2002 Ford Focus Heat Goes Cold at Idle

2002 FORD FOCUS
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SMONAHAN
  • MEMBER
  • 1 POST
My 2002 Ford Focus/68,000 miles heats good, but yesterday while sitting at a traffic light, the heat turned cold. As the car started moving, the heat returned. This went on for most of the day. Any ideas as to what the problem might be?
Jan 16, 2007 at 1:07 AM
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JEREDM19
  • MEMBER
  • 9 POSTS
Try coolant flush and have your hoses checked because there may be a blockage.
May 10, 2012 at 6:07 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Make sure coolant level is full and all hoses are good. As mentioned, you may want to flush the system.
Jul 18, 2012 at 1:33 PM
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Suggested Repair

Confirm the coolant is full, inspect all hoses for problems, and flush the cooling system to clear a possible blockage.

Conversation Summary

A 2002 Ford Focus with 68,000 miles heats normally while moving but blows cold air when stopped at a traffic light, then heats again once moving. Replies recommend checking that the coolant level is full, inspecting the hoses, and flushing the cooling system because a blockage may be present.

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