
The fan works, I just found out that I have no heat, because it has gotten cold here in Michigan, the water hose going to the thermostat swells up and car is over heating. I got the car in summer never turned on heat until now.
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Sunday, October 16th, 2016 AT 7:54 AM
Tiny
WRENCHTECH
  • EXPERT
You only answered one of three questions.

Temperature of heater hoses?
How did the overheating begin? When?

If you have a radiator hose swelling, that hose needs to be replaced. That has no bearing on the issue.
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Sunday, October 16th, 2016 AT 7:58 AM
Tiny
GMEN2
  • MEMBER
Yes fan is working, but it seems to me it does not come on enough and does not stay on very long, like about four to five minutes, when the fan comes on the temperature goes down some, but soon as it goes off the temperature goes back up. It just started one day when I was in a traffic jam.
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Sunday, October 16th, 2016 AT 9:40 AM
Tiny
GMEN2
  • MEMBER
I am going to change the hose today.
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Sunday, October 16th, 2016 AT 9:45 AM
Tiny
WRENCHTECH
  • EXPERT
You do not have an overheating problem. It is acting exactly as it was designed to. The fact that the fan cycles on and off proves it has done its intended job. The cars are designed to run hotter at idle and slow traffic for emissions and fuel mileage reasons. Most of these cooling fans aren't programmed o come on until about 227 degrees.

You do not have anything to worry about there.
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Sunday, October 16th, 2016 AT 9:47 AM
Tiny
GMEN2
  • MEMBER
Both hoses going into the fire wall are not hot at all.
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Sunday, October 16th, 2016 AT 6:21 PM
Tiny
WRENCHTECH
  • EXPERT
If the upper radiator hose is hot but the heater hoses are not, then your heater core is likely plugged up. I hope you have never added any sealer to the system.
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Sunday, October 16th, 2016 AT 6:25 PM

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